Product DescriptionReplace a worn barrel or complete your next AR-15 build with the Diamondback DB Barrel in 5.56x45mm NATO. This 16-inch barrel is constructed from durable 4150 chrome moly vanadium (CMV) steel and finished in black nitride for enhanced corrosion resistance and reduced friction. A carbine-length gas system and heavy profile help support reliable function and improved heat management during extended shooting sessions.Product Highlights 16-inch 5.56x45mm NATO rifle barrel for AR-15 builds and replacements 4150 Chrome Moly Vanadium (CMV) steel construction for strength and longevity Black nitride finish improves corrosion resistance and wear performance Carbine-length gas system for common AR-15 compatibility 1:8 twist rate offers versatile stabilization across a wide range of 5.56 bullet weightsSpecs Brand: Diamondback Manufacturer Part Number: 556C16H50B8NYR UPC: 815875019046 Caliber: 5.56x45mm NATO Barrel Length: 16 in Material: 4150 Chrome Moly Vanadium (CMV) steel Finish: Black Nitride Gas System Length: Carbine-length Profile: Heavy Twist Rate: 1:8Disclaimer: 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.