Marksman Carbine

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

Characteristics
The marksman carbine is a semi-automatic, medium-power rifle with a 20-round magazine. Mounted with an enhanced-zoom scope that shares the same mil-dot reticle as the anti-materiel rifle and sniper rifle, it is highly accurate and deadly at long range with a Guns skill of 100, it also has a very low Action Point cost of 14, lower than most pistols as well as being the lowest out of any Rifle in the game. With its good damage, an extremely high rate of fire and a good-sized magazine, and low AP cost it can deal a large amount of damage per second, making it versatile and useful against most enemies.

Durability
The marksman carbine can fire a total of about 1995 standard rounds, the equivalent of 100 reloads, from full condition before breaking.

Modification

 * Marksman carbine extended magazine - cut from the game.

Variant

 * All-American - a unique, camouflaged version of the marksman carbine found in the armory of Vault 34.

Locations

 * Nellis array, Nellis Air Force Base - in the entrance area on the floor next to the dead Boomer.
 * Vault 34 - located in the armory.
 * Gun Runners - can be purchased from Vendortron after level 16.
 * Hidden Valley bunker - can be purchased from Torres, may require the Courier to complete some BoS quests to allow higher tier of equipment to be available to purchase.
 * Carried by many NCR troopers, NCR rangers and Caesar's Legion soldiers at higher levels, mostly during the Second Battle of Hoover Dam and in the dam interior or lower levels.
 * Carried by Legionary assassins once the player reaches a high-enough level.
 * One of them can be found near Securitron de-construction plant on the pipe to the east from the main entrance. Just follow the pipe until you can find a spot which you can jump up onto the pipe.
 * In the waste disposal station, near a skeleton at the end of a tunnelway.
 * Carried by Marked Men if the player reach high levels, if the player level is 40 or above, they will use Armor Piercing ammo against the Courier.
 * The masked NCR troopers in the Hoover Dam Visitor Center may carry them.

Behind the scenes
According to J.E. Sawyer, the marksman carbine is loosely based around "paratrooper-oriented marksman rifles" and are present due to New Vegas' proximity to Nellis AFB.