Do you feel lucky? The Umarex 8-3/8” Smith & Wesson .44 Magnum "Dirty Harry" Co2 revolver is a Co2 airsoft revolver that has everything you could want in an airsoft revolver. This Umarex M29 airsoft revolver is Co2 powered and functions similarly to a real revolver. This S&W revolver looks and feels just like the one used in the iconic Dirty Harry movies, and comes with six silver, polished cartridges. The cylinder holds six cartridges, and each cartridge holds one 6mm airsoft BB. The Co2 revolver can be fired in double or single action, meaning that the hammer can either be cocked back before each shot or the trigger can be used to cock the hammer and fire. We recommend our Valken 12g Co2 Cartridges for use with this Umarex airsoft pistol.