{"product_id":"rosco-manufacturing-bloodline-11-5-m4-5-56-nato-nitride-4150-cmv-barrel-bl-115-m4-556-7-c","title":"Rosco Manufacturing Bloodline 11.5\" M4 5.56 NATO Nitride 4150 CMV Barrel BL-115-M4-556-7-C","description":"Product Description\n\u003cp\u003eThe Rosco Manufacturing Bloodline 11.5\" M4 5.56 NATO Barrel is purpose-built for shooters who demand precision engineering in a compact package. Crafted from premium 4150 Chrome Moly Vanadium (CMV) steel and finished with a durable Nitride treatment, this barrel is designed to be the ideal foundation for any Short-Barreled Rifle (SBR) or pistol build. Rosco's Bloodline series reflects a commitment to modern carbine performance, incorporating properly managed dwell times, optimized gas port diameters, and carefully selected twist rates to deliver reliable function whether running suppressed, in a patrol carbine, or in a competition setup. With input from both civilian consumers and military end users, Rosco has engineered a barrel that meets real-world demands rather than relying on outdated specifications.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium 4150 CMV Steel Construction:\u003c\/strong\u003e Built from high-strength Chrome Moly Vanadium steel for exceptional durability and long service life in demanding conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNitride Finish Inside and Out:\u003c\/strong\u003e Both the barrel and barrel extension receive a Nitride finish, providing outstanding corrosion resistance and improved wear characteristics.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized Carbine Gas System:\u003c\/strong\u003e A carbine-length gas system with a .750\" gas block journal ensures reliable cycling across a wide variety of ammunition and suppressor configurations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1\/2x28 Threaded Muzzle:\u003c\/strong\u003e Standard 1\/2x28 threading allows compatibility with a wide range of muzzle devices, including flash hiders, compensators, and suppressors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1:7 Twist Rate for Modern Ammunition:\u003c\/strong\u003e The 1-in-7\" twist rate is optimized for stabilizing heavier .223\/5.56 NATO projectiles preferred by modern carbine shooters and military end users.\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 Rosco Manufacturing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Bloodline\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number (MPN):\u003c\/strong\u003e BL-115-M4-556-7-C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 181969500029\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 11.5\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Weight:\u003c\/strong\u003e 20.82 oz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Material:\u003c\/strong\u003e 4150 CMV\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Caliber:\u003c\/strong\u003e 5.56 NATO (.223 REM)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Profile:\u003c\/strong\u003e M4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwist Rate:\u003c\/strong\u003e 1:7\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Thread:\u003c\/strong\u003e 1\/2 x 28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Block Size:\u003c\/strong\u003e .750\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas System Length:\u003c\/strong\u003e Carbine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Crown:\u003c\/strong\u003e 11 Degree\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Finish:\u003c\/strong\u003e Nitride\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Extension Finish:\u003c\/strong\u003e Nitride\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":"ROSCO MANUFACTURING","offers":[{"title":"Default Title","offer_id":44199709802618,"sku":"FLX-179458","price":153.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/308988911.png?v=1788371313","url":"https:\/\/tlooutdoors.com\/products\/rosco-manufacturing-bloodline-11-5-m4-5-56-nato-nitride-4150-cmv-barrel-bl-115-m4-556-7-c","provider":"TLO Outdoors","version":"1.0","type":"link"}