I was at the indoor range last wednesday and I saw something I have never seen, before; a fully automatic Thompson machine pistol with a 30 round magazine. It looked like an old one, but I am no expert. The dude was good too, he was squeezing of about 3 to 5 rounds per pull, based on how fast he emptied the mag and he made a nice pattern about 8 or 10 inches in diameter from 100 feet. I spent at least half my range time just watching him shoot.