Welded hull. Some early vehicles had spoke wheels. Used only by USMC and Lend Lease. Had the General Motors 6-71 6046 motor. The engine was two GM truck engines, each mounted on each side of the engine compartment. They each were geared to a single prop shaft.
Manufacturers: Federal Machine and Welding Co., Fisher Tank Division, General Motors Corp., and Pullman Standard Car Manufacturing Co.
M4A2 (76mm): Welded hull. GM diesel 6-71.
76 mm gun replaced 75 mm in turret. It had better velocity and thus armor penetration. 2,600 ft/sec, range of 16,100 yards, penetrate 4 inches at 1,000 yards. Gun can also be used in indirect fire mode as an azimuth indicator and elevation quadrant was also available. Water protected ammo racks installed.
The commander had a vision cupola mounted above the turret hatch. It had 6 prismatic vision blocks of 3" laminated bullet-resistant glass.
The ammunition racks were water protected and there was a traveling lock for the main armament in the front to hold it while traveling in non-combat areas.
Tank Recovery Vehicle M32B2: Based on M4A2.
Sent to Russia and used by US Marine Corps. The Russians didn't like the high silhouette, thin armor, and poorly angled armor. Called the Sherman II by the British.