The good thing about a Custom Paint Job is you can make the weapon look like it's made from some completely different materials. Putting a texture (like scratches for instance) on top it can have some unwanted results because when you port the texture into the game, it doesn't have the exact same sharp quality it does in your image editing program.
However, I see what you mean with wanting to have some more diversity or scratches and such, which I generally agree with. But this is the factory new version depicted (as you noticed), and I wanted to include that in there for those that wanted that, cus there will be other, more scratched versions, in-game anyhow for those that like that better!
(Also because you're supposed to make a clean texture, since scratches and dirt is added by the game itself). I hope that helps shed some light on my decisions, and I appreciate you took your time to comment and take an interest in my stuff :)

Edit (rephrased some stuff) extra info: I chose to not add any texture that would make some of the parts look more like a carbon fiber or plastic, because I wanted it to have this to look more "ordinary" (within the theme) and not so "specialized" in a way. The AK is a heavy gun in the game, and I wanted this gun to feel the same. Like a heavy, mass produced weapon for the soldiers of this alternate dystopian universe. That's at least my thinking behind it!

I think it looks slick as hell man, hope it gets in!

Thanks I'm glad you like it!

cool.

This is my fav AK skin cool work