Enhance your AR15 build with the CMMG 16.1" .350 Legend Nitride Barrel crafted for precision and reliability. This barrel features a carbine length and medium taper profile perfectly balancing performance and weight. Constructed from rugged 4140CM steel and finished with nitride it offers exceptional durability and resistance to wear. The M4 barrel extension is expertly installed ensuring seamless integration with CMMG's Mk4 AR15 uppers. With a 1:16 twist rate this barrel is optimized for accuracy making it an ideal choice for any custom AR15 upper assembly.