I ended up giving him his guns back do to no room to hide them from him. I gave him one last warning not to shot his sister or I would give them to a charity. No sooner than I said that then my daughter picked up one of his guns and shot him in the face. I laughed my head off, but now I get, "How come I can't shoot her but she can shoot me," all the time. So the rule is pretty much out the door. Last night we played a round and I used her as a shield just to mess with him.