I went at around lunchtime today. Took me forever to get there, traffic was a mess on Rt. 4 all the way from 301 to the Equestrian Center.
-Fulton Armory only had complete rifles and stripped lowers ($149 IIRC). No parts, tools or ammo.
-AmmunitionStore had Winchester .223 (not Q3131) for ~$210. Also Romanian AK parts kits, new with oil paper in the bore, for $129.
-Another ammo dealer had 3 500-rd boxes of XM193 at $116 each. Also Federal AE223 at $176/1000. Wolf was $108/k for .223 55gr.
-Shooters Discount had some NIB Colt LEO Carbines: 6290 for $1449, 6721 for $1399, and 6450 for $1449.
-Dennis A. Todd was there with all sorts of stuff I'll never be able to afford. He did have 9mm Colt SMG LULAs for ~$35.
-The Armory (of Annapolis) was there with a bit of Class III stuff, including an STG-44 (I think) and some HK and Colt full-auto. They had a sign saying they stock AAC stuff, but didn't have any.
-The AR parts dealer in the center (wearing a US Border Patrol hat) has Lone Star Ordnance "Stowaway 2" grips for $12.95. I also bought a few small parts from him; AR pin sets (for spares) were $3.
-1 Beef Jerky dealer, the custom earplug guy, and the rest of the usual suspects: Continental Arms, Valley Gun, OC Sports, Bel Air Gun & Pawn, etc.
I ended up hitting Bass Pro for 2k of Q3131 on the way home.