P90

From the Metal Gear Wiki

[edit] Overview

Developed originally in the 1980's by Belgian firearms manufacturer Fabrique Nationale (FN), the P90 is intended for soldiers who cannot carry full-size light arms, such as aircraft crews and rear support units. The P90 is designed to provide enough firepower to pierce helmets and bulletproof armor at a range of 200 meters. The chamber is behind the pistol grip in bullpup style, but the cartridges are ejected downward, allowing it to be fired the same way by left- and right-handed users. Fires 5.7mm x 28 ammo. Holds 50 rounds.

[edit] Appearances

Better known as the FN P90, the gun was used by Solidus to execute Olga Gurlukovich and also part of the weaponry assigned to the Arsenal Tengu. Solidus, however had the bullets in his P90 modified to fire explosive rounds (which explains how he was able to pierce the armor of the Metal Gear RAYs and why his missing bullets exploded on the deck of Arsenal Gear as he was shooting at Ocelot).

The P90 also makes an appearance in Metal Gear Solid 4: Guns of the Patriots as a standard issue weapon for the FROG units. The lightweight build and compact size make the submachine gun the ideal choice for the agile units.