[Marttt]

I downloaded the main post version, did a test right now and is working fine for me.

Better to test in the Whitetaker's Gun Shop (Dead Center - c1m2_streets) where you have a lot of weapons, then look for the AK47 and Magnum models which has more noticeable different skins.

There is no cvar to set a specific spawn skin yet.
I gonna add an admin command in the future to make the RNG in real-time.