War mech low poly and realistic mixed Low-poly (Polygon mesh 3D model) is available on CGTrader for $5. Original author: kavirukshan2002. Specs: 4542974 polys, 4575695 verts.
OBJ (OBJ, filesize: 691 MB), FBX (Autodesk FBX, filesize: 127 MB), BLEND (Blender, filesize: 101 MB)