{"product_id":"rosco-manufacturing-bloodline-12-5-5-56-nato-4150-cmv-nitride-ar-15-barrel-bl-125-m4-556-7-c","title":"Rosco Manufacturing Bloodline 12.5\" 5.56 NATO 4150 CMV Nitride AR-15 Barrel BL-125-M4-556-7-C","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Rosco Manufacturing Bloodline 12.5\" 5.56 NATO barrel is purpose-built to bridge the gap between Short Barreled Rifle (SBR)\/Pistol and Reconnaissance (RECCE) platforms, delivering outstanding precision performance in a compact package. Designed and manufactured entirely in-house by Rosco Manufacturing, this barrel is crafted from premium 4150 Chrome Moly Vanadium (CMV) steel and engineered to outperform the competition while standing up to heavy, sustained use. The Government profile and Carbine Length gas system make it the ideal foundation for the ultimate intermediate patrol platform. A Nitride finish on both the barrel and barrel extension provides superior corrosion resistance and long-term durability, while the 1\/2x28 threaded muzzle ensures compatibility with a wide range of standard AR-15 muzzle devices.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium 4150 CMV Steel:\u003c\/strong\u003e Machined from 4150 Chrome Moly Vanadium steel for exceptional strength, reliability, and longevity under demanding conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Nitride Treatment:\u003c\/strong\u003e Both the barrel and barrel extension receive a Nitride finish, providing superior wear resistance, corrosion protection, and a consistent matte black appearance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGovernment Profile with Carbine Length Gas System:\u003c\/strong\u003e Optimized for a compact 12.5\" build, delivering the balance of maneuverability and reliable cycling needed for SBR and pistol platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1:7 Twist Rate:\u003c\/strong\u003e Stabilizes a broad range of 5.56 NATO projectile weights for versatile, accurate performance across various ammunition types.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1\/2x28 Threaded Muzzle with 11-Degree Crown:\u003c\/strong\u003e Compatible with standard AR-15 muzzle devices, and the precision 11-degree target crown protects the bore and promotes consistent shot-to-shot accuracy.\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\u003eMPN:\u003c\/strong\u003e BL-125-M4-556-7-C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 181969500036\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 5.56 NATO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 12.5\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Weight:\u003c\/strong\u003e 21.79 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 Profile:\u003c\/strong\u003e Government\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwist Rate:\u003c\/strong\u003e 1:7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Pattern:\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 Length\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  \u003cli\u003e\n\u003cstrong\u003eCompatible Platform:\u003c\/strong\u003e AR-15\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":"ROSCO MANUFACTURING","offers":[{"title":"Default Title","offer_id":44134809141370,"sku":"FLX-179459","price":157.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/308989131.png?v=1781060987","url":"https:\/\/tlooutdoors.com\/products\/rosco-manufacturing-bloodline-12-5-5-56-nato-4150-cmv-nitride-ar-15-barrel-bl-125-m4-556-7-c","provider":"TLO Outdoors","version":"1.0","type":"link"}