Tanfoglio STOCK I in 45 ACP. A full-size steel competition pistol for Open or Standard division shooters preferring the 45 ACP cartridge. The larger frame accommodates the wider magazine body and the action is tuned for the lower-pressure 45 ACP round. Type: Pistol Action: Semi-Automatic Caliber: 45 ACP Capacity: 10 Year introduced: 2005, Italy Weight: 42 oz Overall length: 8.5" Status: Active Intended use: IPSC Standard, Competition