The M1 carbine is a weapon in the Medal of Honor series featured exclusively to the game: Medal of Honor: Pacific Assault, or the M1(A1) variant available via modding Medal of Honor: Allied Assault. In real life, the M1 Carbine was developed by 'Carbine' Williams, a former prison inmate with a talent for firearms design.
The M1 Carbine was selected for use by the US Military when it was looking for a potential replacement self-defence weapon for the M1911 .45 pistol for issue for issue to officers, rear-echelon troops and support personnel not expected to see combat; the Army decided that issuing full-size rifles or submachine guns to them might not be appropriate; specifically, it wanted a weapon that was light, portable and, while being less than a rifle but offering more range, power, and capacity than a pistol.
The Carbine was chambered for a light .30 Caliber cartridge, developed specifically for the weapon, but it was little more than a slightly-enhanced pistol round, inferior to the larger, standard .30-06 rifle rounds used in larger weapons (intended for standard issue) such as the M1903 Springfield and M1 Garand rifles.
Medal of Honor: Allied AssaultEdit
The version featured in Medal of Honor: Allied Assault is the M1A1 variant, the Paratrooper version, though it's incorrectly titled the M1 Carbine rather than the M1A1 Carbine. It replaces the M1 Garand in the weapons selection menu should the player download the mod. It is significantly better a rifle compared to the aspects of the Garand as the player can reload mid-magazine, comes with 7 more rounds (15 compared to 8), and does the same damage. So this can be a great alternative to those who find themselves frustrated at the historically inaccurate quirks of the Garand.
Medal of Honor: Pacific AssaultEdit
The M1 Carbine is effectively the same as the Allied Assault version, the only difference being the model now being the standard M1 version of the Carbine with a full wooden stock, used by most regular soldiers. It can also be found in the single-player campaign as a common pick for the U.S.M.C., often used in more significant numbers than all other American weapons in the game (which would be historically incorrect as the M1 Carbine was only intended for select officers and rear-echelon troops), the same can be said for the online Multiplayer for reasons stated above for Allied Assault.