On my AA Pro Sport, I've noticed that the stop pin for scope mounts can be screwed down far enough to lock against the trigger housing. I don't know if you're supposed to do that but I don't like it. It causes you to have to remove the scope to remove the trigger housing so the gun can be disassembled.
I loctite my pin and screw it in just shy of contacting the trigger housing.
I loctite my pin and screw it in just shy of contacting the trigger housing.