Submachine Gun

The Uzi submachine gun (or SMG) deals light progressive damage. It holds 50 rounds with 480 in reserve, and has enough accuracy to shoot at medium range. Although it is replaced by the assault rifle in tier 2, it still has the highest rate of fire. It also has noticeable stopping power. The main drawback to the submachine gun is the high rate of ammo expenditure; most Survivors using a submachine gun will run out of ammo partially through a level if they aren't conservative with their shooting. However, it is great for medium-ranged closed-quarters such as large warehouses and apartments. Its high rate of fire and penetration make it a ranged alternative to the short-ranged shotgun.

Tactics



 * Fire in small bursts. This keeps accuracy up and prevents you from shooting zombies when they're already dying.
 * Move forward, crouch, shoot, move forward again. This makes for better accuracy and an opportunity for your team to shoot over your head if an Infected comes into your blind spot.
 * Learn when not to shoot. Your ammo needs conservation because of its high rate of fire. Let someone with a shotgun take point and use your bullets to cover him.
 * When shooting, aim for your target's feet and move up the Infected's body. The Infected slows down from the leg damage and eventually gets headshot.
 * This strategy also limits friendly fire.
 * The submachine gun can shoot through damaged doors without risking further damage.
 * When an Infected attacks you, your accuracy drops. When you need to make a shot (i.e. to save a friend who's being strangled) you will need to knock the Infected off you first.
 * The accuracy of the submachine gun lets it hit enemies at a greater distance.
 * Save pounced or snared teammates at long range by shooting the Hunter, the Smoker, or the tongue.
 * Take out long range threats before the rest of the team pushes on.
 * Reload often. The high rate of fire on the submachine gun means that the 50 round magazine will run dry fairly quickly. The last thing your team needs is one less gun during a panic event.
 * One advantage the submachine gun has over its bigger brother, the assault rifle, is its higher ammo capacity and higher rate of fire. This is particularly useful to more easily decimate a hallway of Infected, while the assault rifle is best shooting at longer ranges than in corridors. One player can use the Uzi while the other with the assault rifle can conserve ammunition in close quarter hordes.
 * Having ammo over 50/999+? When you start the chapter ( Any Level ), try not to shoot your weapons, but instead, grab the Uzi or the Pump Shotgun, and keep on dying to have more ammo. Example: Getting yourself a Uzi, and next, you die from zombies, or falling too high. When you respawn, you will have 50/530 ammo for the Uzi, or 8/136 ammo for the Pump Shotgun, the ammo will go to 999-1999 and will keep going forever if you keep dying, it will not matter if it's a Co-op or a Single Mode. This is a good tactic for Uzi or a Pump Shotgun for beginning levels of Chapters. ( Note: This will not work for Tier 2 Weapons! )

Left 4 Dead 2
In Left 4 Dead 2, the new SMG appears to be a suppressed MAC-10 SMG. The suppressor appears to have no effect on the Infected, as they can still be seen running towards the players while he is firing at other enemies. The MAC-10 has a 48-round magazine, compared to the Uzi's 50-round one. It also has a new reloading animation, as seen in this video. It has been renamed "Silenced SubMachine Gun".

Behind the Scenes
Originally, the SMG's flashlight was mounted directly under its handguard. In the final version, the flashlight is mounted on the right side of the gun.

The SMG is based on Counter-Strike ' s MP5N submachine gun. Its "price" in the gun's weapon file is the same as the MP5's, and it references the MP5 in its "animation" listing. A scoped version can be also seen in the Crash Course poster.

Trivia

 * The ammo count is 480, hinting that the Uzi may have originally used its real life capacity of 32 rounds.
 * Left 4 Dead's Uzi has a much higher rate of fire than the actual Uzi, resembling the Micro Uzi variant.
 * Occasionally when Louis picks up the Uzi, he states "Oh, MAN! This is just like Counter-Strike!"