The KRISS Vector SDP is the pistol-classified version of the Vector carbine, featuring the unique KRISS Super V recoil mitigation system that redirects bolt travel downward to reduce muzzle rise. Type: Pistol Action: Gas-Operated Caliber: 9mm Capacity: 17 Year introduced: 2016, USA Weight: 5.9 oz Overall length: 18.7" Status: Active Intended use: Home Defense, Tactical, Collector