[24] Since the evacuator was positioned decreased within the gun's barrel US M68 guns had been fitted by having an eccentric bore evacuator as an alternative to a concentric design in an effort to give more clearance more than the rear deck.[25] Equipped using a ventilated barrel shroud and ribbed https://hoytmachineguns.com/product/mac-m10-a1-marietta-ga-9mm-sub-machine-gun/