{"product_id":"aero-precision-complete-308-win-7-62x51mm-nato-black-nitride-bolt-carrier-group-m5-aprh308186","title":"Aero Precision Complete .308 Win 7.62x51mm NATO Black Nitride Bolt Carrier Group M5 APRH308186","description":"Product Description\n\u003cp\u003eThe Aero Precision APRH308186 Complete .308 Win \/ 7.62x51mm NATO Black Nitride Bolt Carrier Group (BCG) is a precision-engineered firing mechanism built for the M5 platform and designed for demanding big-bore rifle builds. The carrier is machined from 8620 tool steel and finished in advanced black nitride, which reduces friction, minimizes lubrication requirements, and simplifies maintenance. The gas key is crafted from 4130 steel, secured with grade 8 hardware that is properly staked for lasting reliability. The bolt is case hardened 9310 steel, shot peened, black nitride coated, and features a precision ground external surface along with a reduced firing pin hole diameter for accurate timing. The firing pin is machined from 8740 steel with a high chrome coating. Forward assist serrations provide added functional utility, and laser-engraved Aero Precision branding adds a distinctive finishing touch. Multi-caliber compatibility supports .308 Win, 7.62x51mm NATO, 6.5 Creedmoor, .338 Federal, and other .308-based cartridges. Each BCG undergoes Magnetic Particle Inspection (MPI) and High Pressure Testing (HPT) to ensure dependable performance under the most demanding conditions. The complete kit includes a bolt carrier, complete bolt, firing pin, cam pin, retaining pin, and an Aero Precision \"A\" logo.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlack Nitride Finish:\u003c\/strong\u003e Advanced surface treatment reduces friction, lowers lubrication needs, and makes cleaning significantly easier compared to traditional phosphate finishes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Steel Construction:\u003c\/strong\u003e Carrier machined from 8620 tool steel with a 9310 bolt and 4130 steel gas key, delivering outstanding durability for high-demand rifle applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPI and HPT Tested:\u003c\/strong\u003e Every bolt carrier group undergoes Magnetic Particle Inspection and High Pressure Testing to guarantee consistent, reliable performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Caliber Compatibility:\u003c\/strong\u003e Designed to function with .308 Win, 7.62x51mm NATO, 6.5 Creedmoor, .338 Federal, and other .308-based cartridges for exceptional versatility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Ready-to-Install Kit:\u003c\/strong\u003e Includes bolt carrier, complete bolt, firing pin, cam pin, retaining pin, and Aero Precision \"A\" logo for a full drop-in installation experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Aero Precision\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e APRH308186\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 815421020168\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlatform:\u003c\/strong\u003e M5 (.308\/7.62)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber Compatibility:\u003c\/strong\u003e .308 Win, 7.62x51mm NATO, 6.5 Creedmoor, .338 Federal, and other .308-based cartridges\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarrier Material:\u003c\/strong\u003e 8620 Tool Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt Material:\u003c\/strong\u003e 9310 Steel (case hardened, shot peened)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Key Material:\u003c\/strong\u003e 4130 Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFiring Pin Material:\u003c\/strong\u003e 8740 Steel with high chrome coating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Nitride\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Key Hardware:\u003c\/strong\u003e Grade 8, properly staked\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTesting:\u003c\/strong\u003e MPI (Magnetic Particle Inspection) and HPT (High Pressure Testing)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForward Assist Serrations:\u003c\/strong\u003e Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Bolt carrier, complete bolt, firing pin, cam pin, retaining pin, Aero Precision \"A\" logo\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":44199592820858,"sku":"FLX-100531","price":256.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/308988405.png?v=1788357792","url":"https:\/\/tlooutdoors.com\/products\/aero-precision-complete-308-win-7-62x51mm-nato-black-nitride-bolt-carrier-group-m5-aprh308186","provider":"TLO Outdoors","version":"1.0","type":"link"}