Nowata firearms has them. Good place. They've got an 18c, also. We shot the suppressed MP5 there. Pretty much all the places that do full-auto they make you buy ammo at their range, I think, which is where the cost skyrockets. I know at 2A, they even make you buy their for non-full-auto stuff. Tried to rent a Walther P22 for my boy there last time and they had no ammo, even though I had tons of factory ammo, they wouldn't let us.
