Military Cannon Robot GF32 (Polygon mesh 3D model) is available on CGTrader for $89. Original author: infectofficial. Specs: 174701 polys, 190385 verts.
BLEND (Blender, filesize: 1.69 GB), BLEND (Blender, filesize: 1.69 GB), FBX (Autodesk FBX, filesize: 11.9 MB), TEXTURES (Textures, filesize: 747 MB), ABC (Alembic, filesize: 18.6 MB), DAE (Collada, filesize: 21 MB), STL (Stereolithography, filesize: 17.6 MB), TBSCENE (Marmoset Toolbag, filesize: 40.5 MB)