HOW CMMG MK57 CAN SAVE YOU TIME, STRESS, AND MONEY.

As CMMG built a brand partly by supporting and innovating one of a kind calibers while in the AR System, the addition in the 5.7x28mm Mk57 quick-barrel rifle listed here is likely only the start.The projectiles would stick or drag in there as well as follower would bind. Since the ProMags haven't any inward-projecting element and go away much more