I found this model on Tektonten Papercraft. Which originally made by DeviantART artist "Technoscream" specializes in 3D renderings and animations of mechas. This Stalwart Robotic Missile Tank paper model is his first venture into papercraft design. The description of this mecha indicates it is encased in thick armor plating and armed with two missile pods and a hull mounted minigun. The finished papercraft is only around 2 3/4" (7 cm) tall, and I rescale it and now 2cm tall. The template contains five different colored tanks and may downloaded here.