Here is a sci-fi smg that I made in 3D created by Lin Hongy. This was modeled in Blender, textured in substance painter, and rendered in Unreal Engine 5.
https://www.artstation.com/artwork/xDgZR4
Render #1
Render #2
Render #3
Render #4
Textures & Alphas (Base Color - Emission - Normal - ORM)
Wireframes & UVs (Tris - 48,976)
Reference by Lin Hongy