Product Description The Rosco Manufacturing Bloodline Barrel in 5.56 NATO is purpose-built for shooters assembling a high-performance Short Barreled Rifle (SBR) or pistol platform. Machined from premium 4150 Chrome Moly Vanadium (CMV) steel and treated with a rugged Nitride finish, this 7.50" barrel delivers exceptional corrosion resistance, enhanced bore hardness, and long-term durability. The 1:7" twist rate ensures reliable stabilization across a wide range of 5.56 NATO projectiles, while the 1/2"x28 threaded muzzle makes it fully compatible with suppressors and muzzle devices. Engineered with suppressed use in mind, the Bloodline barrel balances a compact, maneuverable profile with the accuracy demands of serious shooters. Product Highlights Constructed from 4150 Chrome Moly Vanadium (CMV) steel for outstanding strength and long service life Nitride finish delivers superior corrosion resistance and a smooth bore surface for consistent shot-to-shot accuracy Compact 7.50" barrel length is ideally suited for SBR and pistol builds requiring a reduced-profile package 1:7" twist rate stabilizes a wide variety of 5.56 NATO ammunition, including heavier projectiles 1/2"x28 threaded muzzle is suppressor-ready and compatible with standard AR-platform muzzle devices Specs Brand: Rosco Manufacturing Model: Bloodline Caliber: 5.56 NATO Barrel Length: 7.50" Material: 4150 Chrome Moly Vanadium (CMV) Finish: Nitride Twist Rate: 1:7" Thread Pattern: 1/2"x28 Weight: 17.28 oz MPN: BL-075-M4-556-7-P UPC: 850039693168 Disclaimer: 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. ]]>