I used to play, but I switched to AVA. Permanent guns FTW.
CA is basically a bloom based shooter with little recoil. Guns range from 6-1 shot kills. Before I stopped playing, the L96 was still the best sniper, but inaccurate. M416 was the best AR, but weak. M4 was a 416 with a bit more bloom.
Oh and before you think otherwise, the TPG-1 was in AVA first. As in it was in the Korean, JP and NA versions LONG before the CA team decided to copy it.