FN P90


Caliber: 5.7x28mm SS190
Weight: 2.54 kg empty; 3 kg loaded with magazine with 50
rounds
Lenght: 500 mm
Barrel lenght: 263 mm
Rate of fire: 900 rounds per minute
Magazine capacity: 50 rounds
Effective range: 200 meters
The FN P90 submachine gun (SMG) was developed in the late 1980s as
a defensive weapon for the troops whose primary activities does not
include small arms - vehicle and tank crew members, artillery crews
etc. Standart pistols and SMGs chambered for pistol rounds were
proved ineffective against enemy soldiers, wearing armour
(bulletproof) vests, so FN Herstal developed a new round with
enhanced penetration - the SS190. This round looks like scaled
downt 5.56mm NATO round and forces the pointed, steel core bullet
to the 600-700 meters per second at the muzzle, thus being capable
to defeat standart CRISAT helmets and armour vests at reasonable
distances (50-100 meters).
The P90 is a blowback operated, selective fire weapon. It is fed
from 50-rounds box magazines, made from transluscent polymer. The
magazine is being located above the barrel, with the cartridges
being aligned at 90 degrees to the barrel axis. Each magazine has
built-in ramp that rotates cartridge to align it with the barrel
prior to chambering it.
The P90 controls are completely ambidextrous, with charging handles
located at the both sides of the weapon, and the safety/fire mode
selector is located below the trigger. The P90 also features
downward ejection of the spent cases. P90 is built in bull-pup
configuration, with polymer stock, and features built-in reflex
collimator sight with 1X magnification and reticle automaticaly
ajustable to the light level, as well as a set of the backup open
sights. P90 may be equipped with special silencer, that should be
used with special, sub-sonic variant of the 5.7x28mm
cartridge.
P90 may be referred as a forerunner of the PDW (Personal Defence
Weapon) concept, that arose in last 4 or 5 years.
P90 is used by Saudi Arabia, Peruan Special Forces and some special
units of Thailand army, and offered for export by FN.