CMMG MK57 - AN OVERVIEW

As CMMG crafted a brand in part by supporting and innovating exclusive calibers during the AR platform, the addition of the 5.7x28mm Mk57 limited-barrel rifle in this article is probably going only the start.The projectiles would adhere or drag in there as well as the follower would bind. Given that the ProMags don't have any inward-projecting sec