I just went to Guns and Ammo Warehouse in Manassas and they only have AR's , a Sig 556, and a couple used SKS, a G3 clone, and a FAL clone. No AKs. VA Arms has a couple AKs, a couple Galils, 1 G3 clone, an original used HK G3 I think, and a load of ARs. Blue Ridge in Chantilly has a couple AKs in Romania, Yugo, and Chinese models, and they have a HK MP5 for about $4k.
I'm looking as well and have been reading as much as I can. I'm in Fairfax so there isn't a whole lot of selection. Clarks down in Warenton doesn't sell any assault rifles. I'm thinking to buy online but I hear so much complaints about quality for the cheap Romanian guns built by Century Arms and some from Arsenal. Redstick might be a good option for online guns. Google Redstick or Redjacket firearms. I just want to spend like $400 on a good quality AK but this may not be possible. I can't justify spending $700 to $1000 on an AK.