Old Pistol Asset

Hello !
This is a personal 3D work made in 2 days
Base mesh made on maya, sculpted on Zbrush, textured with Substance Painter and rendered with Marmoset Toolbag 3.
I also wanted to render it with Renderman but installation doesn't work, it says that a plugin is missing and I can't find any solution.
- 6315 tris (maybe a bit high for game ready asset, don't really know the polygon constraint in recent video games)
- 2 sets of 2048*2048 textures : I could have done this with a single texture set but I wanted to have quite detailed close up.
Inspired by Anton's work : https://www.artstation.com/artwork/lxNdJo

Thanks :)