AT-T Artillery Prime Mover. Plastic modelling is an area of model building where models are predominantly made of plastic (today mostly polystyrene). As a rule, these are drive-less, stand alone models in which the interest is more on a high level of detail than on robustness or function, you can also play with them but however that is limited. Prefabricated parts are predominately used. Rarely, one finds kits from deep-drawn forms (Vacu kits) and pure resin kits.