75 Mm Gun M2/M3/M6 - Variants

Variants

• M2

A version used on the early Medium Tank M3.

• Barrel length: 31 calibres
• Muzzle velocity: 588 m/s (1,929 ft/s)
• Shell weight (M72 AP): 6.32 kg (14 lbs)
• Armour penetration (M72 AP shell, 457 m, at 90 degrees): 60 mm

• M3

Longer derivative of the M2. Equipped American and British vehicles such as the Medium Tank M4, the later models of the Medium Tank M3 and the Churchill III/IV (scavenged from General Sherman tanks in the North African theatre). US Army also experimented with mounting of the M3 on various wheeled carriages for use as anti-tank gun, but the program was cancelled due to lack of requirement.

• Barrel length: 38.5 calibres (3 m)
• Muzzle velocity: 619 m/s (2,031 ft/s)
• Shell weight (M72 AP): 6.32 kg (14 lbs)
• Armour penetration (M72 AP shell, 457 m, at 90 degrees): 76 mm
• M4

The 75-mm Aircraft gun M4 ia a modification of the M3 gun which is found in medium tanks. It differs from the M3 gun, only in having a seat for the spline machined in the tube. it was mounted on the M6 mount.

• T13E1 / M5

A lightweight version of the M3 with a lighter thin-walled barrel and a different recoil mechanism that was used in the B-25H Mitchell bomber. Uses the same ammunition and has the same ballistics as the M3.

• M6

A version derived from the T13E1 for the Light Tank M24.

• Barrel length: L/38.5 calibres (3 m)
• Muzzle velocity: 619 m/s (2030 ft/s)
• Shell weight (M72 AP): 6.32 kg (14 lbs)
• Armour penetration (M72 AP shell, 457 m, at 90 degrees): 76 mm