I think he is trying to make the King Tiger or Tiger 2. This is s good design for a tank or tank destroyer. But this tank design falls into tank destroyer. This could make a good tank destroyer design. I just looked up Royal Tiger, turns out its a King Tiger. If you are trying to make the King Tiger take it apart and google RoyalKing Tiger for the image of it. Then you have a RoyalKing Tiger lego tank. This comment isn't meant to mean, rude, insulting.