5 Simple Techniques For cmmg mk57

With several of the one of a kind projectiles I'd helpful — most notably the massive, fifty five grain subsonic rounds from Detroit Ammo Co (not pictured) — the bullet-formed grooves in the entrance on the FN journal didn’t Participate in properly.Each ProMags I utilised labored flawlessly, along with the manufacturing facility 5-seveN mag I'

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