Sturmpanzer, armed with 15cm Sturmhaubitze 43 L/12 gun, was developed by Alkett/Krupp company. Model depicted is mid-production version, with driver armored cabin / periscope opening, and side pistol ports for close-in defense. Note measurement unit style differences, Germans prefer Centimeter usage (ex. 15cm), while Americans prefer Millimeter usage (ex. 150mm).

Early Stupa versions had Panzer II-style driver visor slits. Since enemy rounds could penetrate cabin via that opening, entire driver position was armored encased with separate periscope mount. Spare tracks bolted to front hull provided additional armored protection.

To mimic battlefield wear-and-tear, front fenders removed via Dremel drill, remaining ends softened over a candle, a pencil's eraser end used to deform the parts to represent collision damage.

Rollover : For towing cables, plastic cable loop was cut from its original part, hollowed out with X-ACTO knife, model ship rope inserted into opening, which enabled flexibility in vehicle placement. Tarpin made from tissue paper soaked in Elmers Glue + Water. The Demodernization of the German Army in World War 2 - www.ospreypublishing.com/content2.php/cid=68