When they were new, the NRA tested several of them. They were found to b e really "fun" little guns, but the NRA testers didn't consider them reliable enough for law enforcement.
Just something to keep in mind before spending a lot of money on one.
And I looked, and behold a pale horse: and his name that sat on him was Death, and Hell followed with him. And power was given unto them over the fourth part of the earth, to kill with sword, and with hunger, and with death, and with the beasts of the earth.