Check out Canon cannon on wheels 3D model on CGTrader for $6. High-quality mesh by soumyadipta-dutta: 4832 polys, 4736 vertices. Textured, UV Mapped.
OBJ (OBJ, filesize: 376 KB), FBX (Autodesk FBX, filesize: 386 KB), MA (Autodesk Maya, filesize: 1.46 MB)