I recently did a 3D Coat Painting Demo for my Alma Mater, Here was the weapon I created to use in my presentation.
The model and texture are
Based on the art of Joshua Brian Smith
Main Images used as reference:
I pretty much went strait off the concept, so the lighting would be incorrect if the weapon would be used in-game as a character item as opposed to it simply being a prop. Working texture was 256x512