Longer derivative of the M2. Equipped American and British vehicles such as the M4 Sherman, the later models of the M3 Lee and the Churchill III/IV NA75 (scavenged from Sherman tanks in the North African theatre). The US Army also experimented with mounting the M3 on various wheeled carriages for use as anti-tank gun, but the program was cancelled due to a lack of requirement.[6]
- br1
- br2
- br3
- no
- Barrel length: 40 calibers (3 m)
- Muzzle velocity: 619 m/s (2,031 ft/s) with M72 AP shell
- Maximum Rate of Fire (ROF): 20 rounds per minute[5]
https://www.wardrawings.be/WW2/Files/1-Vehicles/Allies/1-USA/02-MediumTanks/M3-LeeGrant/M3A1-Lee.htm

M3
M3A1
M3A2

M3A3
M3A4
M3A5
- m3 and m6
- m3 and m5
- m2 and m6
- no
The M3Lee/Grant had at least 5/6 models of lee and 1/2 models of grant. depending if you call it the lee 6 or the Grant 2 tank. The Grant/Lee was armed with the M5/6 37MM and the M2/3 cannon. The shorter barrel m2 cannon is in game while the longer barreled m3 is not. The grant and lee are good tanks for decent armor and a large crew. the large size and hull mounted main gun are less good.
With all the Shermans in game it is insane that we have 1 lee and one grant 2 of 7 tanks. might as well throw in the m6 37mm cannon just to keep the m3 cannon. for a series of tanks that carried the american flag before the wide spread use of the m4 its a shame it has so little presence in war thunder and enlisted. if possible my choice would be the M3A4 its a late model lee with a trim low profile rear.
