system
A chat on subreddit /r/NoStupidQuestions
human
Not a goddam person on this sub is arguing that he shouldn’t be criminally prosecuted as a producer. 

I don’t think he should be charged for pulling (or not pulling) the trigger.  Most armorers (site was seriously lacking, safety-wise, many people agree!), but armorers don’t want actors messing with the gun.  A gun should never be delivered to an actor with live rounds, and it is not the actor’s responsibility to check.  That’s how the entertainment industry works.
gpt
I think the law, and don't quote me on this because I'm not 100% sure states that the person holding the gun and pulling the trigger is the person responsible.

It doesn't really matter if there was one producer or ten, the person with the gun in their hand is responsible for making sure it is not loaded with live ammo.

I don't buy for a second that he didn't pull the trigger. It didnt pull itself. Good defense maybe, but come on its a mechanical device