No, we are not having |AČK| as the tag. My main reason that in some stats readers it will appear as a ? since it has a special character. I will consider A2K instead of ATK although I do prefer ATK at the moment because it sounds like "attack" and there is already a large COD2 clan with A2K. Another point is that ATK is slightly easier to say that A2K, and ATK has a slightly better "ring" to it.