With a few of the special projectiles I had useful — most notably the massive, 55 grain subsonic rounds from Detroit Ammo Co (not pictured) — the bullet-shaped grooves while in the front on the FN magazine didn’t play properly. The projectiles would stick or drag in there and https://cmmgmk5764051.blogmazing.com/30210127/helping-the-others-realize-the-advantages-of-cmmg-mk57