Glock Switches. The new toy of choice.
Virtually uncontrollable, its just a military spray and pray thing. I think the cyclical rate is 1200rpm and you have a 33 round mag so you do the math. Not even fun to shoot because its like "oK that was a millisecond of fun what did I hit, here is your $50 for the box of ammo" .
Glock switches are, at this time, a Federal NFA violation. The mere possession is 20 years in the can.
Very intimidating but if you are under cover, wait a second till he runs out of ammo (most of which will be launched in the air) and then pop the perp with your 38