Free aset sci-fi Free low-poly 3D model by gyh3d. Available on CGTrader with 46163 polys and 45997 vertices. Check it out on CGHub.
BLEND (Blender, filesize: 6.78 MB), OBJ (OBJ, filesize: 6.6 MB), FBX (Autodesk FBX, filesize: 2.36 MB), STL (Stereolithography, filesize: 4.64 MB)