https://gamesartist.co.uk/fixed-carbine-stock/
3D Artist, Bohdan Potikha has created this incredibly detailed, Magpul MOE Fixed Carbine Stock - check out the wear and tear! In this article, he talks about, goals, software, references, modelling workflow, ZBrush, UVing, baking, texturing workflow and rendering.
https://www.artstation.com/bohdan_potikha
https://www.artstation.com/artwork/LR5g8l