The P320 X-Five Full Size is the original X-Five competition variant, featuring a 5-inch bull barrel, optic-ready slide, tungsten-weighted full-size grip module, and a flat trigger. It preceded the X5 Legion and served as SIG's entry into the dedicated competition striker-fired market, competing with the Glock 34 and CZ Shadow 2 in USPSA and IDPA competition. Type: Semi-Automatic Pistol Action: Striker-Fired Caliber: 9mm Luger Capacity: 21 Year introduced: 2017, USA Weight: 43.5 oz Overall length: 8.5" Status: Active Intended use: competition