Colombo-Ricci revolverThe Colombo-Ricci Revolver was an automatic revolver of Italian origin, designed around 1910. The weapon was chambered in the 10.35mm Ordinanza Italiana round.DesignThe Colombo-Ricci revolver. is a blowback operated revolver that fires in semi auto, fed from a cylinder that rotates to the next round when fired ejecting the case much like an automatic firearm.