The SIG P320 is a striker-fired modular pistol with a serialized fire control unit (FCU) that can move between frames. Selected as the US Army M17 in 2017, replacing the M9. The modular FCU system allows configuration changes without gunsmithing. Type: Semi-Auto Pistol Action: SA Caliber: 9mm Capacity: 17 Year introduced: 2014, Germany Weight: 25.8 oz Overall length: 8" Status: Active Military use: Yes Intended use: Military, Law Enforcement, Service