THE 2-MINUTE RULE FOR CMMG MK57

As CMMG constructed a manufacturer in part by supporting and innovating unique calibers from the AR System, the addition of the 5.7x28mm Mk57 small-barrel rifle here is likely only the beginning.The projectiles would adhere or drag in there as well as the follower would bind. Since the ProMags haven't any inward-projecting element and depart much