Being a dedicated CS dosen't mean you only hunt snipers. As I understand it a CS can still be a line rifleman, however the have the skills and kit to be deployed against a sniper, should one appear.
In Airsoft it's mostly just someone with a hopped up AEG and a good eye. Being a CS dosen't prevent you from doing other things... except maybe CQB since its likely a CS Rifle will be far too hot for close engagements.
Maybe you'll find someone else to help you. Maybe black mesa... THAT WAS A JOKE, ha ha, fat chance.
My Buy/Sell 1337ness rating