This will be the last response on this topic, at least from me. Somebody hands you a weapon, although "modified" for the current situation and looks into your eyes and says, "all good bro". You do not ask any questions when a life is at stake? Don't answer....................that's for you to think about. Not me!
That is the responsibility of the prop dept and the prop manager on a movie set.....
Now if you are talking about when ur friend Joe Blow hands u a gun and says "all good" ....YEAH U CHECK THAT FOR SURE
I'll bet John WayNe AND Clint Eastwood did exactly what alec did....otherwise the movie would never get done with all the bullets they had flying around