David Dardick's bizarre pistol using triangular 'tround' cartridges in an open-chamber rotating mechanism that is neither revolver nor conventional semi-automatic. The unusual cartridge geometry allowed for a very high-capacity magazine. Type: Pistol Action: Semi-Automatic Caliber: .38 Dardick Tround Capacity: 15 Year introduced: 1959, USA Weight: 28 oz Overall length: 9.5" Status: Discontinued Intended use: Collecting