Getting weapons not released yet

When you become the spy you get a gatling gun and a flame thrower. In order for you to have those weapons, you have to have those weapons' files in a folder some where in you CA folder. But I cannot find it.

I remember when I played Soldier Front, you could get weapons that weren't even out yet because when ever they updated the game, they would include about 2 or so weapons. So that when they did release the weapon, all they would have to do is a quick update and then the weapon become available. This eliminates a lengthy DL time for most users. Well, when they did the update, all it did was change the file name, thus making available for you to buy. I figured this out and would just change the file name myself and have weapons that weren't even out yet.

There is a problem with doing this in Combat Arms. Combat Arms does not have a weapons folder. Or if it does, I couldn't find it.

Any ideas?