STI Ranger II in 45 ACP. Commander-length single-stack 1911 carry pistol in the classic caliber. The 45 ACP Ranger II uses a 4-inch bull barrel and the STI standard trigger in the compact carry format. More popular than the 9mm variant in the US civilian market. Type: Pistol Action: Semi-Automatic Caliber: 45 ACP Capacity: 8 Year introduced: 2007, USA Weight: 34 oz Overall length: 7.5" Status: Discontinued Intended use: CCW, Duty Backup, Service