Operator and Weapons Low-poly 3D model is available on CGTrader for $15. Original author: hwmodels. Specs: 48786 polys, 46401 verts.
STL (Stereolithography, filesize: 4.36 MB), OBJ (OBJ, filesize: 7.26 MB), FBX (Autodesk FBX, filesize: 3 MB), DAE (Collada, filesize: 12.6 MB), BLEND (Blender, filesize: 7.64 MB)