Product Description The White Label Armory WLA-BRL-4005 is a precision-engineered AR-15 barrel chambered in 5.56 NATO, built to deliver reliable performance for tactical, competition, and sport shooting. Measuring 14.5 inches in length and featuring the classic Government Profile contour, this barrel strikes an ideal balance between weight reduction and structural rigidity. Machined from 4150 Chrome Moly Vanadium (CMV) steel, it provides exceptional durability and resistance to wear under sustained fire. A 1:7 twist rate ensures excellent stabilization of heavier projectiles commonly used in 5.56 NATO loads, making this barrel a versatile and dependable upgrade for any AR-15 build. Product Highlights 5.56 NATO / .223 Remington Compatibility: Chambered to accept both 5.56 NATO and .223 Remington ammunition, offering broad versatility for a variety of shooting applications. Government Profile Contour: Military-inspired barrel profile that delivers a proven balance of weight savings and structural strength trusted by professionals and enthusiasts alike. 4150 CMV Steel Construction: Made from high-grade Chrome Moly Vanadium steel for superior durability, heat resistance, and long-term service life. 1:7 Twist Rate: Optimized to stabilize heavier 5.56 NATO projectiles for improved accuracy and consistent downrange performance. 14.5-Inch Barrel Length: Compact and maneuverable length well suited for tactical configurations while preserving meaningful ballistic velocity. Specs Brand: White Label Armory Model: AR15 MPN: WLA-BRL-4005 UPC: 810155160548 Caliber: 5.56 NATO / .223 Remington Barrel Length: 14.5" Barrel Profile: Government Profile Twist Rate: 1:7" Material: 4150 Chrome Moly Vanadium (CMV) Steel 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.