The M3 Lee was an American medium tank of the Second World War. It went into production in 1941 and was designed by the Rock Island Arsenal. It was a 27- tonne medium tank with a 75 mm gun mounted in a side sponson, a 37 mm gun plus coaxial machine-gun in a small rotating turret, a bow machine-gun and a fourth machine-gun on the commander's cupola for all-round and anti-aircraft defence. It had a crew of six, armour plate up to 57 mm thick and could achieve a top speed of 26 mph and had a range of 193 km. Research M3 Lee More pictures of M3 Lee