Hmmm, most of the current bunch of M-11/9, MAC-10 type guns are pretty much all the same. They will all be closed-bolt, they won't be very accurate, and mags will cost more than you think. I have an F/A M-11/9 and it is a cool bullet hose, a semi-auto one will just be a big handgun. If you want to torture you buddies in CA., come out to one of our shoots. Ryan