The M1 carbine served as a lighter and more compact alternative to the unrelated M1 Garand, and was typically issued to airborne infantry, vehicle crewmen, and rear line elements. It filled a role similar to today's personal defense weapons, offering greater firepower and range over standard sidearms like the M1911 or M1A1 Thompson but a larger magazine and better portability than the Garand. However, subpar firepower eventually lead to its replacement after the Korean War by the M14, though it continued to serve in some applications until the Vietnam War.
The M1A1 variant is a Paratrooper model of the M1 with a folding stock and pistol grip, and is the model of the weapon that appears in the Battlefield series.
The M1 is an all kit Carbine introduced alongside the Battlefield Hardline: Robbery expansion. Like the M1A1, which was released alongside the Criminal Activity expansion, the M1 does not require ownership of the expansion and is available to all players.
The M1 has less range than most of the other Carbines and Assault Rifles and is also only semi-automatic, but has high damage, making it a good mid-ranged weapon. Similar to the M1A1, the M1 Carbine is only able to equip weapon specific attachments and can only equip Metallic Paint. The M1 is able to equip a Stock, Stubby Grip, and Flash Hider.
Upon obtaining the first gold service star for the M1 Carbine, the "Grandpa's Automatic" achievement/trophy will be unlocked.
|Image||Name||Criteria||Achievement Points||Trophy Type|
|Grandpa's Automatic||Earn a Gold Service Star with the M1 Carbine||25G||Bronze|
— In-game description
The M1A1 Carbine is unlocked for the Assault kit at class rank 5. The weapon is a four body shot kill up to 50m, but suffers at distance compared to other semi-auto rifles as its damage drops off to a mediocre five shots past this range. In addition, its low bullet velocity can hamper accuracy at range, but this can be buffed with High Velocity Bullets. The M1A1's primary advantages are its highest-in-class rate of fire at 450 RPM, and low per-shot recoil that allows users to make the most of its considerable output, and pairs well with magnified optics. Its hip-fire performance is better than average due to these combined factors, and in general its rate of fire allows the weapon to be more effective at closer ranges than any other of the semi-auto rifles, but lacks the consistency at extreme range shown by its slower firing but harder hitting contemporaries.
Its middling default magazine capacity of 15+1 rounds can be upgraded with the Extended Magazine specialization, doubling it to 30+1 and achieving best-in-class parity with the Gewehr 1-5. Its other specializations largely function to bolster the aggressive, mobility orientated playstyle afforded by the weapon's statistics.