[24] Because the evacuator was positioned reduce within the gun's barrel US M68 guns have been fitted by having an eccentric bore evacuator as an alternative to a concentric design in order to provide much more clearance around the rear deck.[25] The barrel latch mechanism (a swinging lever) could capture https://hoytmachineguns.com/product/new-in-box-factory-colt-m16a2-model-r0977-m4-carbine-safe-semi-auto/