$20 BM21 Russian Vehicle BM-21 Ural-375D Low-poly 3D model by RealTimeX. Available on CGTrader with 188695 polys and 199727 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 15.8 MB), FBX (Autodesk FBX, filesize: 24.4 MB), MA (Autodesk Maya, filesize: 15.8 MB), PNG (PNG, filesize: 63.6 MB)