A SIMPLE KEY FOR CMMG MK57 UNVEILED

With many of the special projectiles I'd handy — most notably the big, fifty five grain subsonic rounds from Detroit Ammo Co (not pictured) — the bullet-shaped grooves from the entrance in the FN journal didn’t Perform properly.Both equally ProMags I made use of labored flawlessly, and also the factory Five-seveN mag I had did not. I’ll adm