Ruger AR-556 MPR Semi Automatic Rifle 450 Bushmaster 18.63" Matte Threaded Barrel Black Frame Black Pistol Grip

The Ruger AR-556 MPR rifle is a gas impingement driven, box magazine fed, autoloading rifle. The mechanism utilizes the gas from the firing of the round to drive the bolt carrier rearward and rotate a bolt that locks into the barrel. The AR-556 rifle can be field stripped without the use of tools and breaks down into basic subassemblies. The safety, located above the trigger on the left side of the lower receiver, blocks the trigger and permits the bolt carrier to be cycled with the safety in th