Best multi-kill/ with what?

[5,5]

I killed the entire other team (6) with one predator missile once, never came close since.

Edit: Also one time killed both entire teams with a nuke.

[Josh]

On Run-Down, I had a c4 placed in a way I could defend the HQ and shoot the C4 when they rushed me. (Only one left.) Killed 4 by shooting c4 with gun. =D

[Oleh]

6 in 1 frag on terminal s n d start of match through the window of customs spawn.

[crazed]

Just got a 5-in-1 AT4HS on Estate at spawn

[AaronOnlineKid]

I got a multi Kill with a RPG once due to people camping >.<