M93R Posted in M Best definition M93R Select fire, semi-automatic or 3-shot burst fire Beretta pistol. Used in Syphon Filter The Omega Strain. I just saw a guy get shot 5 times with a handgun. The cops caught him and reported the firearm to be a Beretta M93R How satisfied are you with the definition? Looking for M93R meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 32 times.