A P90 or P90c is a name given to sub-compact submachine guns in the Fallout universe. They boast high damage, low weight, and a helicial feed system that allow them to carry a startling amount of ammunition. While they have an odd appearance, they are the favorite submachine guns of many late-game factions.
The Heckler & Koch P90c was just coming into use at the time of the war. The weapon's bullpup layout and compact design make it easy to control. The durable P90c is prized for its reliability, and high firepower in a ruggedly-compact package.
The FN P90c was designed by the FN Herstal and just coming into use at the time of the war. The weapon's bullpup layout, and compact design, make it easy to control. The durable P90c is prized for its reliability and high firepower in a ruggedly-compact package.
The real-world P90 is produced by FN Herstal, and doesn't have a 'c' designation in the line. They're also chambered for the new 5.7x28mm armor-piercing round instead of 9 or 10mm rounds. Another difference is their magazine: where the game states they have a helical feed, in reality they have a horizontally mounted feed with the magazine fitting flush with the top of the receiver, perpendicular to the barrel.