there is this awesome game, blacklight retribution.
it's a fast fps with a lot of mods and is a lot of fun.
you can also customize your own gun just the way you like it so it fits the best for your playstyle.

register here:https://register.perfectworld.com/bl_splash/4ea33476b76dda78848a1b2f0e119f4f
i play at the us server and my nick is: JewTron
PM me ;)