Pretty interesting update to the story... Just now came across this.
https://bearingarms.com/bob-o/2017/01/25/hero-saved-arizona-trooper-felon-restored-gun-rights/
I'm strangely okay with this...The Second Amendment as written does not bar Felons from bearing arms.
While imprisoned, it does make sense to deny them knives, guns, and forks.
When released, they must be restored all their natural rights, unless they fall back into debauchery.
At that time, they forfeit their lives for bad behavior. Hang them high, loud, and proud.
Be well.