CMMG MK57 FUNDAMENTALS EXPLAINED

As CMMG built a brand name in part by supporting and innovating exclusive calibers in the AR platform, the addition in the five.7x28mm Mk57 short-barrel rifle below is probably going only the beginning.The projectiles would adhere or drag in there as well as the follower would bind. As being the ProMags haven't any inward-projecting element and de