The SIG MPX-P is a compact variant of the MPX platform designed for use with a pistol brace. Features a 3.5-inch barrel and the same short-stroke gas piston operation as the full MPX line. Ambidextrous AR-15 controls and proprietary MPX magazines. The most compact member of the MPX family. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 30 Year introduced: 2017, USA Weight: 60 oz Overall length: 15.5" Status: Active Intended use: Law Enforcement, Home Defense, Range