Yeah, that IS Buffalo Gun Center... I bought my first gun from them (at their old location in the 60's). They do have pre-bans, but you need to ask for something specific. They don't seem to be into letting all the looky-loo's handle all their best stuff.
A few years ago I was buying a used P-226 from them, and just out of casual conversation, I had mentioned that I wished that I could find a nice pre-ban AK-47. To my surprise, the guy said, "fixed or folding stock?" He showed me a very nice Polytech with the milled receiver, which I bought along with the Sig. They have the "good stuff" hidden in the back room. Hard to get them to make deals, though... you really have to work on them.
Johnson's Country Store in Lockport seems to have a decent selection, and they seem to be more willing to dicker over prices. I've bought stuff from both places.
It WOULD be cool for a lot of people from this area to meet up at a local show sometime... the Lockport show in late winter is my favorite. Prices are high, as is the B.S. factor in some cases, but it's always a good time.
FITTER out