As to pointing a firearm, I believe that would fall under the heading of an assumed risk as the individual knew that the weapon was part of the production. An individual taking part in a re-enactment couldn't press charges against another if a firearm were pointed at them as part of the battle(i.e. he pointed his Brown Bess or Kentucky rifle at me as we were charging and I felt threatened), nor could a football player press charges against another for assault for what took place during play action unless there were some egregious action that really caused some damage. I don't even believe that there is a law against such things in film and theatre because the threat is an integral part of the action on stage, is under the direction of another, and is understood to be staged. Actor Brandon Lee's mother and fiance received a settlement from the studio producing The Crow, however, no criminal charges were filed despite the cause being found to be negligence.