last post before work, I SWEAR, lol.
try this place:
http://www.cheyennemtnoutfitters.com/contact.html
it's not NNJ it's central, about 3 minutes from my house here in the hamilton/trenton area. They used to stock all different types of AR style rifles when they were combined with Harry's Army Navy. Bought most of my accessories there, friend of mine got a real good deal on a flattop M4gery S&W M&P-15 from them. I'd say give a call and if they have what you are looking for in stock and for a price that's ok to you, bite the bullet take a ride and get it. Otherwise you may be stuck waiting around for a long time.
It would probably be best to figure out what kinda AR you want, M4gery(14.5 pinned to 16 or 16 with fixed collapsable stock), govt profile(20" with full buttstock), flattop(no carry handle more options for sights), varminter(accurized with 20-26" barrel for hunting varmints), predator(accurized with 24-26" barrel many times stainless, for hunting coyotes and other feral predators), etc.