Assault Carbine

The assault carbine is a weapon in Fallout: New Vegas.

Characteristics
The assault carbine sports a very compact size compared to the R91, which was the United States' primary combat rifle. The assault carbine can be equipped with an extended magazine which is identical to that used on the regular marksman carbine, except that it has a black rather than aluminum finish. It has a high rate of fire and a moderate spread, best employed at close to medium range.

While its 5mm ammunition is not as powerful as the 5.56mm round or the .308 caliber round, it is found in larger quantities since it is used for the minigun as well. Its AP ammo can be bought in abundance from the gun runners, making it a decent anti armor weapon.

Mods

 * Extended magazine

Locations

 * It can be found in the Gun Runner's facility in New Vegas. Pick an average lock to get in and avoid detection or you will be attacked. Also, one bought from the Vendortron at the kiosk right in front of the gate.
 * One can be bought from the Arms Merchant at the 188 Trading Post in (usually) average condition.
 * One can be found in the Generator Building at Nellis on a dead Boomer.
 * There are two located in the armory of Vault 34.
 * One can be found in a crate behind a very hard lock in the lower floor of Gomorrah
 * Lily Bowen carries a unique, silenced version when you recruit her as a follower.
 * Super mutants in Black Mountain may carry this weapon, and it is possible to pick up about 10-20 rifles due to the large amount of mutants, making this by far the best place in the game to get an assault carbine in good condition.
 * One is also carried by Nero in the Gomorrah Casino, and can be taken after helping Cachino in the quest How Little We Know.
 * One is found on the corpse of a super mutant brute in the water of the lowest level of Ruby Hill Mine.
 * May be found on one of the Nightkins in Black Rock Cavern
 * During Unfriendly Persuasion, the mercenary Norton will carry one.
 * Can be found sometimes on Isaac if killed by the Gun Runners location.

Behind The Scenes
The assault carbine is based on weapons from the real-world ArmaLite AR-15 rifle series, best known for its most common derivative, the M16 family used by the United States military. The assault carbine itself looks a lot like the M4A1 carbine variation, which is in fact chambered for 5.56mm rounds. The AR-15 series began in the 1950s, so it is not unreasonable to assume that in the Fallout universe this weapon family was developed in a similar way.

Appearances
The assault carbine appears in Fallout: New Vegas.