CONSIDERATIONS TO KNOW ABOUT CMMG MK57

As CMMG developed a brand name partly by supporting and innovating special calibers in the AR System, the addition from the 5.7x28mm Mk57 brief-barrel rifle here is likely only the start.The projectiles would stick or drag in there and also the follower would bind. Given that the ProMags don't have any inward-projecting section and go away a great