The TM1C is Auto-Ordnance's compact pistol version of the Thompson, with a 10.5-inch barrel — classified as a pistol under federal law. Delivers the Thompson aesthetics without the 16.5-inch barrel requirement of the rifle variant. Type: Pistol Action: Semi-Auto Caliber: .45 ACP Capacity: 20 Year introduced: 2008, USA Weight: 102.4 oz Overall length: 26.5" Status: Active Intended use: Collecting, Plinking