The first built prototype of the M7, the T7.
Welded hull, five-speed hydramatic transmission, volute spring suspension based on the M3/M5's. The turret of this model bore similarities to the M3 Lee/Grant's, with the same 37 mm (1.46 in) M5/M6 gun.

Medium Tank M7, initially Light Tank T7, was an American tank, originally conceived as an up-gunned replacement for the Light Tank M3/M5 ("Stuart"). The project developed to mount the same 75mm armament as the M4 Sherman. The M7 (T7E2) had significantly less armor than the M4 Sherman, no greater firepower, and held only a slight advantage in top speed. For these reasons, and because the M4 was already battle-tested and in full production, the M7 was cancelled in 1943.