Still trying to get all the head shots objectives with the assault rifles, so I can get the golden AK-47. Still, though, for sheer range and power I'd have to say the M-16 with a red-dot sight. Better control with the gun in the game.
As for Light Machine guns, when our team starts getting our butts kicked, and it's time to stop sneaking around, we all just always switch over to "Goldie" (gold M-60) and just start tearing things up. That always equalizes the playing field pretty quick. We all have UAV Jammer enabled, so no matter how many UAV's get sent up, they're hosed. Works best, though, when you're in a clan and everyone has that as one of their options.
Fav SMG is probably the P90. Always good for close quarters.
--Sadriel Fett (BFFC Moderator)
"I'm just a simple Fan, trying to make my way in the universe."