I've been looking around a gun information site and it has some pretty cool guns on there.
The FN FNC looks neat. It's basically like the precourser to the FAL, I don't know how modern it is though.
The sweedish spin off looks lovey, again, may not be too modern.
And then the SA80/L85, which i believe is in service, is a bull-pup and there fore is awesome.