“How does a “prop” gun kill someone?”
When it’s loaded incorrectly:
1. Wrong charge for the caliber. Too heavy or light.
2. Shrapnel of some kind that is expelled from the barrel.
3. Concussive force causes injury.
That’s just off the top of my head.
There will be so many lawsuits coming out of this that lawyers in every corner are salivating. From the prop master to the production company, to Baldwin, to the manufacturer. This is going to get really ugly.
You forgot one scenario - they put a live round in the chamber instead of a blank.
https://nypost.com/2021/10/22/prop-gun-used-by-alec-baldwin-in-shooting-contained-live-round-union/
Not to mention, the deceased husband is an attorney.