FN P90
Country of origin



FN Herstal


Fabrique Nationale

Production began


Weapon type





Straight blowback, closed bolt

Overall length

500 millimeters (19.7 in)

Barrel length

263 millimeters (10.3543 in)

Weight empty

2.5 kilograms (5.1156 pounds)

Magazine/Cylinder capacity

50 rounds

Cyclic rate

900 rounds per minute

Maximum effective range

200 meters (656.168 feet) maximum effective range, 5,905 feet (1,800m) maximum

Muzzle velocity

715 m/s (2,350 ft/s)

The FN P90, more commonly known as simply the P90, is a compact, bullpup, select-fire PDW (personal defense weapon) designed and manufactured by Fabrique Nationale.


The P90 was developed between 1986-1990 by Belgian company FN Herstal and first saw use in the Gulf War by the Belgian Special Forces Group.

The P90 was designed to replace submachine guns that used pistol caliber rounds for military and law enforcement agencies, as these cartridges were deemed insufficient against body armor.

Further development has led to the creation of the P90 TR variant. This variant was introduced in 1999 and continues to be offered alongside the standard P90.

Design detailsEdit

The P90 is a short, compact, lightweight bullpup weapon, chambered in 5.7x28mm. It takes a 50-round magazine; the magazine feeds from the top, and the weapon fires from a closed bolt. The P90 has a 10.5 inch barrel, with a flash hider mounted. It uses the straight blowback mode of operation, and the weapon cycles at a rate of 900 rounds per minute. All models of the P90 can take suppressors.

The P90's receiver is polymer, and can come in a few different colors - olive drab and black being the most prevalent.


The P90 has a few variants.

FN PS90Edit


An FN PS90

This civilian variant is basically the same as the P90; however, it has a 16-inch barrel, and the option of automatic fire is removed.

The early generation PS90 SMGs have a trigger group with the auto sear included. These trigger groups will have a front sear and a rear sear. To make the gun fire fully automatic, you simply remove the rear sear spring shaft from the detent and lay the shaft on the cam beside the detent. This removes pressure on the rear sear and will result in the PS90 firing fully automatic. In the USA, if you remove the spring shaft from the detent and insert the trigger pack into a PS90, you will have made a machinegun according to U.S. federal law, and if caught, you will be prosecuted by either state or federal authorities.

FN P90 LVEdit


an FN P90 LV

P90 with an integral laser mounted in front of the trigger guard, just below the barrel. This laser can either be visible or infrared; infrared lasers are for use at night, in conjunction with night vision equipment (as that is the only way the light can be seen).

The regular laser has three settings: off, low power, and full power.

FN P90 TREdit

This P90 features a rail on top of the receiver, and two rail sections on the sides of the receiver. The top rail is integral.



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