 who in the incident in question, he's pulling a six-shooter to try to defend himself. That's why the gun has to be safe before it gets into the actor's hands. His mind is somewhere else, in the being of another, a century away, an outlaw. He must be able to take that weapon and use it as the person he's acting would. To wave it, to point it, to pull the trigger like actors do, in ways that would be lethal in the real world, but are not lethal on a movie set.