A COMPLETE AR-15 for $800! More like a kit, that you have to build yourself, but RRA has great complete uppers for $500 SHIPPED!
I had seen some posts flying around about getting a complete upper, but I can't find them. So whoever was looking for it, just call up RRA and get the CAR Upper Half, with the R4 hanguards, Post Ban Style. Least expensive, and very nice brand.
Hope it helps!