I don't know of a decent directory except the recommended dealers list on subguns - http://www.subguns.com/c2c3/c3state.htm#Virginia. Personally I use Doug Stockman at Stockman Sporting Goods (www.ssgknives.com). He's not on the subguns list but he is an honest guy and I find his prices tend to be more reasonable than IPS (www.internationalpolicesupply.net). I've had several NFA transfers through him and have bought a bunch of non-NFA stuff. If you're looking for a dealer, I'd highly recommend him. I've also heard good things about John Brown at Battlefield Sports Ltd. (Chantilly, VA) although I've not worked with him personally. There is also Innovative Tactical (www.innovativetactical.com). They're in Northern Virginia but I've not dealt with them myself. IPS and SSG setup fairly regularly at the local gun shows (Fredericksburg, Chantilly, Dale City, Manassas, etc.). There are a few others but locally those are the ones I'm aware of.