Atomic grenade!
The model was made in Autodesk Maya. This is a low poly, game-ready model with all maps and materials.
High poly textures were made in Substance 3D painter for Arnold render, Unreal Engine, Cryengine 3, Unity, and any other possible use.
It can be added to your game or animation futuristic project, all of the meshes from the bottom to the ring are different models, but they have one common UV map.
If you use Maya as well as I do, after putting textures and maps on this model, you have to play with attributes of metalness and roughness to have the result you needed.
4096x4096 Textures.
Poly count:
Polygons - 3135
Vertices - 6112