FN P90 is a bullpup PDW developed for NATO in response to a requirement for a compact weapon defeating body armor. Select-fire with 50-round horizontal top-loading magazine. Used by Secret Service, SWAT teams, and over 40 national militaries. Type: Submachine Gun Action: Gas-Operated Caliber: 5.7x28mm Capacity: 50 Year introduced: 1991, Belgium Weight: 256 oz Overall length: 40.75" Status: Active Military use: Yes Intended use: military, law_enforcement