The STI Perfect 10 is a double-stack 2011-format pistol chambered in 10mm Auto, built for handgun hunters and metallic silhouette competitors who need the extended range and terminal energy of the 10mm cartridge in a high-capacity format. Features a 6-inch barrel, adjustable rear sight, and a trigger tuned for the heavier bolt thrust of the 10mm. Type: Pistol Action: Semi-Automatic Caliber: 10mm Capacity: 15 Year introduced: 2008, USA Weight: 42 oz Overall length: 9.5" Status: Discontinued Intended use: Metallic Silhouette, Hunting, Competition