Ultra-compact pistol MPX with a 4.5-inch barrel and PDW brace, offering maximum portability in the MPX piston-driven 9mm platform. Type: Rifle Action: Semi-Automatic Caliber: 9mm Capacity: 20 Year introduced: 2019, USA Weight: 4.5 oz Overall length: 14.5" Status: Active Military use: Yes Intended use: CQB, PDW, Tactical, Military