{"product_id":"fail-zero-224-valkyrie-ar-15-bolt-carrier-group-exo-nickel-boron","title":"Fail Zero .224 Valkyrie AR-15 Bolt Carrier Group - EXO Nickel Boron","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eFail Zero .224 Valkyrie Bolt Carrier Group\u003c\/span\u003e\u003c\/strong\u003e is a complete, drop-in BCG purpose-built for \u003cstrong\u003eAR-15\u003c\/strong\u003e upper receivers chambered in \u003cstrong\u003e.224 Valkyrie\u003c\/strong\u003e. Every critical wear surface is finished in Fail Zero's signature \u003cstrong\u003eEXO Nickel Boron\u003c\/strong\u003e coating, which reduces friction, resists carbon adhesion, and makes routine cleaning a quick wipe-down rather than a full scrubbing session. The result is a BCG that runs cleaner, smoother, and longer between maintenance intervals than a standard phosphate or nitrided unit.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eAt the heart of this assembly is a \u003cstrong\u003e9310 steel bolt\u003c\/strong\u003e paired with a \u003cstrong\u003e8620 steel carrier\u003c\/strong\u003e, the Mil-Spec material pairing trusted across the AR-15 platform. The Nickel Boron treatment is applied to the bolt, carrier, gas key, and cam pin, providing uniform low-friction performance across the entire operating cycle. The BCG is engineered to handle the higher pressures and longer case dimensions of the \u003cstrong\u003e.224 Valkyrie\u003c\/strong\u003e cartridge while maintaining proper fit and headspacing in standard AR-15 upper receivers.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThis BCG is intended for use with a standard AR-15\/M16-style fire control group installed in your lower receiver. Overall dimensions measure \u003cstrong\u003e1.60\" x 3.80\" x 10.95\"\u003c\/strong\u003e, conforming to the standard AR-15 BCG footprint for direct drop-in installation into Mil-Spec uppers chambered in \u003cstrong\u003e.224 Valkyrie\u003c\/strong\u003e. Whether you are building a precision long-range .224 Valkyrie rifle, completing an upper, or replacing a worn BCG with a low-maintenance upgrade, this Fail Zero assembly delivers proven Mil-Spec construction with the self-cleaning convenience of a premium Nickel Boron finish.\u003c\/span\u003e\u003c\/p\u003e","brand":"Fail Zero","offers":[{"title":"Default Title","offer_id":55324652536130,"sku":"FZ224V01NH","price":166.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/alt_1c9fe07b-7454-46d8-a582-a411816baeef.jpg?v=1785151980","url":"https:\/\/centerfiresystems.com\/products\/fail-zero-224-valkyrie-ar-15-bolt-carrier-group-exo-nickel-boron","provider":"Centerfire Systems","version":"1.0","type":"link"}