Product DescriptionBuild for Hornady's 6mm ARC with a dedicated CMMG barrel sub-assembly designed for AR-15 platforms. This 16.10-inch barrel is made from 416R stainless steel and finished in black nitride for enhanced durability and corrosion resistance. A rifle-length gas system and medium taper profile help balance handling and consistency, while the threaded muzzle makes it easy to add compatible muzzle devices.Product Highlights Dedicated 6mm ARC AR-15 barrel sub-assembly for accurate, repeatable performance 16.10-inch 416R stainless steel construction for strength and precision potential Black nitride (salt bath nitride) finish for improved wear and corrosion resistance Rifle-length gas system with a medium taper profile for balanced handling 5/8"-24 TPI threaded muzzle for common 6mm muzzle devices and suppressor mountsSpecs Brand: CMMG Manufacturer Part Number: 60D100C UPC: 810046230541 Platform/Fit: AR-15 Caliber: 6mm ARC Barrel Length: 16.10" Material: 416R Stainless Steel Finish: Black Nitride (Salt Bath Nitride) Gas System Length: Rifle Length Profile: Medium Taper Muzzle Threads: 5/8"-24 TPI Twist Rate: 1:7.5Disclaimer: 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.