Effective to 2500 meters, this .408 Cheytac Noreen BN408 is a piston driven, side-charging, semi-automatic rifle which features a black nitride 28" barrel with 1:13" twist, adjustable AR15 collapsible stock, A2 pistol grip, 10 round magazine, match trigger, bipod, Noreen muzzle brake, nickel boron coating internal finish, and a black oxide external finish.