With a lot of the distinctive projectiles I'd helpful — most notably the big, fifty five grain subsonic rounds from Detroit Ammo Co (not pictured) — the bullet-shaped grooves while in the entrance in the FN journal didn’t Engage in nicely. The rotating bolt allows strain in the barrel https://reidwcetm.designertoblog.com/62183774/the-smart-trick-of-cmmg-mk57-that-nobody-is-discussing