Involuntary manslaughter would be very hard to prove here. The charge is linked to criminal negligence which is a much higher bar to reach than civil negligence. You basically have to prove that Alec acted in a dangerously careless way. It's hard to say that in the process of filming a movie involving prop guns, that an accidental misfire killing someone was dangerously careless. Maybe in the scope of his duties as producer you can allege that he didn't ensure that safe prop guns were utilized but that would go more to wrongful death in a negligence lawsuit. And that goes for anyone on set the only way you can prove involuntary manslaughter on anyone's part is if someone knew that the prop gun posed a threat to kill someone and didn't replace it. And even then you're not entirely likely to secure a conviction. Civil liability is almost certain here. Criminal liability is unlikely.Yea you’re right, Baldwin will get off scott free because of his status but the normal joe would easily be seeing jail time. Involuntary manslaughter is a very real and serious charge.
I don't see criminal negligence here.