F1 Grenade 3D model purchase (Polygon mesh 3D model) is available on CGTrader for $38. Original author: Plutonius3d. Specs: 1260 polys, 685 verts.
STL (Stereolithography, filesize: 22.4 KB), OBJ (OBJ, filesize: 31.1 KB), MAX (Autodesk 3ds Max, filesize: 42.1 KB), 3DS (3D Studio, filesize: 19.3 KB), OTHER (Other, filesize: 12.6 KB)