DETAILS, FICTION AND CMMG MK57

As CMMG built a brand partially by supporting and innovating one of a kind calibers from the AR platform, the addition on the 5.7x28mm Mk57 shorter-barrel rifle below is likely only the beginning.The projectiles would stick or drag in there and also the follower would bind. As the ProMags don't have any inward-projecting section and go away consid