The guy is not breaking any laws and is on his property! This is not being nuts this is a citizen using his freedom! The issue is NOT with this man but those who attack/ insult him for using his rights while they hide in the shadows so nobody see's them using theirs.
Both subs and supersonic depending on what you want to do. These are 220 subs they run great in a semi ( or full auto ) you can get them with a little less powder for bolt guns but truth be told these are mouse fart quiet out my Remingtom 700 300aac with a can.
I have several USP's because they are tanks. I have a USP .45 that I have had going on 14 years and have used it allot had many thousands of rounds through it more then half of those suppressed and still runs like a champ.