lol, well there you go then. Pistols with longer barrels (and thus more muzzle velocity) generally keep up better with AEG's on a field, from what I've seen. Examples are TM Hi-Capa's and TM MK23's. I've definitely seen a few Beretta's used as primaries, and those seem to get the job done in the right hands.
Remember to factor in the cost of buying a handful (or more) of mags. Running around with one mag in a pistol doesn't look like any fun.