The Rock Island TCM Rock is a double-stack 5-inch 1911-format 9mm pistol with a high-capacity magazine and modern features. Designed for competition and high-volume target shooting. Type: Semi-Auto Pistol Action: Single-Action Caliber: 9mm Capacity: 17 Year introduced: 2014, Philippines Weight: 33 oz Overall length: 8.7" Status: Active Intended use: Competition, Target, Training