{"product_id":"retro-arms-m4-hop-up-chamber","title":"Hop-Up Chamber for M4","description":"\u003cp\u003eThe Retro ARMS design is very similar to the recent MaxModel chamber design, but significantly more affordable and, in our opinion, with better finishes and higher quality.\u003c\/p\u003e\n\u003cp\u003eHop-Up chamber for M4-type replicas.\u003c\/p\u003e\n\u003cp\u003eRetro ARMS chambers feature components machined from CNC aluminum EN AW 2007 and EN AW 7075; the adjustment wheel is made of polypropylene. The adjustment mechanism is highly effective because the lever does not bend due to the materials used. Its design allows precise adjustment within a 2 mm range with 0.01 mm increments.\u003c\/p\u003e\n\u003cp\u003eThe chamber is 100% compatible with Retro ARMS gearboxes, but also fits standard zinc gearboxes. However, please note we cannot guarantee absolute and perfect fit.\u003c\/p\u003e\n\u003cp\u003eThe Hop-Up chamber is equipped with an O-ring to prevent BB drop.\u003c\/p\u003e\n\u003cp\u003eThe Hop-Up protrusion is integrated into the pressure lever, ensuring it won't fall out during assembly\/disassembly. Optional pressure levers are available for experimental setups.\u003c\/p\u003e\n\u003cp\u003eThe chamber surface is anodized in black and red.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eBest value-for-quality ratio in our lineup.\u003c\/p\u003e","brand":"retro ARMS","offers":[{"title":"Default Title","offer_id":52552476623189,"sku":"SP-RETARMS-01","price":55.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/hop-up-chamber-for-m4_8808f211-27aa-4b0e-93ed-445619f1f01b.jpg?v=1771966171","url":"https:\/\/www.skirmshop.es\/en-ca\/products\/retro-arms-m4-hop-up-chamber","provider":"Skirmshop Spain","version":"1.0","type":"link"}