I actually stopped in at Not Just Guns for the first time last night, just to check it out. It was good to see a store that stocked AR parts. I know Total Firearms carries some, but last time I was there and asked about something I was told, 'the gunsmith was not in, and I would need to come back when he was there, to make sure they got me the right part'. I was looking at grips for what its worth, and wanted to feel the texture of the Houge grip, not sure how that requires a gunsmith.
I did like the atmosphere at NJG. As others have said, stock was a little thin, but I did catch part of a conversation, with two guys and the cashier, and they had ordered items and they just come in (The customers seemed happy with the turn around time). As for prices, after seeing the Anderson lower at $89 in the display case, I was not looking that close at the tags on the handguns.