Thanks for the recommendations, I was running late and was only able to stop at Manchester Firing Line. What a great facility and almost a museum of NFA arms. I really like the layout of the place, but it was hard/impossible to check out the ammo or accessory section. It sucked to see all the toys I couldn't buy from the 25 round mags for my Ruger 10/22 to the S&W Shield... While I was there, someone rented a machine gun on the range.
Not a lot of used guns or revolvers, but this appears to be more of a plastic/ semi-auto shop anyway. I will have to check out the others, when I have time.
Chris