Went there this morning with a friend. He came back with a Beretta Storm in 40SW (I only bought accessories and a safe, 30 days since my last handgun haven't passed yet...)
There was a fair collection of firearms including several Class III (Tommy, BAR, grease guns). There was also an M16 with 40mm grenade launcher (I wonder how that can be legal in MD unless there is a trick, but it looked the real thing...).