HELPING THE OTHERS REALIZE THE ADVANTAGES OF CMMG MK57

Once the bolt provider moves ahead, the bolt rotates and locks the lugs before the supporting lug abutments. If the group moves rearward, the cam pin forces the bolt to rotate and unlock within the barrel extension.The projectiles would adhere or drag in there and the follower would bind. As being the ProMags have no inward-projecting aspect and go