{"product_id":"faxon-firearms-ff556bcnitride-5-56-nato-black-nitride-9310-steel-ar-15-bolt","title":"Faxon Firearms FF556BCNITRIDE 5.56 NATO Black Nitride 9310 Steel AR-15 Bolt","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eFaxon Firearms FF556BCNITRIDE\u003c\/span\u003e\u003c\/strong\u003e is a precision-machined \u003cstrong\u003eAR-15 bolt\u003c\/strong\u003e manufactured from \u003cstrong\u003e9310 tool steel\u003c\/strong\u003e and treated with a durable \u003cstrong\u003eblack nitride\u003c\/strong\u003e finish. Designed as a direct replacement bolt for the \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e5.56 NATO\u003c\/span\u003e\u003c\/strong\u003e AR-15\/M16 platform, this bolt is engineered for reliable cycling, long service life, and consistent function in demanding shooting conditions.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eFaxon machines each bolt from \u003cstrong\u003e9310 tool steel\u003c\/strong\u003e, a premium alloy selected for its outstanding toughness and fatigue resistance under high-pressure firing cycles. The \u003cstrong\u003eblack nitride\u003c\/strong\u003e surface treatment increases surface hardness, reduces friction against the bolt carrier, and provides excellent corrosion protection, helping the bolt maintain smooth operation over extended use.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eBuilt to standard AR-15 bolt dimensions, the \u003cstrong\u003eFF556BCNITRIDE\u003c\/strong\u003e drops into 5.56 NATO and compatible .223 Remington upper receivers. Every bolt is \u003cstrong\u003eMPI (Magnetic Particle Inspected)\u003c\/strong\u003e to verify structural integrity before it leaves the factory. Whether you are assembling a new build, replacing a worn bolt, or upgrading an existing rifle, this bolt delivers the consistent quality and dependability that Faxon Firearms is known for.\u003c\/span\u003e\u003c\/p\u003e","brand":"Faxon Firearms","offers":[{"title":"Default Title","offer_id":55051266457922,"sku":"181950","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_7088e1c8-df41-4d77-b840-0ca4c52adc1a.png?v=1784716684","url":"https:\/\/centerfiresystems.com\/products\/faxon-firearms-ff556bcnitride-5-56-nato-black-nitride-9310-steel-ar-15-bolt","provider":"Centerfire Systems","version":"1.0","type":"link"}