I don't know, but my Jennings has got to be the worst .22 out there. It needs at least CCI Stingers to operate somewhat properly, and still I doubt I can empty a mag with out some kind of feeding or extracting issue. Maybe it has a bad spring, since I bought it (new in the 80s) but either way I would not trust it beyond the first shot. With all the small frame guns out there, a .22 would be my last choice of pocket gun, even if it was just full of snake shot.