Individual Officer Model Five-seveN. Original single-action variant marketed to military officers. 5.7x28mm high-velocity round. Type: Pistol Action: Semi-Automatic Caliber: 5.7x28mm Capacity: 10 Year introduced: 1998, Belgium Weight: 22.9 oz Overall length: 8.2" Status: Discontinued Military use: Yes Intended use: Military / Defense, Law Enforcement