The prototype super-heavy self-propelled artillery unit, compliments of the U.S. Army. Only two such units were built. Despite the fact that development began in 1943, this vehicle wasnot been completed until the end of the war.
In 1946 it was renamed Super Heavy Tank T28,because at 86 tons, its armor alone set
it a class apart from the self-propelled gun.
Initially, this tank was to sport 200mm armor and an electric transmission, but eventually a mechanical transmission was approved, and its armor was increased to an astounding 300 mm. Given its increased weight, special attention was given toreduce pressure on the ground. The problem was solved with two pairs of tracks.
Secondary: 12.7mm M2HB