If it's ok I'll add my recent experience to this older thread, though it's safe to say nothing has really changed. I've visited a few times recently since it's so conveniently local. So far, the friendliest person there was actually Walter himself. If he's not in the shop, it's miserable. A few of the older (might I add "larger") gentleman that work part time could barely speak to me the last time I was in there. All I wanted was a couple boxes of [wildly overpriced] ammo, and they wanted me out as fast as possible - it was right in the middle of their store hours, and there were no other customers.
Speaking of the prices, it isn't news how overpriced this place is. For reference, 9mm goes for 30+ cents per round on sale. They do carry preban AR mags, but will try to charge you at least twice what they're actually worth. As an added bonus, there are always random guys just hanging out in the store, staring at you while you browse and making comments on anything you purchase or ask about. I'm cool being friendly, but that store is too small even without nosy eyes looking over your shoulder the whole time.
All in all, I say just head to Four Seasons or Precision Point. No need to deal with rude BS while paying more money than anyone ever should for a couple boxes of ammo. (p.s. if you ever go in, check out their consignment prices - you can buy some of those guns new for less than their used prices)