Plainfield
M2 Carbine .30
Completely reworked by The Firing Line with forward mounted pic rail for optics
The M1 carbine was originally planned to include selective-fire capability, but production proceeded without that feature. Fully automatic fire was added with the M2, an improved, selective-fire version of the M1 introduced in 1944. The M2 also incorporated late M1 refinements, such as an updated rear sight, the addition of a bayonet lug, and other minor changes.
The M2 carbine became the most commonly issued carbine variant during the Korean War. A thorough assessment by S. L. A. Marshall found many soldiers complained about the weapon’s limited effective range, which allowed enemies to close in and throw grenades. A deeper analysis showed that many complaints were tied to ammunition depletion, as some soldiers fired their M2 in full automatic for too long. Those who fired in semi-automatic at longer ranges generally reported better performance, a pattern more common among more experienced troops.
Typically, the M2 was assigned to second-line troops—administrative and support personnel with limited combat experience and training in small-unit tactics—who nonetheless sometimes had to engage the enemy at critical moments, such as during breakthroughs or ambushes. Marshall noted that nearly all lethal shots with carbines in Korea occurred at ranges of 50 yards (46 meters) or closer. The M2 also proved to be a preferred weapon for night patrols and saw early use in the Vietnam War by special forces, ARVN advisers, and air crews.
Specifications
- Mass: 5.2 lb (2.4 kg) empty; 5.8 lb (2.6 kg) loaded with sling
- Length: 35.6 in (900 mm)
- Barrel length: 17.75 in (451 mm)
- Cartridge: .30 Carbine
- Action: Gas-operated (short-stroke piston), rotating bolt
- Rate of fire: 750 rounds/min (M2)
- Muzzle velocity: 1,990 ft/s (607 m/s)
- Effective firing range: 330 yd (300 m)
- Feed system: 15- or 30-round detachable box magazine
- Sights: Rear sight—aperture; L-type flip or adjustable; Front sight—wing-protected post
