I created this around a year ago to accompany my Winchester model: https://www.artstation.com/artwork/A9vGaX.
Wanted to show this seperately for a long time now but never got around to do it.
Created in 3dsMax, Sculpted in ZBrush
Baked in Marmoset Toolbag
Textured in Photoshop/Substance Painter
Rendered in Marmoset Toolbag