This rests on the armorer and the person who hired the armorer which is not the actor unless the actor is also a producer who was involved in the hiring.
I may be by myself, but this was an accident that never should have happened thanks to the safety expert/armorer who was on set. No actor should ever be handed a loaded weapon on set. It's ridiculous that it even happened and everyone who has any knowledge of the industry knows it.
The actor can't be an actor, armorer, safety expert, scene specialist, director, etc. and it's unfair for a prosecutor to grab onto the most visible famous person for possible other reasons no matter how anyone feels about the man personally or professionally.
Don't know AB. Don't care to know him. But this is a waste of tax dollars for the people of NM in his case.
Charge the people actually responsible for safety on set alone. Sorry they don't merit the same amount of press for the prosecutor's office, but I believe the family of the victim has already dealt with AB directly themselves.