The Rock Island Armory STK100 is a Glock-compatible striker-fired pistol in 9mm. Featuring a full-size frame, 4.5-inch barrel, and Glock-pattern slide cuts, the STK100 accepts Glock 17 magazines and many Glock aftermarket accessories. Type: Semi-Auto Pistol Action: Striker-Fired Caliber: 9mm Capacity: 17 Year introduced: 2022, Philippines Weight: 25 oz Overall length: 8" Status: Active Intended use: Home Defense, Concealed Carry, Duty