Action quake 4...mod suggestions?

Someone mentioned Action Quake in the Quake 4 thread and it got me wondering if there are any great mods out there like AQ. There are a bunch of new game engines out, so does anyone have any cool mods they would recommend? I haven’t played anything recently but my favourites used to be AQ and Navy Seals mod (and of course CS). High realism would be good and I prefer non-WW2 setting cause I’m burnt out on those atm.