New, detailed 3D printed kit. During the Polish campaign, it was realised that the towed sIG33 guns were having difficulty keeping up with the motorised infantry and tanks. A solution was found by mounting the 15cm sIG33 complete with carriage and wheels on top of a Pz Kpfw I with the turret removed. An open topped fighting compartment was added although it offered little protection to the gunner let alone the exposed loaders. The kit is a 3D printed kit with plenty detail and only 4 parts.