ACs worked wonderfully in the original MW2, I just packed one or two and loaded up max ammo. For the Ghost bears, I couldn't resist the Arrow's range.
.Mercenaries, though... Zeus with the early ERLlas... later pulse lasers...Good days, but realy, my shots went through the enemies, I could swear... had to use lasers to keep up the barrage.
Still remember the Escape the Clans mission... and the early Ice one...
Damn, got all nostalgic now...