nexon made chams for it's own game, and they don't know how to prevent modders.
I wouldn't be surprised if they did. But released outside of the Nexon, Combat Arms office? no....
The Combat Arms NA creators / maintainers can do whatever they want to Combat Arms. They have all the server files. They're the creators/gods of the Combat Arms world.
It's like Runescape Private servers. if you have the tools (server files) of runescape, then you can make your own Runescape world, change anything you want, add anything you want, make weapons, walk through walls, teleport to certain locations. (X:573 Y:885)