The guns were legally registered in his mother's name:
-In CT, you can't possess a handgun under the age of 21.
He was 20.
-You must complete a handgun safety course, give fingerprints and have your background to obtain a firearm in your name.
He didn't. He stole them all from his mom.

His mom, a responsible gun owner, had her guns stolen by a psycho who clearly didn't give a rats a$$ about laws of any kind, let alone small petty ones like that.

I don't understand what you anti-gun people think stricter gun laws or bans are going to do, I really don't. They are called criminals for a reason, I don't get what you think a few laws are going to do. That really makes no sense to me, whatsoever.