Tough talk. Can you walk the walk? It is only dead men that can't sue you out existence. And intentional maiming, is under the category called Mayhem. An enhanced sentence for that. You break it, you own it, in this country. Who know what story the jury would buy?
OTH, I have confronted someone recently with a shotgun....about a year ago. It wasn't at my house. 2 guys drunk, pounding on the door. They wouldn't go away and said they were going to bash in the door and proceeded to do that. SHIT! Too late to call the law.
So, I took the shotgun and stood a bit back from the door. I had my friend swing it wide open for them to see me. I stepped forward but didn't raise the gun. I had it pointing down and out. Casual, holding it one hand. I said LEAVE.
No, blah blah, owes us money...you won't shoot us.
I just motioned slightly with the barrel, and said, "No but this thing could go off, accidentally." The muzzle is about 2 feet from his left ankle. Ugly picture. Long stare, long eye contact. They backed up. They left.