THE CMMG MK57 DIARIES

As CMMG designed a brand in part by supporting and innovating exclusive calibers inside the AR System, the addition of the 5.7x28mm Mk57 limited-barrel rifle below is probably going only the beginning.The projectiles would adhere or drag in there and the follower would bind. As the ProMags don't have any inward-projecting component and depart cons