Check out Medieval Ballista Handpaint Cartoon Low-poly 3D model on CGTrader for $39. High-quality mesh by OlegShuldiakov: 800 polys, 850 vertices. Textured, UV Mapped.
OBJ (OBJ, filesize: 134 KB), FBX (Autodesk FBX, filesize: 80.2 KB), MAX (Autodesk 3ds Max, filesize: 764 KB), OTHER (Other, filesize: 3 MB), MA (Autodesk Maya, filesize: 143 KB)