This is a WW1 German Hand Grenade. I have included the PBR materials and I have tested this model in Unreal Engine 4 and can confirm that the model loads in and works. This project contains 2 assets from CC0Textures.com, licensed under CC0 1.0 Universal. Here is the explanation for the license: https://creativecommons.org/publicdomain/zero/1.0/
OBJ (OBJ, filesize: 158 MB), ABC (Alembic, filesize: 158 MB), BLEND (Blender, filesize: 158 MB), DAE (Collada, filesize: 158 MB), FBX (Autodesk FBX, filesize: 158 MB)