Just played two games today and totally annihilated with the handgun (the M9 I believe it's called).

I was trying to get the tactical knife since I rarely use the handguns except in an emergency of running out of ammo. So I had FMJ and Silencer and was 25 kills from getting the tactical (and obviously Akimbo). So I played two matches both randomly put me on Afghan. Within' those two games I acquired my knife using only the handgun and NOTHING else.

It's hard as hell but fun when the other team realizes the top player on the winning team only killed using a handgun.