Product DescriptionReplace a worn barrel or complete a compact AR build with the Diamondback DB Barrel chambered in .300 Blackout. This 8.50-inch barrel is built from durable 4150 chrome moly vanadium (CMV) steel and finished in black nitride for enhanced corrosion resistance and easy cleaning. Featuring a pistol-length gas system and heavy profile, it's designed to deliver reliable function and solid performance in short-barrel configurations.Product Highlights 8.50-inch .300 Blackout barrel ideal for compact AR builds and OEM replacement projects 4150 chrome moly vanadium (CMV) steel construction for strength and longevity Black nitride finish helps resist corrosion and wear while simplifying maintenance Pistol-length gas system for short-barrel platform compatibility 1:8 twist rate suited for a wide range of .300 Blackout bullet weightsSpecs Brand: Diamondback Model: DB Barrel Caliber: .300 Blackout Barrel Length: 8.50 in Gas System Length: Pistol-length Profile: Heavy Twist Rate: 1:8 Finish: Black Nitride Material: 4150 Chrome Moly Vanadium (CMV) Steel Color: Black Weight: 1.2 lb MPN: 300P85H50B8R UPC: 815875019183Disclaimer: 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.