HELPING THE OTHERS REALIZE THE ADVANTAGES OF CMMG MK57

With a few of the exceptional projectiles I'd handy — most notably the big, fifty five grain subsonic rounds from Detroit Ammo Co (not pictured) — the bullet-formed grooves while in the entrance with the FN journal didn’t Participate in nicely.The projectiles would stick or drag in there plus the follower would bind. Since the ProMags haven't