[24] Because the evacuator was positioned reduced to the gun's barrel US M68 guns were equipped with the eccentric bore evacuator rather than a concentric product as a way to supply a lot more clearance over the rear deck.[25] It had been initial referred towards the M60-2000 System and layout https://hoytmachineguns.com/product/new-in-box-factory-colt-m16a2-model-r0977-m4-carbine-safe-semi-auto/