DETAILED NOTES ON CMMG MK57

With several of the special projectiles I'd handy — most notably the massive, fifty five grain subsonic rounds from Detroit Ammo Co (not pictured) — the bullet-shaped grooves during the front in the FN magazine didn’t Enjoy properly.Absent with the bolt carrier group (BCG) is a fuel essential, which is generally found on DI-­style, AR-­patt