THE KNIGHTS ARMAMENT SR-15 CQB 11.5 UPPER DIARIES

Knight’s Armament employs a hammer-forging process on quite a few our barrels and chambers, which serves to improve the standard of their interior finish, and also escalating the sturdiness and life of the barrel.* These hold the conventional black e3 bolt and upper receiver as pictured.  Based on Knight's the updated Edition of this upper won't