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The second main variant of the U.S. Army's M6 heavy tank. This one has a much larger turret and main gun, and the hull guns have been replaced with a massive armoured glacis to, in theory, protect the tank from equally heavy return fire. However, like the earlier version, the M6A2 was never deployed in battle. Accounts differ as to how many A2s were made, but all were scrapped by the end of WWII, and only a handful of photographs remain.
Ordering the small variant will give you a single tank.
Ordering the medium variant will give you two tanks.
Ordering the large variant will give you five tanks.