Harry Angstrom
Striker
It is still a prop. I think it would be fair to assume a gun used on stage in a theatre is not loaded.*Gun. He had a gun.
A car used on set is a prop car. You don't stomp on the throttle without checking if it's in gear when someone is in front of you.
In hindsight, he probably shouldn't have been pointing the thing at anyone, never mind pulling the trigger. Someone on set was negligent.