I note with an Armourers eye for detail. That your Top rifle &Aussie) Has the hinge pin screw in the WRONG way round! This was Illegal stripping for users in the UK, & often accompanying inspections found the Proverbial Matchstick under the sear! Result, user was informed Armourer KNEW user had Illegally strippied his weapon & tampered with internal componant parts.
Result: A case of Beer for the Armourers Workshop, of face being charged in front of the company commander! I think you know which course of action the 'User' prefered!