{"title":"TAC-41 Pistons \u0026 Cylinders","description":"\u003cp\u003ePistons, cylinders, cylinder heads, guide rings, piston sears, piston cups, air brakes and air-seal parts for Silverback TAC-41 rifles.\u003c\/p\u003e","products":[{"product_id":"skirmshop-scorpion-piston-kit-srs-tac-41","title":"Scorpion SRS\/TAC41 Piston Spare Parts Kit","description":"\u003cp\u003e\u003cstrong\u003ePiston Replacement Kit for Scorpion SRS and TAC-41\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e8x O-rings for the base components\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2x large O-rings for the spring guide - A2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1x nut for the air brake\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou can follow all my live streams, photos, and updates on my YouTube, Facebook, or Instagram channels here:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFacebook:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.facebook.com\/StalkerAirsoftDesigns\/\" target=\"_new\" rel=\"noopener\"\u003ehttps:\/\/www.facebook.com\/StalkerAirsoftDesigns\/\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstagram:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.instagram.com\/stalkerairsoftdesigns\/\" target=\"_new\" rel=\"noopener\"\u003ehttps:\/\/www.instagram.com\/stalkerairsoftdesigns\/\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eYouTube:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.youtube.com\/channel\/UCWsBiSHlu-lbcnGQWAkeJWQ\" target=\"_new\" rel=\"noopener\"\u003ehttps:\/\/www.youtube.com\/channel\/UCWsBiSHlu-lbcnGQWAkeJWQ\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor more information about Stalker products, technical guides, and installation manuals, visit: \u003ca href=\"http:\/\/www.stalkerairsoft.com\" target=\"_new\" rel=\"noopener\"\u003ewww.stalkerairsoft.com\u003c\/a\u003e\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52550726746453,"sku":"SP-STAL-ST-060-J","price":5.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image-4_5422fc46-023b-44f9-b1ad-e84c2b7b0cc8.webp?v=1771973325"},{"product_id":"silverback-tac-41-cylinder-head-cnc-aluminum","title":"TAC-41 Aluminum Cylinder Head","description":"\u003cp\u003eOriginal aluminum cylinder head for the TAC-41, for the original\/AEG hop-up unit (SBA-HOP-30 and SBA-HOP-35). 4.00 inner diameter nozzle, O-ring included, CNC aluminum construction.\u003c\/p\u003e\n\u003cp\u003eCompatible with:\u003c\/p\u003e\n\u003cp\u003e– Original TAC-41 piston (SBA-BPS-30)\u003c\/p\u003e\n\u003cp\u003e– Variable mass piston for TAC-41 (SBA-BPS-31)\u003c\/p\u003e\n\u003cp\u003e– SRS\/TAC-41 piston cup with air brake (SBA-BPS-15)\u003c\/p\u003e\n\u003cp\u003e– Advanced \"AEG\" piston head (SBA-BPH-01)\u003c\/p\u003e\n\u003cp\u003eSBA-CYL-36\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52550728581461,"sku":"SP-SBA-CYL-36","price":13.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/sba-cyl-35-1_86d18392-a9d6-4e40-a71b-97039cbbe621.jpg?v=1771973270"},{"product_id":"skirmshop-tac-41-power-upgrade-2-8j","title":"TAC41 2.8J Power Upgrade","description":"\u003cp\u003e\u003cstrong\u003eThis upgrade kit will make your Silverback TAC-41, TAC41-A, TAC41-P, TAC41-PS, TAC41L, TAC41LS more consistent, stable, quieter, and provide a smoother bolt pull. In addition, it will allow you to adjust the power to 2.81J. The package includes the following:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.skirmshop.es\/es\/piston-scorpion-tac41-guia-de-muelle.html\"\u003eScorpion Piston - TAC41 + Spring Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.skirmshop.es\/es\/rapax-28-j-spring-made-for-srstac41ssgvsr.html\"\u003e2.8J Spring - Made for - SRS \/ TAC41 \/ SSG \/ VSR\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.skirmshop.es\/es\/anillos-guia-para-cilindro-tac-41-rojo.html\"\u003eTAC-41 Cylinder Guide Rings - Red\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eProduct descriptions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eScorpion Piston for TAC41\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Stalker Scorpion piston features an extremely modular design that was created from scratch on my drawing board a long time ago. It includes all the options players could want for their TAC-41 piston. It is a unique concept where 6 weights form the body itself and, since the piston is made up of these weights, it is also possible to extend the piston with additional weights (short stroke), which in turn reduces your cylinder volume and joule output.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eRapax 2.8J Spring\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBuilt with durability and quality in mind, they are made to provide you with the best sniper experience.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eStalker Red Rings for TAC-41\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAchieve a smoother bolt pull.\u003c\/p\u003e\n\u003cp\u003eFor more information about Stalker products, technical guides, and manufacturing details, please visit: \u003ca href=\"http:\/\/www.stalkerairsoft.com\/\" target=\"_new\" rel=\"noreferrer\"\u003ewww.stalkerairsoft.com\u003c\/a\u003e\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52550747586901,"sku":"SP-STAL-TAC41 Power Upgrade  2.8J","price":124.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/1592ba30-9ad8-4ddc-894b-89e1d31beba5_77ef8201-d0d5-4be7-a21c-da0a26043785.webp?v=1771972922"},{"product_id":"stalker-tac-41-cylinder-head-anti-shock-aluminium","title":"TAC-41 Cylinder Head - GBB","description":"\u003cp\u003eKraken TAC-41 Cylinderhead with Anti Shock Rubbers.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e*Works best with Kraken Hopup Chamber\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003e*Works with Silverback GBB Hopup Chamber\u003cbr\u003e*Due to Nozzle Diameter Does not work with Silverback AEG Hopup Chamber\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpecial Designed TAC-41 Kraken Silent Cylinder Head with anti shock rubber pads on the back and front of the cylinder head.\u003c\/li\u003e\n\u003cli\u003eSuitable for GBB\/VSR style buckings and Stalker TAC41 Double Fin Buckings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe Kraken TAC-41 Cylinder Head Kit comes with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1x Kraken TAC-41 Silent Cylinder head (Nozzle inner diameter ~ 4.00mm (4.00mm air brakes for Scorpion piston sold separately)\u003c\/li\u003e\n\u003cli\u003eCylinder head anti-shock rubber pads for the front\u003c\/li\u003e\n\u003cli\u003eCylinder head damper rubber for the piston\u003c\/li\u003e\n\u003cli\u003e1x O-Ring for the cylinder head (thicker and thinner, depending on the cylinder. Check Airseal and use one that works the best).\u003c\/li\u003e\n\u003cli\u003eWorks with all TAC-41 pistons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat makes this Cylinderhead different and how does it work?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe cylinder head comes with 2 anti-shock rubber front pads, which reduces the sound of contact between the cylinder and hop up unit. Making your TAC41 just a bit quieter and it comes with a damper rubber pad inside the cylinder head to dampen the piston slap.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Instructions\/Requirements\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eDisassemble your cylinder and replace the cylinder head with the included Stalker cylinder head.\u003cbr\u003eIncluded in the package are 2 O-rings to fit around this head, make sure your cylinder is sealing properly, else install the thicker O-ring.\u003c\/li\u003e\n\u003cli\u003eAttach the included rubber anti-shock pads on the front of the Stalker cylinder head by removing the 3M tape and fit them into the cutouts.\u003c\/li\u003e\n\u003cli\u003eGlue the rubber anti-shock pad on the back of the cylinder head with a few drops of instant glue or Strong Gorilla glue.\u003c\/li\u003e\n\u003cli\u003eRemove the bolt\/screw that is attached to your original bolt knob, this may be necessary if your bolt is not closing properly.\u003c\/li\u003e\n\u003cli\u003eDrop your cylinder internals in the cylinder and install the cylinder head on your cylinder.\u003c\/li\u003e\n\u003cli\u003eAssemble your TAC-41 back together as described in the Silverback manual.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52550762725717,"sku":"SP-STAL-ST-TAC41-007","price":19.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image-1_1b3b2f65-3c51-4831-86bc-6ba3089b271c.png?v=1771972824"},{"product_id":"silverback-tac-41-match-trigger-unit-aluminium","title":"TAC41 Upgraded Conical Trigger Springs","description":"\u003cp\u003eTAC-41 Match Trigger,\u003c\/p\u003e\n\u003cp\u003e6000 series aluminum, CNC machined, black and red hard anodized, mounted on two 10×4 bearings.\u003c\/p\u003e\n\u003cp\u003eSteel trigger axis.\u003c\/p\u003e\n\u003cp\u003eThis allows adjustment of the following:\u003c\/p\u003e\n\u003cp\u003e– trigger height\u003cbr\u003e– trigger angle\u003c\/p\u003e\n\u003cp\u003eWeight: 20 grams\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52550840615253,"sku":"SP-ST-TAC41-006","price":8.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image_c3ecef7e-3b53-463f-ac76-a908d7fd0ec6.jpg?v=1771971914"},{"product_id":"stalker-cylinder-head-tool-tac-41-vsr10","title":"Cylinder Head Tool for TAC-41\/VSR10","description":"\u003cp\u003eEasy-to-use, compact tool for removing the cylinder head of SSG-10, VSR-10, TAC-41, T10 and others! Made of nylon and strong as a rock!\u003cbr\u003eCylinder head not included\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52550860472661,"sku":"SP-STAL-238","price":8.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image_cd329cdc-8adf-40ff-90b8-606329da17c0.jpg?v=1771971485"},{"product_id":"stalker-tac-41-bucking-red","title":"TAC-41 Cylinder Guide Rings - Red","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan\u003eRedesigned POM guide rings for TAC-41\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan\u003eThe package contains 2 identical red guide rings.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan\u003eMade of durable red POM Delrin.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan\u003eThicker guide rings for improved cylinder guidance.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan\u003eEliminates possible loading noise caused by the cylinder head hitting the inner wall of the cylinder.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan\u003eTriangular, twisted, and striated outer surface.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan\u003ePrevents the nozzle from damaging the hop-up nub.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan\u003eEliminates as much cylinder oscillation as possible inside the receiver.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan\u003eSmooth bolt cycling with minimal wobble.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan\u003eDoes not fit Sport versions with a polymer receiver.\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan\u003eInstallation Instructions\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003e\u003cspan\u003eDue to machining tolerances, all cylinders may have slightly different diameters. The guide ring that fits on the front may require light sanding to perfectly match your cylinder diameter.\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52550898024789,"sku":"SP-STAL-236","price":17.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image-54_64c2b90c-9ff0-4732-97ab-d3db2e3f52dc.png?v=1771971227"},{"product_id":"stalker-scorpion-piston-srs-tac41","title":"Scorpion Piston Head SRS\/TAC41 - Extreme Stealth","description":"\u003cp\u003eThis SRS\/TAC41 piston head provides slightly lower joule output, but it is the best solution to make your SRS\/TAC41 extremely quiet. This head works in SRS cylinders or TAC41 cylinders. Use lubricant for perfect results; we recommend motor oil, silicone grease, or similar.\u003c\/p\u003e\n\u003cp\u003eAs a reference, a Rapax Lightpull Blue 2J+ spring delivers 2.2–2.3 joules in an SRS with a Stalker SRS cylinder and a 420 mm inner barrel. The original cylinder will produce fewer joules. Results may vary depending on the cylinder used.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptimal thumb seal\u003c\/li\u003e\n\u003cli\u003eStandard joule output but extremely quiet.\u003c\/li\u003e\n\u003cli\u003eWe recommend purchasing some spring guide spacers to optimize the joule output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou can follow all my live streams, photos, and information on my YouTube, Facebook, or Instagram channels here:\u003c\/p\u003e\n\u003cp\u003eFacebook: \u003ca href=\"https:\/\/www.facebook.com\/StalkerAirsoftDesigns\/\" target=\"_blank\" rel=\"noreferrer noopener\"\u003ehttps:\/\/www.facebook.com\/StalkerAirsoftDesigns\/\u003c\/a\u003e\u003cbr\u003eInstagram: \u003ca href=\"https:\/\/www.instagram.com\/stalkerairsoftdesigns\/\" target=\"_blank\" rel=\"noreferrer noopener\"\u003ehttps:\/\/www.instagram.com\/stalkerairsoftdesigns\/\u003c\/a\u003e\u003cbr\u003eYoutube: \u003ca href=\"https:\/\/www.youtube.com\/channel\/UCWsBiSHlu-lbcnGQWAkeJWQ\" target=\"_blank\" rel=\"noopener\"\u003ehttps:\/\/www.youtube.com\/channel\/UCWsBiSHlu-lbcnGQWAkeJWQ\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eFor more information about Stalker products and technology and manufacturing guides, visit: \u003cb\u003e\u003ca href=\"http:\/\/www.stalkerairsoft.com\/\" target=\"_blank\" rel=\"noopener\"\u003ewww.stalkerairsoft.com\u003c\/a\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52550973817173,"sku":"SP-STAL-55.1","price":11.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image_cb257636-abf1-446d-a013-ea36aea6d680.jpg?v=1771970630"},{"product_id":"stalker-tac41-piston-scorpion-upgrade","title":"Scorpion Piston - TAC41 + Spring Guide","description":"\u003cp\u003e\u003cstrong\u003eThe new Stalker Scorpion piston for the TAC41!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModular piston with adjustable weight (from ~65 to 148 grams)\u003c\/li\u003e\n\u003cli\u003eSilences your TAC41\u003c\/li\u003e\n\u003cli\u003eIncreases joule\/FPS consistency\u003c\/li\u003e\n\u003cli\u003eAdjustable airbrakes for optimal fine-tuning\u003c\/li\u003e\n\u003cli\u003eOptional short-stroke setup for your TAC41 for faster reloads and a shorter bolt pull\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe piston includes 2 adjustable airbrakes for optimal fine-tuning based on your setup.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 short 3.80 mm airbrake (optimal for 2J and 3J~ or higher upgrades).\u003c\/li\u003e\n\u003cli\u003e1 long 3.80 mm airbrake (optimal for 2J~ or lower upgrades).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe included airbrakes are designed to work with the standard TAC41 cylinder head. If you are using the GBB hop unit or the TAC41 Kraken, you must purchase the thicker airbrakes.\u003c\/p\u003e\n\u003cp\u003eA High Joule cup (shiny) is included for higher joule output and a lighter bolt pull.\u003cbr\u003eUse lubricant for perfect results; we recommend motor oil, silicone grease, or similar. As a reference, a Rapax Lightpull Blue 2J+ spring achieves approximately 2.2–2.3~ joules in a TAC41 with a Stalker TAC41 cylinder and a 420 mm inner barrel. The original cylinder will produce lower joules. Results may vary depending on the cylinder used.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGolden installation rules\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eAlways apply a drop of oil or silicone grease to the edge of the head to achieve optimal joules.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor 2.3J setups, we recommend starting with the short airbrake fully unscrewed.\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eFor 2.8J+ setups, we recommend starting with the short airbrake fully screwed in.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAlways set your hop-up correctly for your desired BB weight and adjust it to shoot straight.\u003c\/li\u003e\n\u003cli\u003eMore joules = shorter airbrake\u003c\/li\u003e\n\u003cli\u003eLess joules = longer airbrake\u003c\/li\u003e\n\u003cli\u003eChoose your airbrake and start low, then increase (unscrew) gradually until the setup is quiet.\u003c\/li\u003e\n\u003cli\u003eWhen you begin to lose joules, you know you are just past the perfect airbrake position. Screw it back in slightly to regain joules and achieve the quietest setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProper setups require adjustable airbrakes because too many parts in your rifle can change the piston acceleration speed. Piston weight, spring power, bucking hardness, barrel length, etc. We also recommend purchasing some spring guide spacers to fine-tune piston weight and spring joules.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded in this kit:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1x Stalker stainless steel spring guide (with engraved Stalker logo)\u003c\/li\u003e\n\u003cli\u003e1x High Joule piston head (shiny)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e1x Aluminum piston head\u003c\/li\u003e\n\u003cli\u003e1x Stainless steel piston head\u003c\/li\u003e\n\u003cli\u003e5x Aluminum weights\u003c\/li\u003e\n\u003cli\u003e4x Stainless steel weights\u003c\/li\u003e\n\u003cli\u003eSear and end cap made of stainless steel (rainbow finish)\u003c\/li\u003e\n\u003cli\u003e2 adjustable airbrakes (long and short)\u003c\/li\u003e\n\u003cli\u003e1x nut to lock the airbrake setting\u003c\/li\u003e\n\u003cli\u003e10 O-rings to place between weights or the head to prevent weights from loosening\u003c\/li\u003e\n\u003cli\u003eFront and rear POM guide rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDetailed information:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Scorpion piston is a unique concept where 6 weights form the actual body. Since the piston itself is made up of these weights, it is also possible to extend the piston with additional weights (short-stroke), which reduces your cylinder volume and joule output, but shortens the bolt pull of your TAC41 with each added weight—at the cost of joule output, which can be compensated with a stronger spring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe piston comes with 9 body weights that are interchangeable to perfectly configure your TAC41.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 black anodized aluminum body weights\u003c\/strong\u003e, each piece weighs: 3 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 polished stainless steel body weights\u003c\/strong\u003e, each piece weighs: 11 grams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn addition, the piston also includes 2 head weight versions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized aluminum head weighing: 7 grams\u003c\/li\u003e\n\u003cli\u003e1x Polished stainless steel head weighing: 17 grams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eList of \u003cstrong\u003e6-piece configurations\u003c\/strong\u003e:\u003cbr\u003e\u003cem\u003e(The fifth stainless steel mid-section weight is sold separately if you wish to use full heavy steel configurations)\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTAC41 Scorpion 62g (1 aluminum head, 5 aluminum mid-sections)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 76g (1 aluminum head, 1 steel mid-section, 4 aluminum mid-sections)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 80g (1 steel head, 5 aluminum mid-sections)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 89g (1 aluminum head, 2 steel mid-sections, 3 aluminum mid-sections)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 93g (1 steel head, 1 steel mid-section, 4 aluminum mid-sections)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 102g (1 aluminum head, 3 steel mid-sections, 2 aluminum mid-sections)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 107g (1 steel head, 2 steel mid-sections, 3 aluminum mid-sections)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 115g (1 aluminum head, 4 steel mid-sections, 1 aluminum mid-section)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 119g (1 steel head, 3 steel mid-sections, 2 aluminum mid-sections)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 128g (1 aluminum head, 5 steel mid-sections)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 133g (1 steel head, 4 steel mid-sections, 1 aluminum mid-section)\u003c\/li\u003e\n\u003cli\u003eTAC41 Scorpion 145g (1 steel head, 5 steel mid-sections)\u003cbr\u003e\u003cem\u003eThis configuration requires a fifth stainless steel mid-section, sold separately.\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBoth airbrakes are secured with a nut under the cup against the piston head to keep them in place after adjustment. The adjustable airbrake is designed to control piston speed at the end of its stroke, reduce cylinder air release time, and minimize piston impact noise when it hits the head. A Sorbo pad on the head can still be used with this piston.\u003c\/p\u003e\n\u003cp\u003eBasically, whether you prefer a plug-and-play piston or you are an expert fine-tuning piston weights and airbrakes for maximum performance, the Stalker Scorpion is your best friend.\u003c\/p\u003e\n\u003cp\u003eIf you have any issues or questions about this or other Stalker products, visit our Stalker owners group on Facebook here:\u003c\/p\u003e\n\u003cp\u003ehttps:\/\/www.facebook.com\/groups\/329589544772075\/\u003c\/p\u003e\n\u003cp\u003eYou can follow all my live streams, photos, and updates on my Instagram, Facebook, or YouTube channels here:\u003c\/p\u003e\n\u003cp\u003eFacebook: https:\/\/www.facebook.com\/StalkerAirsoftDesigns\/\u003cbr\u003eInstagram: https:\/\/www.instagram.com\/stalkerairsoftdesigns\/\u003cbr\u003eYoutube: https:\/\/www.youtube.com\/channel\/UCWsBiSHlu-lbcnGQWAkeJWQ\u003c\/p\u003e\n\u003cp\u003eFor more information about Stalker products, tech guides, and builds, visit: www.stalkerairsoft.com\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52551007797589,"sku":"SP-STAL-43-1.1","price":99.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image_a4511ffb-0d14-4ee5-9c9e-aad1fe75a019.jpg?v=1771970459"},{"product_id":"stalker-tac-41-hop-up-chamber","title":"Kraken TAC-41 TDC Hop-Up Chamber + Cylinder Head","description":"\u003cp\u003e\u003cstrong\u003eKraken TAC-41 TDC Hop-Up Chamber + Cylinder Head - V2\u003c\/strong\u003e\u003cbr\u003e*This V2 version features an improved wheel section where it is now possible to use the original Silverback metal ball click system.\u003cbr\u003e\u003cbr\u003eUpgrade your TAC-41 with the Kraken TAC-41 TDC Hop-Up chamber! A true TDC hop-up chamber that uses GBB\/VSR-style hop-up buckings, the preferred type of bucking for airsoft snipers.\u003cbr\u003e\u003cbr\u003e\u003ciframe src=\"\/\/www.youtube.com\/embed\/CSea4hPx9Eo\" width=\"560\" height=\"314\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003ciframe src=\"\/\/www.youtube.com\/embed\/b6K3wM7r8yk?si=9Tc-6QlmcjqNe15m\" width=\"560\" height=\"314\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e\u003cbr\u003eWhen using the stock Silverback (SBA), GBB, or STALKER KRAKEN hop-up, we strongly recommend also using the \u003cstrong\u003eSTALKER Red Guide Rings\u003c\/strong\u003e to ensure the bolt enters the hop-up and hop-up bucking straight. This helps extend the lifespan of the BB stopper, hop-up unit, and hop-up bucking.\u003cbr\u003e\u003ca href=\"https:\/\/www.skirmshop.nl\/en\/red-guide-rings-for-tac-41.html\"\u003eLink to the Guide Rings\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTDC V2 Hop-Up Unit\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePerfectly aligned, impossible to install incorrectly.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKraken TAC-41 Silent Cylinder Head\u003c\/strong\u003e with front and rear anti-impact rubber pads (mandatory for use with the Kraken TAC-41 hop-up).\u003c\/li\u003e\n\u003cli\u003eCompatible with \u003cstrong\u003eGBB\/VSR-style hop-up buckings\u003c\/strong\u003e (includes \u003cstrong\u003eStalker TAC41 Double Fin SR-hop 60° bucking\u003c\/strong\u003e).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeather-resistant\u003c\/strong\u003e nub compartment thanks to its unique design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClicker Wheel\u003c\/strong\u003e compatible with the \u003cstrong\u003eClicker Ball Plunger\u003c\/strong\u003e system from stock Silverback hop-ups (produces clicks when adjusting).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnly compatible with GBB inner barrels\u003c\/strong\u003e; the \u003cstrong\u003eMorpheus Hybrid Barrel\u003c\/strong\u003e is recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Kraken TAC-41 Set Includes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Main hop-up body\u003c\/li\u003e\n\u003cli\u003e1x TDC wheel\u003c\/li\u003e\n\u003cli\u003e1x Flat TDC nub (concave shape over the bucking)\u003c\/li\u003e\n\u003cli\u003e1x Square spacer\u003c\/li\u003e\n\u003cli\u003e2x Different O-rings for the hop-up wheel\u003c\/li\u003e\n\u003cli\u003e1x Stalker Double Fin SR-hop 60° bucking\u003c\/li\u003e\n\u003cli\u003e1x Kraken TAC-41 Silent cylinder head (inner nozzle diameter ~ 4.00 mm; the \u003cstrong\u003e4.00 mm air brake for the Scorpion piston is sold separately\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli\u003eFront and rear anti-impact rubber pads for the cylinder head\u003c\/li\u003e\n\u003cli\u003e1x O-ring for the cylinder head\u003c\/li\u003e\n\u003cli\u003e2x Flat locking screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eWhat makes this hop-up different and how does it work?\u003c\/h3\u003e\n\u003cp\u003eThe design of the \u003cstrong\u003eKraken hop-up and Kraken TAC-41 cylinder head\u003c\/strong\u003e is optimized to position the BB perfectly inside the hop-up bucking, providing a \u003cstrong\u003emore consistent hop effect\u003c\/strong\u003e and improving \u003cstrong\u003erange and accuracy\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAdditionally, the cylinder head includes \u003cstrong\u003etwo rubber pads\u003c\/strong\u003e that \u003cstrong\u003ereduce the sound of contact between the cylinder and the hop-up unit\u003c\/strong\u003e, making the TAC-41 slightly quieter.\u003c\/p\u003e\n\u003cp\u003eThe hop-up unit design \u003cstrong\u003eeliminates any possibility of misalignment\u003c\/strong\u003e between the hop-up and the bucking\/outer barrel. It features \u003cstrong\u003etwo cutouts\u003c\/strong\u003e that perfectly match the \u003cstrong\u003eStalker TAC41 Double Fin SR-hop\u003c\/strong\u003e buckings.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003esquare barrel spacer and the two locking screws\u003c\/strong\u003e prevent any unwanted movement. In addition, the main hop-up body has a \u003cstrong\u003eraised edge under the wheel\u003c\/strong\u003e to prevent water from entering the nub compartment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Instructions\/Requirements:\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eA GBB inner barrel is required\u003c\/strong\u003e to install the Stalker Kraken TAC-41 TDC hop-up, and it may be any length you require.\u003c\/p\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e Do not force the bolt forward. If it cannot be inserted into the housing, it may be due to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot sanding the bolt kit screw sufficiently (see installation video).\u003c\/li\u003e\n\u003cli\u003eThe cylinder head not being fully tightened into the cylinder.\u003c\/li\u003e\n\u003cli\u003eThe front cylinder head rubbers not being installed correctly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Steps:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eDisassemble your TAC-41 following the Silverback manual.\u003c\/li\u003e\n\u003cli\u003eUnpack the Stalker TAC-41 TDC hop-up unit.\u003c\/li\u003e\n\u003cli\u003eInstall the \u003cstrong\u003eSilverback metal ball clicker pin\u003c\/strong\u003e if you want the wheel to produce \"clicks\" when turning, or use the included O-ring if you prefer click-free adjustment.\u003c\/li\u003e\n\u003cli\u003eInstall the \u003cstrong\u003eStalker TAC41 Double Fin SR-hop bucking\u003c\/strong\u003e onto your GBB inner barrel.\u003c\/li\u003e\n\u003cli\u003eSlide the \u003cstrong\u003emain hop-up body\u003c\/strong\u003e over the bucking.\u003c\/li\u003e\n\u003cli\u003eSlide the \u003cstrong\u003esquare spacer\u003c\/strong\u003e onto the inner barrel, with the arrow pointing toward the muzzle.\u003c\/li\u003e\n\u003cli\u003eInstall the screws through the hop-up body and barrel spacer to secure everything in place (choose the correct screws and \u003cstrong\u003edo not overtighten\u003c\/strong\u003e, as you may damage the brass barrel).\u003c\/li\u003e\n\u003cli\u003eInsert the \u003cstrong\u003ebarrel + hop-up assembly\u003c\/strong\u003e into the outer barrel, ensuring the spacers are properly positioned.\u003c\/li\u003e\n\u003cli\u003ePlace the \u003cstrong\u003eflat TDC nub\u003c\/strong\u003e, ensuring the concave side sits on the hop-up bucking.\u003c\/li\u003e\n\u003cli\u003eCarefully install the hop-up wheel by pressing the click ball inward and turning clockwise until the thread engages properly. \u003cstrong\u003e⚠️ Do not force the wheel.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisassemble the cylinder and replace the cylinder head with the included \u003cstrong\u003eStalker cylinder head\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eInstall one of the \u003cstrong\u003etwo O-rings\u003c\/strong\u003e around the cylinder head to ensure a proper seal (use the thicker one if the other does not seal properly).\u003c\/li\u003e\n\u003cli\u003eAttach the \u003cstrong\u003efront anti-impact rubber pads\u003c\/strong\u003e to the cylinder head (remove the 3M tape and place them in the grooves).\u003c\/li\u003e\n\u003cli\u003eGlue the rear rubber pad in place using a few drops of super glue.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIf the bolt does not close properly\u003c\/strong\u003e, remove the screw from the original bolt handle.\u003c\/li\u003e\n\u003cli\u003eInstall the cylinder with all its components.\u003c\/li\u003e\n\u003cli\u003eReassemble your TAC-41 following the Silverback manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHop-up adjustment:\u003c\/strong\u003e Turn the wheel \u003cstrong\u003eclockwise to increase hop effect\u003c\/strong\u003e or \u003cstrong\u003ecounterclockwise to decrease it\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e✅ \u003cstrong\u003eReady to play!\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eAbout Stalker\u003c\/h3\u003e\n\u003cp\u003eAfter the success of the \u003cstrong\u003eSRS Kraken hop-up\u003c\/strong\u003e, \u003cstrong\u003eStalker\u003c\/strong\u003e decided to also develop a hop-up chamber for the \u003cstrong\u003eSilverback TAC-41\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis design is another creation by \u003cstrong\u003eStalker\u003c\/strong\u003e, who, as a \u003cstrong\u003ecertified gunsmith\u003c\/strong\u003e, airsoft player, and fan of the Silverback line, develops products that are \u003cstrong\u003eeasy to install, easy to adjust, and highly effective on the field\u003c\/strong\u003e.\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52551016153429,"sku":"SP-STAL-234.1","price":99.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/skirmshop-22-11-2024-0071_738300ac-2091-4e0a-89ce-97fc04048aeb.jpg?v=1771970419"},{"product_id":"stalker-4-40mm-airbrake-nozzle-tac-41","title":"4.40mm Scorpion Airbrake Set","description":"\u003cp\u003e4.40mm Scorpion airbrake set made of stainless steel.\u003c\/p\u003e\n\u003cp\u003eThis product is required for wider nozzles, such as GBB models.\u003c\/p\u003e\n\u003cp\u003eThis airbrake has a diameter of 4.40 mm and comes in 2 lengths. Both airbrakes are adjustable by inserting them deeper into the piston. The airbrake features 2 grooves for installing small O-rings if you would like to experiment with them. They are not required and are not included in this package.\u003c\/p\u003e\n\u003cp\u003eThis package includes:\u003c\/p\u003e\n\u003cp\u003e1 short 4.40 mm airbrake (optimal for 3J~ models or higher).\u003cbr\u003e1 long 4.40 mm airbrake (optimal for 2J~ builds or lower).\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52551016218965,"sku":"SP-STAL-229-2","price":9.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image_f11523f4-2330-4c7c-ab01-cd5d060c8792.jpg?v=1771970416"},{"product_id":"stalker-piston-head-adapter-scorpion-srs-tac41","title":"SRS\/TAC41 Piston Head Adapter for Scorpion Piston","description":"\u003cp\u003eAdapter for Scorpion SRS\/TAC41 piston head with O-ring\u003c\/p\u003e\n\u003cp\u003eThis Scorpion SRS\/TAC-41 weight piece connector allows the use of Silverback O-ring piston heads and compatible models in the Scorpion piston body.\u003c\/p\u003e\n\u003cp\u003eUse the shorter threaded side on the Silverback O-ring piston head\u003cbr\u003eUse the longer threaded side on the Scorpion piston\u003cbr\u003eOptional: use the upper guide ring of your Scorpion piston to extend or shorten your piston.\u003c\/p\u003e\n\u003cp\u003eAluminum - Black\u003cbr\u003e8 grams\u003cbr\u003e3 O-rings included.\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52551023231317,"sku":"SP-STAL-62-1","price":13.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image_046b1e2e-760b-4c92-ac66-c0d803e8a6ca.jpg?v=1771970296"},{"product_id":"stalker-scorpion-piston-tac-41-sale-edition","title":"Scorpion Piston - TAC-41 (Sale Edition)","description":"\u003cp\u003eThe Stalker Scorpion TAC-41 piston! (SALE EDITION)\u003c\/p\u003e\n\u003cp\u003eThis piston is now on sale due to great success! We are pleased to offer you a perfect piston setup for 2.3J and 3J builds. The price of this piston is €69.95 and it is available while stocks last!\u003c\/p\u003e\n\u003cp\u003eSTALKER:\u003cbr\u003eAfter designing the Stalker Scorpion SRS and Scorpion VSR editions, it was time for the TAC-41 edition.\u003c\/p\u003e\n\u003cp\u003eThe Stalker Scorpion piston features an extremely modular design that was created from scratch on my drawing board a long time ago. It includes every option players could want for their piston. It is a unique concept in which 6 weights form the actual body, and since the piston itself is made up of these weights, it is also possible to extend the piston with additional weights (short stroke\/short pull), which in turn reduces your cylinder volume and joule output, but benefits from a shorter pull and reduced piston travel.\u003c\/p\u003e\n\u003cp\u003eSale Edition Parts List:\u003cbr\u003e1 aluminum piston head.\u003cbr\u003e3 aluminum middle weights.\u003cbr\u003e1 steel piston head.\u003cbr\u003e3 gold-coated steel weights.\u003cbr\u003e1 piston cup.\u003cbr\u003e1 brass airbrake (VSR\/SSG10 piston design)\u003cbr\u003e1x Airbrake Nut\u003cbr\u003e1x STALKER engraved spring guide\u003cbr\u003e1 front guide ring.\u003cbr\u003e1 rear guide ring.\u003cbr\u003e1x Sear End (rainbow color treatment)\u003cbr\u003e1 O-ring kit.\u003c\/p\u003e\n\u003cp\u003eHere is a list of the 6-piece configurations:\u003c\/p\u003e\n\u003cp\u003eTAC41 Scorpion 61g (1 aluminum head, 5 aluminum middle sections)\u003cbr\u003eTAC41 Scorpion 74g (1 aluminum head, 1 steel middle section, 4 aluminum middle sections)\u003cbr\u003eTAC41 Scorpion 78g (1 steel head, 5 aluminum middle sections)\u003cbr\u003eTAC41 Scorpion 87g (1 aluminum head, 2 steel middle sections, 3 aluminum middle sections)\u003cbr\u003eTAC41 Scorpion 91g (1 steel head, 1 steel middle section, 4 aluminum middle sections)\u003cbr\u003eTAC41 Scorpion 99g (1 aluminum head, 3 steel middle sections, 2 aluminum middle sections)\u003cbr\u003eTAC41 Scorpion 105g (1 steel head, 2 steel middle sections, 3 aluminum middle sections)\u003cbr\u003eTAC41 Scorpion 116g (1 steel head, 3 steel middle sections, 2 aluminum middle sections)\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eBelow I will explain the features of this piston.\u003c\/p\u003e\n\u003cp\u003eThe cup is made of high-quality durable rubber and has been tested and adapted to deliver the best performance with the currently available Silverback cylinder.\u003c\/p\u003e\n\u003cp\u003eBlack cup\u003c\/p\u003e\n\u003cp\u003eLubricate the piston cup with oil such as motor oil, sewing machine oil, or grease such as TechT before use.\u003c\/p\u003e\n\u003cp\u003eZero loading friction.\u003cbr\u003eThumb block air seal\u003cbr\u003eImproved joule output.\u003cbr\u003eFast reload (lighter pull).\u003cbr\u003eAlso fits the SRS Scorpion.\u003cbr\u003eThe piston comes with multiple body weights (depending on the product edition), which are interchangeable to perfectly configure your SRS.\u003c\/p\u003e\n\u003cp\u003eAvailable in black anodized aluminum, each piece weighs: 7 grams\u003cbr\u003eAvailable in gold-coated polished steel, each piece weighs: 21 grams\u003cbr\u003eAdditionally, the piston head is also available in these versions.\u003c\/p\u003e\n\u003cp\u003eBlack anodized aluminum, each head weighs: 8 grams\u003cbr\u003eGold-coated polished steel, each head weighs: 24 grams\u003cbr\u003eThis allows you to configure the piston between ~61 and 144 grams. This way, you can tune it for any joule output (you will need an additional gold weight to reach 150 grams). This kit comes set at 130 grams.\u003c\/p\u003e\n\u003cp\u003eIn addition, the piston comes with an adjustable airbrake.\u003c\/p\u003e\n\u003cp\u003e1x Adjustable Airbrake made of Brass.\u003c\/p\u003e\n\u003cp\u003eThis is a thick, non-conical brass airbrake. This airbrake is the most \"direct\" working airbrake; once the airbrake enters the nozzle, the piston immediately begins to slow down.\u003c\/p\u003e\n\u003cp\u003eThe airbrake is secured with a nut beneath the cup against the piston head to keep it in place after you have adjusted it to your preference.\u003c\/p\u003e\n\u003cp\u003eThe adjustable airbrake is designed to fine-tune the piston speed at the end of its travel to reduce cylinder air release time and minimize the noise from the piston impact against the cylinder head.\u003c\/p\u003e\n\u003cp\u003eThe Scorpion piston inlet size has been optimized to work best with APS2-style springs, such as Rapax and Silverback springs; it may also work well with springs from other brands as long as they have the same diameter as the aforementioned springs (APS2 style).\u003c\/p\u003e\n\u003cp\u003eBasically, whether you prefer a plug-and-play piston or you are an expert who enjoys fine-tuning piston weights, the airbrake, and cups for maximum performance, then the Stalker Scorpion is your best friend.\u003c\/p\u003e\n\u003cp\u003eIf you have any issues or questions about this or other Stalker products, please visit our Stalker Owners Group on Facebook here: https:\/\/www.facebook.com\/groups\/329589544772075\/\u003c\/p\u003e\n\u003cp\u003eYou can follow all my live streams, photos, and updates on my Instagram, Facebook, or YouTube channels here:\u003c\/p\u003e\n\u003cp\u003eFacebook: https:\/\/www.facebook.com\/StalkerAirsoftDesigns\/\u003cbr\u003eInstagram: https:\/\/www.instagram.com\/stalkerairsoftdesigns\/\u003cbr\u003eYoutube: https:\/\/www.youtube.com\/channel\/UCWsBiSHlu-lbcnGQWAkeJWQ\u003c\/p\u003e\n\u003cp\u003eFor more information about Stalker products, tech guides, and build guides, visit: www.stalkerairsoft.com\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52551212007765,"sku":"SP-STAL-223","price":101.99,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image_80095582-c9bf-4b9f-9c65-bf5a8b14f067.jpg?v=1771968891"},{"product_id":"silverback-tac-41-cylinder-head-gbb","title":"TAC 41 Cylinder Head (GBB Bolt)","description":"\u003cp\u003eTAC-41 “GBB” Cylinder Head. Optional cylinder head for the TAC-41, “GBB” version, for optional \/ GBB hop-up unit (SBA-HOP-31). 4.60 inner diameter nozzle, O-ring included, CNC stainless steel construction. Compatible with (must be used with a “GBB” hop-up unit - SBA-HOP-31): - original TAC-41 piston (SBA-BPS-30) - variable mass piston for TAC-41 (SBA-BPS-31) - “GBB” Advanced Piston Head (SBA-BPH-02)\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552277164373,"sku":"SP-SBA-CYL-33","price":14.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/cyl-332-1_aa188250-da06-4e7f-867e-3bd25dfb7bc2.jpg?v=1771967237"},{"product_id":"silverback-tac-41-variable-mass-piston-metal","title":"Variable Mass Piston, Metal Base","description":"\u003cp\u003eCNC steel version of the variable mass piston body, for extreme mass configuration (55.1 grams instead of 19.0 grams for the aluminum version). Compatible with: - original SRS piston (SBA-BPS-13) - original TAC-41 piston (SBA-BPS-30) - variable mass piston for SRS (SBA-BPS-18) - variable mass piston for TAC-41 (SBA-BPS-31) - original SRS piston end (SBA-BPE-01) - original TAC-41 piston end (SBA-BPE-03)\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552277885269,"sku":"SP-SBA-BPS-33","price":27.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/bps-342_9ee404ad-0cb8-47b0-b5e0-82037fe1b94b.jpg?v=1771967234"},{"product_id":"silverback-tac-41-advanced-piston-head-gbb","title":"TAC-41 Advanced Piston Head (GBB Version)","description":"\u003cp\u003eThis piston head features: - Viton O-ring with a ventilated design. - No air brake, with short, medium, and long air brake options (for 4.60 mm inner nozzle, only for TAC-41 GBB stock). - POM piston ring - NBR 80° O-ring damper - CNC stainless steel construction, for additional piston mass (from 30.2 to 32.2 grams, instead of 7.6 grams for the original piston head) An air brake cuts the airflow before the piston hits the bottom of the cylinder, creating an air cushion that reduces impact noise, possibly at the cost of reduced muzzle energy. Compatible with: - original SRS piston (SBA-BPS-13) - original TAC-41 piston (SBA-BPS-30) - variable mass piston for SRS (SBA-BPS-18) - variable mass piston for TAC-41 (SBA-BPS-31) - steel variable mass piston body (SBA-BPS-XX)\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552278540629,"sku":"SP-SBA-BPH-02","price":35.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/bph-013_54e86971-fd02-45d7-bfa0-fef59f367128.jpg?v=1771967232"},{"product_id":"silverback-tac-41-advanced-piston-head","title":"Advanced Piston Head (SRS \u0026 TAC-41)","description":"\u003cp\u003eThis piston head features: - Viton O-ring with a vented design. - No airbrake, with short, medium, and long airbrake options (for 4.00 mm inner nozzle - for original SRS and TAC-41 stock - POM piston ring - NBR 80° ring damper - CNC stainless steel construction for additional piston mass (from 30.2 to 31.7 grams, instead of 7.6 grams for the original piston head) An airbrake cuts off the airflow before the piston hits the bottom of the cylinder, creating an air cushion that reduces impact noise, possibly at the expense of muzzle energy Compatible with: - original SRS piston (SBA-BPS-13) - original TAC-41 piston (SBA-BPS-30) - variable mass piston for SRS (SBA-BPS-18) - variable mass piston for TAC-41 (SBA-BPS-31) - steel variable mass piston body (SBA-BPS-33)\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552279228757,"sku":"SP-SBA-BPH-01","price":42.25,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/bph-022_70647f60-9526-442c-9fdd-f26b6a13e02a.jpg?v=1771967229"},{"product_id":"stalker-scorpion-piston-conversion-kit-srs","title":"Scorpion Piston Conversion Kit for SRS to TAC-41","description":"\u003cp\u003e\u003cstrong\u003eStalker Scorpion Piston SRS to TAC-41 Conversion Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWith this kit, you can convert your Stalker Scorpion SRS piston into a Stalker Scorpion TAC-41 version.\u003cbr\u003eLubricate the piston cup with oil such as motor oil, sewing machine oil, or grease like TechT before use.\u003c\/p\u003e\n\u003cp\u003eThe kit includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStalker stainless steel spring guide\u003c\/li\u003e\n\u003cli\u003eStalker TAC-41 end cap\u003c\/li\u003e\n\u003cli\u003eStalker rear guide ring (FPS adjuster)\u003c\/li\u003e\n\u003cli\u003eStalker front guide ring\u003c\/li\u003e\n\u003cli\u003ePiston cup (also compatible with Stalker Scorpion SRS piston)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIf you have any issues or questions about this or other Stalker products, visit our Stalker Owners Group on Facebook here:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ehttps:\/\/www.facebook.com\/groups\/329589544772075\/\u003c\/p\u003e\n\u003cp\u003eYou can follow all my live streams, photos, and updates on my Instagram, Facebook, or YouTube channels here:\u003c\/p\u003e\n\u003cp\u003eFacebook: https:\/\/www.facebook.com\/StalkerAirsoftDesigns\/\u003cbr\u003eInstagram: https:\/\/www.instagram.com\/stalkerairsoftdesigns\/\u003cbr\u003eYoutube: https:\/\/www.youtube.com\/channel\/UCWsBiSHlu-lbcnGQWAkeJWQ\u003c\/p\u003e\n\u003cp\u003eFor more information on Stalker products, technical guides, and build tutorials, visit: www.stalkerairsoft.com\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52552392311125,"sku":"SP-STAL-148","price":39.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/148a2418.webp?v=1776162770"},{"product_id":"stalker-scorpion-piston-ultimate-edition-tac-41","title":"Scorpion Piston - TAC-41 (Ultimate Edition)","description":"\u003cp\u003e\u003cstrong\u003eStalker Scorpion TAC-41 Piston!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSTALKER:\u003cbr\u003eAfter designing the Stalker Scorpion SRS and Scorpion VSR editions, it was time for the TAC-41 edition.\u003c\/p\u003e\n\u003cp\u003eThe Stalker Scorpion piston features an extremely modular design, originally conceived from scratch on my drafting table. It offers every option enthusiasts could desire for their piston. This unique concept uses six weights to form the piston body itself; since the piston is composed of these weights, you can extend it with additional weights (short stroke \/ short pull), which in turn reduces cylinder volume and joule output—but benefits from a shorter trigger pull and reduced piston travel.\u003c\/p\u003e\n\u003cp\u003eComplete Parts List:\u003cbr\u003e1x Aluminum piston head\u003cbr\u003e5x Aluminum center weights\u003cbr\u003e1x Steel piston head\u003cbr\u003e4x Steel gold-coated weights\u003cbr\u003e1x Piston cup\u003cbr\u003e1x Brass air brake\u003cbr\u003e1x Air brake nut\u003cbr\u003e1x STALKER-engraved spring guide\u003cbr\u003e1x Front guide ring\u003cbr\u003e1x Rear guide ring\u003cbr\u003e1x End cap\u003cbr\u003e1x O-ring kit\u003c\/p\u003e\n\u003cp\u003eThe 6-piece configuration allows for 12 different setups. Extending the piston with an additional weight gives you 12 more configurations to choose from.\u003c\/p\u003e\n\u003cp\u003eHere are the 6-piece configurations:\u003c\/p\u003e\n\u003cp\u003eTAC41 Scorpion 62g (1x aluminum head, 5x aluminum center sections)\u003cbr\u003eTAC41 Scorpion 76g (1x aluminum head, 1x steel center section, 4x aluminum center sections)\u003cbr\u003eTAC41 Scorpion 80g (1x steel head, 5x aluminum center sections)\u003cbr\u003eTAC41 Scorpion 89g (1x aluminum head, 2x steel center sections, 3x aluminum center sections)\u003cbr\u003eTAC41 Scorpion 93g (1x steel head, 1x steel center section, 4x aluminum center sections)\u003cbr\u003eTAC41 Scorpion 102g (1x aluminum head, 3x steel center sections, 2x aluminum center sections)\u003cbr\u003eTAC41 Scorpion 107g (1x steel head, 2x steel center sections, 3x aluminum center sections)\u003cbr\u003eTAC41 Scorpion 115g (1x aluminum head, 4x steel center sections, 1x aluminum center section)\u003cbr\u003eTAC41 Scorpion 119g (1x steel head, 3x steel center sections, 2x aluminum center sections)\u003cbr\u003eTAC41 Scorpion 128g (1x aluminum head, 5x steel center sections)\u003cbr\u003eTAC41 Scorpion 133g (1x steel head, 4x steel center sections, 1x aluminum center section)\u003cbr\u003eTAC41 Scorpion 145g (1x steel head, 5x steel center sections) (Requires 1 additional gold weight, sold separately)\u003c\/p\u003e\n\u003cp\u003eI'll explain the features of this piston below.\u003c\/p\u003e\n\u003cp\u003eThe cups are made from high-quality durable rubber and have been tested and tuned for optimal performance with currently available cylinders. Piston cups are available in two versions.\u003c\/p\u003e\n\u003cp\u003eBlack Cup\u003c\/p\u003e\n\u003cp\u003eLubricate the piston cup with motor oil, sewing machine oil, or TechT grease before use.\u003c\/p\u003e\n\u003cp\u003eZero loading friction.\u003cbr\u003eThumb-block air seal\u003cbr\u003eImproved joule output.\u003cbr\u003eFaster reload (lighter pull).\u003cbr\u003eAlso compatible with SRS Scorpion\u003cbr\u003eThe piston comes with multiple interchangeable body weights (depending on product edition) to perfectly tune your SRS.\u003c\/p\u003e\n\u003cp\u003eAvailable in black anodized aluminum, each piece weighs: 7 grams\u003cbr\u003eAvailable in gold-coated, polished steel, each piece weighs: 21 grams\u003cbr\u003eAdditionally, the piston head is also available in these versions.\u003c\/p\u003e\n\u003cp\u003eBlack anodized aluminum, each head weighs: 8 grams\u003cbr\u003eGold-coated, polished steel, each head weighs: 24 grams\u003cbr\u003eThis allows you to configure the piston between ~65 to 148 grams, enabling you to tailor it for any joule output level.\u003c\/p\u003e\n\u003cp\u003eAdditionally, the piston includes an adjustable air brake.\u003c\/p\u003e\n\u003cp\u003e1x Adjustable brass air brake. (Optional O-ring)\u003c\/p\u003e\n\u003cp\u003eThis is a thick, non-tapered brass air brake. This air brake is the most 'direct' working air brake—once the fuel...\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52552392966485,"sku":"SP-STAL-147","price":99.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image-8_b1f7a488-e645-4678-81ae-e20b3d0308d2.jpg?v=1771967073"},{"product_id":"silverback-tac-41-bolt-slider-set-4x","title":"TAC 41 Bolt Slider Set (4x)","description":"\u003cp\u003eTAC 41 Bolt Slider Set (4x)\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552433402197,"sku":"SP-SBA-RCV-31","price":6.05,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/sba-rcv-31-400x400_0802da8e-d23c-4adc-8f80-83506bbb2970.jpg?v=1771966862"},{"product_id":"silverback-tac-41-trigger-piston-sear","title":"TAC 41  Trigger Piston Sear","description":"\u003cp\u003eTAC 41 Trigger Piston Sear\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552434942293,"sku":"SP-SBA-PTS-04","price":18.15,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image-46_0c00198b-c3ba-4891-b027-b5d2d872b468.jpg?v=1771966835"},{"product_id":"silverback-tac-41-twisted-cylinder","title":"TAC 41 Twisted Cylinder","description":"\u003cp\u003eTAC-41 stainless steel cylinder.\u003c\/p\u003e\n\u003cp\u003eFeatures an external PVD coating (physical vapor deposition of titanium and aluminum nitride).\u003c\/p\u003e\n\u003cp\u003eThis cylinder has a deep fluted pattern—it doesn't improve performance, but looks amazing!\u003c\/p\u003e\n\u003cp\u003eStock not included.\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552435401045,"sku":"SP-SBA-CYL-34","price":114.65,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/sba-cyl-321.jpg?v=1771966825"},{"product_id":"silverback-tac-41-cylinder-head","title":"TAC 41 Cylinder Head","description":"\u003cp\u003eTAC 41 Cylinder Head\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552435466581,"sku":"SP-SBA-CYL-36","price":18.15,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/sba-cyl-32-1l.jpg?v=1771966823"},{"product_id":"silverback-tac-41-stainless-steel-pvd-cylinder","title":"TAC 41 Stainless Steel PVD Cylinder","description":"\u003cp\u003eTAC-41 stainless steel cylinder.\u003c\/p\u003e\n\u003cp\u003eFeatures an external PVD coating (physical vapor deposition of titanium and aluminum nitride).\u003c\/p\u003e\n\u003cp\u003eStock not included.\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552435564885,"sku":"SP-SBA-CYL-31","price":54.45,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/sba-cyl-31_0a1f5be8-52b5-46f4-8d04-e881d88a4a3c.jpg?v=1771966821"},{"product_id":"silverback-tac-41-complete-bolt-piston","title":"TAC 41 Complete Bolt","description":"\u003cp\u003eComplete TAC-41 bolt assembly, including all parts of the T41-0300 set.\u003c\/p\u003e\n\u003cp\u003e- CNC aerospace-grade aluminum end cap\u003c\/p\u003e\n\u003cp\u003e- Steel bolt equipped with black Vauban bolt knob (SBA-BKB-09BK)\u003c\/p\u003e\n\u003cp\u003e- Stainless steel cylinder (black PVD coating) + stock\u003c\/p\u003e\n\u003cp\u003e- Stainless steel spring guide with thrust bearing\u003c\/p\u003e\n\u003cp\u003e- 75 Newton spring\u003c\/p\u003e\n\u003cp\u003e- CNC 6000-series aluminum piston with steel piston tip and silent piston head (70° NBR)\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552435892565,"sku":"SP-SBA-CYL-30","price":114.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/sba-cyl-30-2_64019589-64aa-4dbd-869c-33deec0a6263.jpg?v=1771966811"},{"product_id":"silverback-tac-41-variable-mass-piston-red","title":"TAC-41 Variable Mass Piston (Red) | Piston Cup NBR 70 (Black)","description":"\u003cp\u003eTAC-41 variable mass piston\u003c\/p\u003e\n\u003cp\u003e- Piston cup NBR (70°)\u003c\/p\u003e\n\u003cp\u003e- Piston head CNC AL 6061 T6\u003c\/p\u003e\n\u003cp\u003e- Piston body CNC AL 6061 T6\u003c\/p\u003e\n\u003cp\u003e- CNC steel piston end\u003c\/p\u003e\n\u003cp\u003e- CNC aluminum counterweight (4 pieces)\u003c\/p\u003e\n\u003cp\u003e- CNC steel counterweight (4 pieces)\u003c\/p\u003e\n\u003cp\u003e- PTFE grease\u003c\/p\u003e\n\u003cp\u003e- Tools included\u003c\/p\u003e\n\u003cp\u003eThis special piston allows you to adjust the muzzle energy of your TAC-41 by varying the piston mass from 39 to 135 grams across 15 different configurations.\u003c\/p\u003e\n\u003cp\u003eFollow the tutorial video.\u003c\/p\u003e\n\u003cp\u003eFor optimal performance, use our spreadsheet.\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552436121941,"sku":"SP-SBA-BPS-31","price":60.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/sba-bps-311_d5ee5b14-73c4-420d-8523-29fe6b3dd36d.jpg?v=1771966804"},{"product_id":"silverback-tac-41-piston","title":"TAC-41 Piston","description":"\u003cp\u003eTAC-41 piston.\u003c\/p\u003e\n\u003cp\u003e- CNC machined 6000 series aluminum body (red anodized),\u003c\/p\u003e\n\u003cp\u003e- steel piston end\u003c\/p\u003e\n\u003cp\u003e- silent piston head (70° NBR material).\u003c\/p\u003e\n\u003cp\u003e52 grams.\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552436187477,"sku":"SP-SBA-BPS-30","price":16.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/sba-bps-30_4bbfd5df-d369-48b4-b344-ac53e2925da8.jpg?v=1771966801"},{"product_id":"silverback-tac-41-type-piston-end","title":"TAC-41 Type Piston End","description":"\u003cp\u003eTAC-41 piston end (T41-0308).\u003c\/p\u003e\n\u003cp\u003eCarbon steel, CNC machined.\u003c\/p\u003e\n\u003cp\u003eCan be used to convert an SRS piston into a TAC-41 piston (including variable mass pistons).\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":52552436253013,"sku":"SP-SBA-BPE-03","price":6.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/sba-bpe-03_0a7c4804-a44c-406f-8441-a7f267e79158.jpg?v=1771966799"},{"product_id":"stalker-tac-41-airbrake-nozzle","title":"TAC-41 GBB Airbrake Set for Scorpion","description":"\u003cp\u003eTAC-41 GBB Scorpion Airbrake set manufactured from stainless steel.\u003c\/p\u003e\n\u003cp\u003eThis product is required to optimally use your Stalker piston in your TAC-41 if installed in the Stalker Kraken TAC41 TDC Hop-Up chamber or the Silverback GBB cylinder and Hop-Up head. The inner diameter of these nozzles is wider and requires a thicker airbrake for optimal performance.\u003c\/p\u003e\n\u003cp\u003eThis airbrake has a 4.00 mm diameter and comes in two lengths; both are adjustable by inserting them deeper into the piston. The airbrake features two cuts for installing small O-rings if you wish to experiment—these are not required and are not included in this package.\u003c\/p\u003e\n\u003cp\u003eThis package includes:\u003c\/p\u003e\n\u003cp\u003e1x 4.00 mm short airbrake (optimal for 3J~ or higher models).\u003cbr\u003e1x 4.00 mm long airbrake (optimal for 2J~ or lower builds).\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52552437399893,"sku":"SP-STAL-229","price":9.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/image_ae227c95-a81c-4c74-8c07-8bfb340b0e0a.jpg?v=1771966783"},{"product_id":"stalker-scorpion-srs-tac41-high-joule-piston-head","title":"High Joule Piston Head for Scorpion SRS\/TAC41","description":"\u003cp\u003eThis SRS\/TAC41 piston cup offers very easy cocking while delivering high joule output, remaining quiet when the airbrake is properly adjusted.\u003c\/p\u003e\n\u003cp\u003eThe Stalker High Joule cup enables you to upgrade with a 2J spring in 3J setups, or 3J springs in 4J setups—for example, the Stalker Scorpion piston with original SRS or TAC Silverback spring and 420mm inner barrel fires ~2J with .48 BBs.\u003c\/p\u003e\n\u003cp\u003eThis cup is compatible with SRS or TAC41 cylinders. Use a small amount of oil-based lubricant for optimal performance; we recommend motor oil silicone grease or similar.\u003c\/p\u003e\n\u003cp\u003eAs a reference, a 2J+ Blue spring delivers ~3J on an SRS with Stalker SRS cylinder + 420mm inner barrel.\u003c\/p\u003e\n\u003cp\u003eThe original cylinder will produce slightly fewer joules. Results may vary depending on the cylinder used.\u003c\/p\u003e\n\u003cp\u003eWe also offer an extremely quiet piston cup that reduces joules to near standard spring output, but is easier to make ultra-quiet.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eZero loading friction.\u003c\/li\u003e\n\u003cli\u003eThumb-sealed.\u003c\/li\u003e\n\u003cli\u003eHigh joule output.\u003c\/li\u003e\n\u003cli\u003eFast cocking (lighter pull) due to a looser spring that still delivers significantly more joules.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYou can follow all my live streams, photos, and info on my YouTube, Facebook, or Instagram channels here:\u003c\/p\u003e\n\u003cp\u003eFacebook: \u003ca href=\"https:\/\/www.facebook.com\/StalkerAirsoftDesigns\/\" target=\"_blank\" rel=\"noreferrer noopener\"\u003ehttps:\/\/www.facebook.com\/StalkerAirsoftDesigns\/\u003c\/a\u003e\u003cbr\u003eInstagram: \u003ca href=\"https:\/\/www.instagram.com\/stalkerairsoftdesigns\/\" target=\"_blank\" rel=\"noreferrer noopener\"\u003ehttps:\/\/www.instagram.com\/stalkerairsoftdesigns\/\u003c\/a\u003e\u003cbr\u003eYoutube: \u003ca href=\"https:\/\/www.youtube.com\/channel\/UCWsBiSHlu-lbcnGQWAkeJWQ\" target=\"_blank\" rel=\"noopener\"\u003ehttps:\/\/www.youtube.com\/channel\/UCWsBiSHlu-lbcnGQWAkeJWQ\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eFor more information on Stalker products and technical build guides, visit: \u003cb\u003e\u003ca href=\"http:\/\/www.stalkerairsoft.com\/\" target=\"_blank\" rel=\"noopener\"\u003ewww.stalkerairsoft.com\u003c\/a\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"STALKER","offers":[{"title":"Default Title","offer_id":52552470036821,"sku":"SP-STAL-55","price":14.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/blackcup1_5301afd1-32e2-49ed-a6e5-9af91d2a3210.jpg?v=1771966253"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/collections\/image_ae227c95-a81c-4c74-8c07-8bfb340b0e0a.jpg?v=1779071034","url":"https:\/\/www.skirmshop.es\/en-ca\/collections\/tac-41-pistons-cylinders.oembed?page=2","provider":"Skirmshop Spain","version":"1.0","type":"link"}