The Five-seveN IOM (Individual Officer Model) is the original production variant of the Five-seveN, featuring a manual safety mounted on the frame and a single-action-only trigger. The IOM designation indicated it was issued to officers (rather than as a crew-served PDW) within FN's original 5.7x28mm system marketing. Superceded by the USG and MK2 variants. Type: Pistol Action: Semi-Automatic Caliber: 5.7x28mm Capacity: 20 Year introduced: 1998, Belgium Weight: 22.9 oz Overall length: 8.2" Status: Discontinued Military use: Yes Intended use: military, law_enforcement, collector, special_operations