P90

The FN P90 ("Project 90") is a series of Belgian-designed automatic weapons. Described by some as submachine guns and others as a carbine, they debuted in the 1980s. In an unusual move, the weapon's manufacturer, FN Herstal, created an entirely new round for the weapon, the 5.7x28mm. The round is designed to defeat fabric armor and fragmentation helmets up to 100 meters away. It is fed from a horizontal, translucent 50-round magazine. The base of the magazine is toward the barrel. The cartridges sit at a right angle to the firing chamber are fed into a spiral feed ramp, where they are rotated 90 degrees. This unique feeding design allow a cyclic firing rate of 900 rounds per minute and also makes the weapon very compact. The spent casings are ejected through the bottom of the weapon, allowing ambidextrous use. The intent of the small form factor was to accomodate personnel not normally expected to take part in combat, e.g.: vehicle crews, artillery crews, and other support personnel. A pistol firing the same round, the FN Five-seveN, was manufactured as a supplement to the P90; the round is considered more effective when fired from the P90. The pistol does not appear in the game.

The P90 belongs to a unique class of firearm called the Personal Defense Weapon (PDW), a class of weapons whose design incorporates aspects of both submachine guns and carbines, and are essentially submachine guns chambered for intermediate cartridges.

Call of Duty 4: Modern Warfare
In singleplayer, the P90 is a rare weapon used only occasionally by Russian Ultranationalists on the later levels of the game. It can be found most commonly in Heat, All Ghillied Up, and Mile High Club but can also appear on very high levels of the game. Typically, the weapon is unsuppressed and uses iron sights.

In multiplayer, the P90 is unlocked at Level 40. It can be modified with a Red Dot Sight, ACOG Scope, or suppressor. The P90 has a 50 round magazine and a very high rate of fire. It is better than other SMGs at long range due to its low recoil and high rate of fire. In addition, it is also the slowest-killing SMG at extremely close range. At close range it kills slower than the Skorpion and Mini-Uzi, and has much better hip accuracy than the AK-74u if the AK has a red dot sight or silencer. There is often much debate about the P90 and the MP5. The MP5 has higher damage in close quarters combat and less obstructive iron sights. The P90 has a higher rate of fire, a bigger magazine, less recoil, and does the same damage in medium and long range combat. Because of these different advantages and disadvantages, most players consider the P90 superior if using a Silencer, but otherwise prefer the MP5.

In the PC version, having a P90 as a player's primary weapon greatly increases their sprint duration, unlike any other weapon in the game, thus giving the player a free Extreme Conditioning. Because of this, the P90 is the best weapon in the game in terms of mobility in the PC and Wii version (it has been patched on the other consoles).

Call of Duty: Modern Warfare 2
The P90 returns in Call of Duty: Modern Warfare 2 with a few changes: decreased recoil, a slightly lower rate of fire, smaller iron sights, and slightly better weapon detail. It is unlocked at the early level 24 in Multiplayer. The side rail mounts go completely unused, which may serve as evidence that the Heartbeat Sensor was originally going to be usable on SMGs. With its high rate of fire and sizeable magazine capacity, it's a good gun for groundpounding and rushing, but up to a point. The P90 is a threat at close range, but ineffective at distances unless fired in short, controlled bursts. The high magazine capacity and moderate damage output at close range makes this an intermediate weapon between submachine guns and light machine guns, particularly with the Extended Magazines option attached (Extended Mags increases the magazine size from 50 rounds to 75) making this a more mobile option than hauling around an LMG for close range fire support and covering fire.

The P90 is an effective Akimbo option, as each gun can fire for a considerable amount of time, and by firing each at a time, a player can keep a constant flow of bullets at a target. Akimbo also greatly reduces your accuracy stats, however as you can easily empty two magizines without killing your target.

Weapon Attachments

 * Rapid Fire (Marksman I)
 * Akimbo (Dual-Wield) (30 kills with Rapid Fire)
 * Red Dot Sight (Marksman II)
 * Holographic Sight (60 kills while aiming down sights with Red Dot Sight)
 * Silencer (Marksman III)
 * ACOG Scope (Marksman IV)
 * Thermal scope (20 kills while looking down ACOG Scope)
 * FMJ (Full Metal Jacket) (Marksman V)
 * Extended Magazines (40 kills with bullet penetration, while using FMJ)

Call of Duty: Modern Warfare: Mobilized
Call of Duty: Modern Warfare: Mobilized features the P90 as one of the four submachine guns available in game. In singleplayer, the P90 is used only by SAS and USMC. It is a starting weapon in "Oil Rig Confrontation", "Winter Assault", and "Last Chance". The weapon always has a Red Dot Sight, since it is actually integrated with the weapon. It has a slightly lower rate of fire than in the console versions, but has higher damage per bullet.

In multiplayer, the P90 is the second last weapon to be unlocked for the Coalition faction. The P90 has a 50 round magazine as well, but can only carry a maximum of 150 rounds of reserve ammunition. It is one of the best SMGs in the game at close range, as opposed to long range on the PC and consoles. Instead, it is the worst SMG at long ranges. This is due to the fact that the bullets will start to spread apart at further distances, despite the low recoil. Unlike the console versions, the MP5 is better than the P90 at range, due to the minimal bullet spread. However, the MP5 has a much longer reload animation than the P90, so there is still a debate between the two.

Trivia

 * The in-game model uses a strange way of holding the weapon, resting the front of the weapon in the character's left palm instead of the normal way of putting the left thumb through the weapon's frontal thumb hole (assuming a right-handed shooter). The way portrayed ingame, however, can be used to accommodate for knifing as the left hand is used for melees. Putting your thumb inside the frontal thumb hole may cause the left hand to get stuck, and therefore slow a person down.
 * The P90 has a flashlight that is unused, and the magazine always looks full to the player, (much like the G36C) despite the actual ammunition levels.
 * Despite the sprinting glitch being patched on other consoles, the Wii version of Modern Warfare still doubles the sprint time of players.
 * It has been likened to the PPSh-41, as both guns have a large magazine capacity and devastatingly high rate of fire.
 * The P90 version depicted in Call of Duty 4 and Modern Warfare 2 is the "TR" model with rails rather than an integrated sight, whereas Call of Duty: Modern Warfare: Mobilized depicts the standard version, with the integrated Red Dot Sight.
 * In Modern Warfare 2, the side of the magazine on the P90 says "Made By Infinity CC".
 * The P90 is the first Bullpup weapon to be featured in any Call Of Duty Game.
 * In Exodus, when turning on your laser it will come out of the gun's barrel, rather than the laser on the side of the gun.
 * The P90 was rated as "Number 5" on the Military Channel's Top Ten CQB Weapons.
 * In Call of Duty 4: Modern Warfare, there is also a suppressed version using a C-More Tactical-type red dot sight instead of iron sights, called the "P90 SD" found in All Ghillied Up, specifically, on the body of the enemy soldier Cpt. MacMillan says "Oi, Suzy!" to and the majority of the rest of the Russian troops.