{"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":32.0,"currency_code":"GBP","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","url":"https:\/\/www.skirmshop.es\/en-gb\/products\/silverback-tac-41-advanced-piston-head","provider":"Skirmshop Spain","version":"1.0","type":"link"}