{"product_id":"faxon-firearms-ar-15-5-56-nato-9310-steel-bolt-salt-bath-nitride-mpi-tested-ff556bcnitride","title":"Faxon Firearms AR-15 5.56 NATO 9310 Steel Bolt, Salt Bath Nitride, MPI Tested FF556BCNITRIDE","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe Faxon Firearms 5.56 bolt is built for AR-15 platforms where reliability and long service life matter. Manufactured from 9310 tool steel and finished with a salt bath nitride treatment, this bolt is designed to increase surface hardness, reduce friction, and improve corrosion resistance compared to traditional phosphate finishes. Each bolt is Magnetic Particle Inspected (MPI) to help verify material integrity, and the lugs are chamfered for smoother, more reliable cycling. The extractor is made from S7 tool steel and comes assembled with a spring, silicone insert, and Crane O-ring to support consistent extraction.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Highlights\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e9310 tool steel bolt construction for durability in 5.56 NATO \/ .223 AR-15 applications\u003c\/li\u003e\n  \u003cli\u003eSalt bath nitride finish helps reduce friction and improve corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eMagnetic Particle Inspected (MPI) for added confidence in material integrity\u003c\/li\u003e\n  \u003cli\u003eChamfered bolt lugs promote reliable cycling, including with higher-pressure loads\u003c\/li\u003e\n  \u003cli\u003eS7 tool steel extractor with spring, silicone insert, and Crane O-ring installed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Faxon Firearms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e AR-15 bolt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber\/Cartridge:\u003c\/strong\u003e 5.56 NATO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt Material:\u003c\/strong\u003e 9310 tool steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtractor Material:\u003c\/strong\u003e S7 tool steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Salt bath nitride (black)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInspection\/Testing:\u003c\/strong\u003e Magnetic Particle Inspected (MPI)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt Lug Detail:\u003c\/strong\u003e Back of lugs chamfered for reliability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtractor Components:\u003c\/strong\u003e Spring, silicone insert, and Crane O-ring installed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt Face Depth:\u003c\/strong\u003e .125\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 816341020863\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e FF556BCNITRIDE\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the products manufacturer.\u003c\/em\u003e\u003c\/p\u003e","brand":"Faxon Firearms","offers":[{"title":"Default Title","offer_id":44076978438266,"sku":"FLX-FXFF556BCNITRIDE","price":60.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/283688448.jpg?v=1767587468","url":"https:\/\/tlooutdoors.com\/products\/faxon-firearms-ar-15-5-56-nato-9310-steel-bolt-salt-bath-nitride-mpi-tested-ff556bcnitride","provider":"TLO Outdoors","version":"1.0","type":"link"}