Check out Medieval War Canon Lowpoly Low-poly 3D model on CGTrader for $2. High-quality mesh by SecondOrderEffects: 1388 polys, 1386 vertices. Animated.
BLEND (Blender, filesize: 976 KB), OBJ (OBJ, filesize: 174 KB), FBX (Autodesk FBX, filesize: 660 KB), DAE (Collada, filesize: 490 KB), STL (Stereolithography, filesize: 134 KB)