The SIG Sauer MPX-K 9mm is a usa-made semi-automatic pistol chambered in 9mm Luger, introduced in 2015. Primary use: self_defense, sport. Type: Pistol Action: Semi-Automatic Caliber: 9mm Luger Capacity: 15 Year introduced: 2015, USA Weight: 26 oz Overall length: 7.4" Status: Active Intended use: self_defense, sport