The Faxon Firearms DUTY BIG BORE 450 BUSHMASTER RIFLE BARREL offers a precise AR-15 compatible upgrade with a 16" Big Gunner contour, delivering steady performance for big-game and defense scenarios alike. This 16" carbine-length gas system barrel features a 1-16 twist and a black finish that blends seamlessly with standard AR-15 receivers, while the 11/16-24 muzzle threads accommodate a wide range of muzzle devices for improved recoil management and shooting ergonomics. Built around the robust 450 Bushmaster cartridge, the barrel weighs 1.72 lbs, providing a balanced feel and dependable reliability under demanding field conditions. Its AR-15 compatibility ensures easy installation and compatibility across a broad spectrum of platforms, making it an excellent choice for hunters seeking extended reach and enhanced terminal performance without sacrificing maneuverability. The 16" length optimizes balance and velocity for precise off-the-shelf operation, and the Big Gunner contour is designed to withstand repetitive firing and rugged use. Whether equipping a patrol rifle, a hunting rifle, or a versatile all-around AR-15 setup, this Faxon barrel delivers consistent accuracy, durable construction, and a proven platform-ready design for 450 Bushmaster performance.