Changing weapon skins.

Hello, i have a question. Is there any way to modify the default weapon textures? I miss the good ol’ times where i skinned the hell out of CS:S. Would like to create some new weapon camos for the Assault Rife for example. I don’t know much about unity, so is there a chance? And if No, could you guys add weapon skins to the new workshop feature? I mean we can upload Cloth Skins, why not firearm skins?