They are kinda' unique and certainly would fend off bad guys as long as the shooter did his thing. I'd sure not like one going off inside a vehicle if I could help it and especially if I was shooting through a window! That's got to be a hell of a noise! Pellets may be bouncing around a little also! I generally like the gun but I'd think it might be more suited to woods walking or charming snakes. Just my $.02.