I made it in Blender 2.82. This is not high poly model. I used the mirror modifier. There're no materials. I haven't rigged or animated it. It's just a tank.
STL (Stereolithography, filesize: 8.31 MB), OBJ (OBJ, filesize: 11.6 MB), DAE (Collada, filesize: 13.2 MB), FBX (Autodesk FBX, filesize: 3.67 MB), BLEND (Blender, filesize: 7.67 MB)