Maus Heavy Tank was a World War Two German project to create a massive tank that would have armor that was nearly impenetrable to enemy tanks and to have a gun that could destroy any enemy tank.  The Maus was given a 128 mm KwK 44 L/55 gun, a coaxial 75 mm KwK 44 L/36.5 gun and a coaxial 7.92 mm MG 34.  Hulls and turrets for six or more were cast, but no tanks were likely operational, although rumors persist that at least one was sent to Berlin near the end of the war for combat use.  This is a very large unpainted, and unassembled HO scale model kit with metal barrel.