USAS-12

The Daewoo Precision Industries USAS-12 is a modern Korean-made, automatic, 12-gauge shotgun developed by Daewoo Precision Industries.

Battlefield: Bad Company
In Battlefield: Bad Company, the USAS12 is obtained by completing a certain "Find-All-Five" challenge. One must simply check their stats online (see External Links) and it will be unlocked the next time the player signs in. Or you can enter the code aw3somefirep0wer.

Only accessible through multiplayer, it is issued to the Demolition class. It is the only automatic shotgun, but it is balanced out by a lower rate of fire. It is capable of killing within 3 or so shots. Its main downsides come from its somewhat low magazine size (10 shells) and fairly uncontrollable recoil.

Battlefield: Bad Company 2
In Battlefield: Bad Company 2s singleplayer, the USAS-12 Auto' uses a 12 round magazine. It retains its fully-automatic fire mode, and is found as a collectible in Snowblind, but has several appearances throughout the singleplayer mode, such as when it is used by Russian forces in Sangre del Toro, and given to the player character in Airborne. The USAS-12 with 12 Gauge Slugs can be found in a opened ship container just before some stairs at the beginning of the level Crack the Sky. Both versions of the gun are collectibles.

In multiplayer, the USAS-12 Auto is the last shotgun issued to all kits, unlocked at rank 21. It is fully automatic and has a 6 round magazine. The USAS-12 has almost exactly the same weapon stats as the Saiga 20K except for it being automatic. With 12 Gauge Slugs, it can be used as a sort of burst-fire assault rifle, although it suffers from a small magazine, a low rate of fire, and high recoil, as well as a steep increase in spread per shot. It is a very good idea to apply the Extended Shotgun Magazine specialization to the USAS-12, as it doubles its capacity to a total of 12 shells per magazine and greatly increases its potential to take on multiple targets.

USAS-12
In Battlefield Play4Free, the USAS-12 makes another appearance. It retains its fully-automatic firemode, but gains the ability to use ironsights. It also comes with a 10-round-magazine as opposed to a 6-round magazine. It is available for every class at the cost of 500 per day or 320  for unlimited use.

Veteran's USAS-12
The Veteran's USAS-12 features a higer damage over the standard USAS-12 and a larger magazine of 12 rounds. The cost for unlimited use is 630. The gun's appearance is rugged, but the differences with the standard USAS are very small, unlike other Veteran's guns.

Elite's USAS-12
The Elite's USAS-12 does even more damage per pellet than the Veteran's version and has a larger magazine of 14 rounds to further increase its usefulness. The cost of this gun is 790 for unlimited use or 3000  per day. The weapon has a very clean appearance, like all of the elite weapons, and sports a tan paint scheme on the stock, pistol grip and handguard.

This gun is very similiar to the Saiga-12, being equal or superior in every aspect: both have the same damage and magazine capacity, but the USAS has a higer rate of fire, being fully automatic, costs less Battlefunds and can be temporary bought with in-game credits.

Singleplayer
The USAS-12 can be found in the mission Kaffarov with various optical attachments.

Multiplayer
The multiplayer USAS-12 is an all-kit weapon, with a fully-automatic firemode and the same attachment selection as the other shotguns. It is unlocked at rank 43, and is magazine fed.

There have been complaints from the community stating that "When equiped with Frag rounds, the USAS 12 becomes over powered because you can practically turns it into a fully automatic sniper with exploding bullets". DICE has said on their Twitter that they will be addressing this in an upcoming patch.

Trivia

 * In the description for the USAS-12 in Battlefield: Bad Company, it is falsely stated that the gun is illegal for US civilians to own. [The semi-auto variant of the USAS-12 is explicitly classified as a Destructive Device by the ATF under the National Firearms Act of 1934.] However, one can be bought with proper registration and tax stamps.
 * In multiplayer of Battlefield: Bad Company 2 on the PC, the USAS-12 had crosshairs instead of the usual circle crosshair that the other shotguns have. This has been patched.
 * In Battlefied 3, The USAS-12's proficiency dog tag has a picture of a SPAS-12 on it instead of the USAS.

Videos
thumb|300px|left|Gameplay with the USAS-12 Auto in Battlefield: Bad Company 2 at [[Arica Harbor and White Pass in Squad Deathmatch mode]]