Product DescriptionThe Rosco Manufacturing K9 16" barrel is built for hard use and balanced handling in a 5.56 NATO AR-15 platform. It features an intermediate-length gas system with an optimized gas port designed to run reliably suppressed and/or unsuppressed. The K9 continuous taper profile is engineered to dissipate heat effectively, while shifting weight toward the rear of the barrel to help counter modern forward-mounted accessories for improved overall rifle balance. Finished in nitride and featuring an updated target crown carried over from Rosco's Purebred series, this barrel is designed to deliver improved harmonics along with excellent fit and finish.Product Highlights 16" 5.56 NATO barrel with intermediate-length gas system for reliable suppressed/unsuppressed function Continuous taper profile helps manage heat and improves front-end balance with modern attachments 416R stainless steel construction with durable nitride finish 1:7 twist rate optimized for a wide range of 5.56 projectile weights Threaded 1/2x28 muzzle and updated target crown for performance-focused buildsSpecs Brand Name: Rosco Manufacturing Manufacturer Part Number: K9-16-HY-556-7-I UPC: 850039693298 Caliber: 5.56x45mm NATO Barrel Length: 16 in Material: 416R Stainless Steel Finish: Nitride (Black) Barrel Profile: Continuous Taper Gas System Length: Intermediate Twist Rate: 1:7 Muzzle Threads: 1/2x28 Weight: 34.5 oz Country of Manufacture: USA Included: Intermediate-length gas tubeDisclaimer: 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 products manufacturer.