Product DescriptionThe Rosco Manufacturing Bloodline 14.5-inch 5.56 NATO barrel is built for AR-15 style builds that demand dependable performance and durability. Designed around USASOC specifications for an Improved Upper Receiver Group, this M4-pattern, mid-length gas barrel helps deliver a smoother gas curve and more managed dwell time for a well-balanced shooting experience. Manufactured from 4150 chrome moly vanadium (CMV) steel and finished in nitride for enhanced wear and corrosion resistance, it features a 1:7 twist rate for stabilizing a wide range of common 5.56 projectiles.Product Highlights14.5-inch 5.56 NATO AR-15 barrel designed around USASOC Improved Upper Receiver Group specificationsMid-length gas system for a smoother gas curve and balanced cycling4150 CMV steel construction with durable nitride finish for long service lifeGovernment profile M4-style contour for a proven blend of handling and durability1/2x28 muzzle threads and .750 gas block journal for broad parts compatibilitySpecsBrand: Rosco ManufacturingSeries/Model: BloodlineCaliber: 5.56 NATOBarrel Length: 14.5 inProfile: Government (M4)Gas System Length: Mid-LengthTwist Rate: 1:7Material: 4150 Chrome Moly Vanadium (CMV) steelFinish: NitrideGas Block Journal: .750Muzzle Threads: 1/2x28Manufacturer Part Number: BL-145-GVT-556-7-MUPC: 181969500050Disclaimer: 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.