Plutonium

Is this only for multiplayer or does it also apply to zombies? if so, that would be dope asf. Regardless if it does or doesn't work for zombies, beautiful textures.

I always loved playing bo1 zombies, but something I recently realized despite having the plutonium version of bo1 zombies is that I would want to see what it's like to use certain weapons that wouldn't normally be used on a particular map. For instance, it would be cool seeing a weapon like the winter's howl being on a map like kino or the human gun from call of the dead on something like five lol. Anyone can tell me if I'm wrong, but I could've sworn somewhere there was a way to do this by I think going into the files, adding the weapon into the particular map. Like I said, I could be wrong and just be thinking of some other game like bo2 or WaW. If anyone knows, can you give me the directions, script or modification for this?