The most powerful semi-automatic pistol of its era, designed by Hugh Gabbet-Fairfax and produced briefly by Webley & Scott. The Mars fired a proprietary cartridge generating enormous energy but was impractical for military use due to its violence of operation. Type: Pistol Action: Semi-Automatic Caliber: .45 Mars Capacity: 8 Year introduced: 1901, United Kingdom Weight: 48 oz Overall length: 12" Status: Discontinued Intended use: Collecting