This is more of a "toy ride" as a model. Installation is easy and quick. The legs are amputated their inner half, giving way to a balance bar system for the movement of the toy. The "engine" block occupies and enlarges the lower part of the cabin, with a "key" to wind the somewhat ungainly mechanism on the side. The vehicle "on" Indeed, even if the system is a bit old. In short, "collector", but for a real "model" AT-ST, look elsewhere!