Dino3 Self-Propelled Sprayer - Open and Closed Arms (Polygon mesh 3D model) is available on CGTrader for $139. Original author: markos3d. Specs: 11215167 polys, 5854690 verts.
STL (Stereolithography, filesize: 277 MB), OBJ (OBJ, filesize: 289 MB), MAX (Autodesk 3ds Max, filesize: 71.6 MB), LWO (Lightwave, filesize: 283 MB), HRC (Autodesk Softimage, filesize: 337 MB), 3DS (3D Studio, filesize: 83.9 MB), BLEND (Blender, filesize: 326 MB), C4D (Cinema 4D, filesize: 143 MB), FBX (Autodesk FBX, filesize: 325 MB)