37mm M6 L/53

The 37mm M6 L/53 is an American light tank gun used as the primary weapons of the M8 Greyhound and the M5A1 Stuart, as well as a secondary weapon of the M3 Lee. Compared to its German counterpart, the 37mm KwK 38 L/47.8, it does significantly more damage, and can penetrate nearly 2x the amount of armor than the German 37mm can.

Shot Penetration
The 37mm AP M74 shot is an American armor piercing composite ballistic cap shell. It has a projectile velocity of 792m/s, 40-70mm of penetration and 250-400 damage.

The 37mm APC M51B1 shot is an American armor-piercing capable shell. It has a projectile velocity of 884m/s, 55-80mm of penetration and 350-450 damage.

The 37mm HE M63 High-Explosive shot is an American incendiary shells used against personnel. The shell is filed with TNT and the blast of the casing produces thousands of lethal fragments. The projectile has a velocity of 792m/s and the resulting explosion deals 350 damage at 0m, down to 0 damage at 7.5m.