{"product_id":"fz-exo-bolt-assembly","title":"FailZero EXO Bolt Assembly – AR-15\/M16","description":"\u003cp\u003eThe FailZero EXO Bolt Assembly is a direct replacement for AR-15 and M16 rifle platforms, engineered to reduce friction and improve reliability under adverse conditions. This assembly addresses wear points in standard mil-spec bolts by applying FailZero's EXO nickel boron coating to critical friction surfaces, extending service life and reducing cleaning time between maintenance intervals.\u003c\/p\u003e\u003cp\u003eThe entire assembly is coated with electroless nickel boron, creating a self-lubricating surface that resists carbon buildup and corrosion. The coating penetrates metal pores rather than sitting on the surface, maintaining dimensional tolerances while providing permanent lubricity. Installation is drop-in for standard AR-15\/M16 upper receivers with no fitting or gunsmithing required. Includes fully assembled bolt with extractor, ejector, cam pin, and firing pin.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Complete bolt assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15, M16, AR-15-pattern rifles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Mil-spec steel with EXO nickel boron coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e EXO nickel boron (silver)\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 body, extractor, ejector, cam pin, firing pin\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FailZero","offers":[{"title":"Default Title","offer_id":47938000716031,"sku":"FZEXO-BOLTASSEMBLY01","price":85.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1260880.jpg?v=1766499989","url":"https:\/\/doublestackstore.com\/products\/fz-exo-bolt-assembly","provider":"Double Stack Store","version":"1.0","type":"link"}