The original STI 2011 chambered in 40 S&W is where the double-stack 2011 concept proved itself in USPSA Limited Major competition. Major power factor scoring rewarded the heavier projectile, and the 2011 frame's wider magazine tunnel accommodated the fatter 40-caliber rounds without a significant capacity penalty. Much of Staccato's competition DNA traces directly to what this gun established on the Limited stage. Type: Pistol Action: Semi-Automatic Caliber: .40 S&W Capacity: 18 Year introduced: 2005, USA Weight: 38.5 oz Overall length: 8.75" Status: Active Intended use: Competition