{"product_id":"aero-precision-ar-15-5-56-nato-pro-series-bolt-carrier-group-black-nitride-aprh101767c","title":"Aero Precision AR-15 5.56 NATO PRO Series Bolt Carrier Group Black Nitride APRH101767C","description":"Aero Precision AR-15 5.56 NATO PRO Series Bolt Carrier Group - Black Nitride\n\u003cp\u003eThe Aero Precision PRO Series 5.56 Bolt Carrier Group is engineered from the ground up to withstand the demands of the most extreme conditions. Every component and every manufacturing process was deliberately selected to maximize the reliable service life of the bolt carrier group and its individual parts. From the 9310 steel bolt with its proprietary flash-nitride heat treatment to the M16-cut carrier with precision-ground internal surfaces, this BCG represents the pinnacle of AR-15 component engineering. Whether you are building a competition rifle or a duty firearm, the PRO Series BCG delivers consistent, smooth, and reliable performance from the first round to the last.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Highlights\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM16 Style Cut Carrier:\u003c\/strong\u003e Machined from 8620 steel with a nitride finish; internal critical surfaces are precision ground to exacting tolerances for optimal gas efficiency and ultra-smooth cycling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuperior 9310 Steel Bolt:\u003c\/strong\u003e Shot peened and Mag Particle Inspected (MPI) tested; heat treated via a proprietary flash-nitride process that delivers superior strength and durability compared to standard C158 steel.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Cam Pin with Engraved Indexing Mark:\u003c\/strong\u003e Machined from 4140 steel and precision ground after heat treatment; the engraved indexing mark ensures consistent installation to reduce wear on both the cam pin and bolt over time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMil-Spec Gas Key:\u003c\/strong\u003e Machined from hardened 4140 steel, torqued to spec with grade 8 hex fasteners, properly staked to mil-spec, and finished with a nitride coating for lasting corrosion resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eS7 Tool Steel Ejector and 8640 Steel Firing Pin:\u003c\/strong\u003e Each component is purpose-built from performance-grade materials with nitride finishes to ensure long-term reliability under sustained fire.\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 Aero Precision\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e PRO Series Bolt Carrier Group\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber\/Cartridge:\u003c\/strong\u003e 5.56mm NATO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Platform:\u003c\/strong\u003e AR-15\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarrier Style:\u003c\/strong\u003e M16 Cut\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Nitride\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt Material:\u003c\/strong\u003e 9310 Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarrier Material:\u003c\/strong\u003e 8620 Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCam Pin Material:\u003c\/strong\u003e 4140 Steel (precision ground, heat treated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Key Material:\u003c\/strong\u003e Hardened 4140 Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEjector Material:\u003c\/strong\u003e S7 Tool Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFiring Pin Material:\u003c\/strong\u003e 8640 Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt Treatment:\u003c\/strong\u003e Shot Peened, MPI Tested, Flash Nitride Heat Treated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Key Staking:\u003c\/strong\u003e Mil-Spec, Grade 8 Hex Fasteners\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 11.4 oz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 11.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 4.00 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Manufacture:\u003c\/strong\u003e United States\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 815421029949\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e APRH101767C\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 product's manufacturer.\u003c\/em\u003e\u003c\/p\u003e\n]]\u0026gt;","brand":"Aero Precision","offers":[{"title":"Default Title","offer_id":44134872809594,"sku":"FLX-APRH101767C","price":198.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/308987332.jpg?v=1781062507","url":"https:\/\/tlooutdoors.com\/products\/aero-precision-ar-15-5-56-nato-pro-series-bolt-carrier-group-black-nitride-aprh101767c","provider":"TLO Outdoors","version":"1.0","type":"link"}