I've had "Beretta bite" before... also had a pinkie trapped in the chamber of an M-4 doing a "visual and physical" inspection of the chamber to make sure it wasn't loaded... somehow the bolt release got bumped; that was the worst because the natural reaction was to try to rapidly pull the finger out; ended up with an M-4 flailing about on the end of my finger for about 3 seconds before I realized what had happened and got control of myself.