P90's are cool, compact guns, meant for use in tight situations where a rifle would simply get in the way, but a pistol wouldn't pack enough punch. Wikipedia: The P90 is a Belgian designed submachine gun. The weapon’s name is an abbreviation of Project 90, which specifies a weapon system of the 1990s. The P90 is considered a Personal Defense Weapon (PDW), and was designed as a compact but powerful firearm for vehicle drivers, operators of crew-served weapons, support personnel, special forces and anti-terrorist units. Developed between 1986–1987 at Fabrique Nationale de Herstal, the P90 features a compact bullpup design,...