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

As CMMG designed a model partly by supporting and innovating distinctive calibers inside the AR platform, the addition with the 5.7x28mm Mk57 small-barrel rifle right here is probably going only the start.The projectiles would adhere or drag in there and the follower would bind. Since the ProMags haven't any inward-projecting element and go away f