NOT KNOWN FACTUAL STATEMENTS ABOUT CMMG MK57

If the bolt carrier moves forward, the bolt rotates and locks the lugs in front of the supporting lug abutments. When the group moves rearward, the cam pin forces the bolt to rotate and unlock with the barrel extension.The projectiles would stick or drag in there as well as the follower would bind. Because the ProMags don't have any inward-projecti