{"product_id":"cmmg-10-5-5-56x45mm-barrel-sub-assembly-1-7-twist-carbine-gas-4140cm-cmm55d8d0a","title":"CMMG 10.5\" 5.56x45mm Barrel Sub-Assembly 1:7 Twist Carbine Gas 4140CM CMM55D8D0A","description":"\u003ch2\u003eCMMG Barrel Sub-Assembly - 10.5\", 5.56x45mm\u003c\/h2\u003e\n\n\u003cp\u003eBarrels are the heart of any rifle or pistol build, and CMMG delivers with precision-engineered components crafted to exacting quality standards. The CMMG 10.5\" 5.56x45mm Barrel Sub-Assembly is built from 4140 chrome moly steel with a Salt Bath Nitride (SBN) finish, offering outstanding corrosion resistance and durability in a compact, carbine-length package. Each barrel sub-assembly is properly headspaced at the factory, ensuring it is ready to drop into your next AR pistol or SBR build without guesswork. The 1:7 twist rate handles a wide range of 5.56 NATO and .223 Remington projectiles, while the 1\/2-28 muzzle threading accommodates most standard AR-platform muzzle devices.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Highlights\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision 4140 Chrome Moly Steel Construction:\u003c\/strong\u003e Machined from high-quality 4140CM steel for long-lasting strength and reliable performance under sustained fire.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSalt Bath Nitride (SBN) Finish:\u003c\/strong\u003e Provides superior corrosion and wear resistance compared to traditional phosphate finishes, extending barrel service life.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFactory Headspaced:\u003c\/strong\u003e Every barrel sub-assembly is headspaced at the CMMG facility, guaranteeing proper fit and reliable function right out of the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1:7 Twist Rate:\u003c\/strong\u003e Optimized for stabilizing a broad spectrum of 5.56x45mm projectiles, from lighter 55-grain loads to heavier 77-grain rounds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1\/2-28 Muzzle Threading:\u003c\/strong\u003e Compatible with a wide range of standard AR-platform muzzle devices, including flash hiders, compensators, and suppressors.\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 CMMG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e CMM55D8D0A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 810046235577\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 5.56x45mm (5.56 NATO)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 10.5\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Twist:\u003c\/strong\u003e 1:7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Contour:\u003c\/strong\u003e MT (Medium Taper)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Material:\u003c\/strong\u003e 4140 Chrome Moly (4140CM)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Salt Bath Nitride (SBN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMuzzle Thread:\u003c\/strong\u003e 1\/2-28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Port Location:\u003c\/strong\u003e Carbine\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","brand":"CMMG","offers":[{"title":"Default Title","offer_id":44199869120634,"sku":"FLX-CMM55D8D0A","price":198.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/308989385.jpg?v=1788383733","url":"https:\/\/tlooutdoors.com\/products\/cmmg-10-5-5-56x45mm-barrel-sub-assembly-1-7-twist-carbine-gas-4140cm-cmm55d8d0a","provider":"TLO Outdoors","version":"1.0","type":"link"}