Bushing has been fitted. last 1/16 turn to lock it is snug. Yet that will be ok, positive lock up plus with time it will loosen up some.
Barrel sticks out, thats because shroud on barrel is now needing to be fitted for width to slide, then shroud length will have to be adjusted for barrel going into battery(lock-up). Width first, then slowly do shroud length, while checking lock lugs on barrel to slide lug recess points.