NOT KNOWN FACTS ABOUT CMMG MK57

As CMMG constructed a brand partially by supporting and innovating exceptional calibers inside the AR System, the addition of the 5.7x28mm Mk57 limited-barrel rifle here is likely only the start.The projectiles would stick or drag in there and the follower would bind. Given that the ProMags don't have any inward-projecting part and go away far mor