Gen 4 introduced the modular back strap system, dual recoil spring assembly, and RTF2 grip texture for improved control. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 17 Year introduced: 2010, Austria Weight: 25.06 oz Overall length: 7.32" Status: Active Military use: Yes Intended use: Service, Law Enforcement, Military, Competition