{"product_id":"fz-ar15-bolt-carrier-group","title":"FailZero AR-15 Bolt Carrier Group – Mil-Spec AR-15\/M16","description":"\u003cp\u003eThe FailZero AR-15 Bolt Carrier Group replaces your factory BCG with a component engineered for reduced friction and enhanced reliability. Built to mil-spec dimensions, this BCG features FailZero's proprietary EXO nickel boron coating, which embeds a permanent dry lubricant into the surface. The result is a carrier group that runs cleaner, requires less maintenance, and resists carbon buildup better than traditional phosphate or nitride finishes.\u003c\/p\u003e\u003cp\u003eMachined from mil-spec Carpenter 158 steel (bolt) and 8620 steel (carrier), this BCG is MPI and HPT tested. The EXO coating is applied to all contact surfaces, reducing metal-on-metal friction without additional lubricants. Installation is drop-in for any mil-spec AR-15 or M16 upper receiver. No gunsmithing required—simply remove your old BCG and install this one. Includes bolt, carrier, gas key (properly staked), cam pin, and firing pin.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Bolt Carrier Group (BCG)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e Mil-Spec AR-15, M16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Carpenter 158 Steel (Bolt), 8620 Steel (Carrier)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e EXO Nickel Boron Coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Bolt, Carrier, Gas Key (Staked), Cam Pin, Firing Pin\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FailZero","offers":[{"title":"Default Title","offer_id":47937989181695,"sku":"FZ009-FZAR15-01-NH","price":141.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1260861.jpg?v=1766499950","url":"https:\/\/doublestackstore.com\/products\/fz-ar15-bolt-carrier-group","provider":"Double Stack Store","version":"1.0","type":"link"}