Suppressors and full auto weapons are legal in 31(?) states.
So, in those states, this is about a $200 tax stamp.
They will dress up, cosplay, kick in your door at 5am, kill your dogs, maybe even you and your family on what amounts to their coffee and donut bill at Crispy Creme on the way to your “fortified compound”.
A Full auto license and stamp or whatever is thousands of dollars, not simply a 200 dollar stamp and the Sherriff’s signature.