Let's suppose that you are an executive producer, of a movie. Let's suppose that it is a western, where they will use lots of revolvers.
Now, I'll admit, I've been in the bourbon, but it seems to me that if you're rehearsing with a revolver, it makes sense to remove the cylinder. A revolver without a cylinder is simply a paper weight. It still works like a revolver. With the base pin installed, it can be cocked and fired, but the only way that an actor can hurt someone is if you smack them with the barrel.
So, the question is: Why did I have to think of this?
I am available to be the safety guru on movie sets. For the proper amount of recompense.