It is pretty solid, not quite the same rigidness as if mounted to a UAII cabinet. It only weighs 35 lbs, so you can tip it over if you tried...
...this product was designed to be lightweight so it could be moved around easily, as it is not meant to be a permanant fixture. We are designing another model that is fully enclosed, with a coin door, rear vented panel, and a hinged top that the control panel sits on...exposing a keyboard area inside. This model is meant to be more of a permanant fixture within a gameroom and is rock solid.