Hey guys, if you live in the Charlotte/Hickory/Winston Salem area of NC you should check out Carolina Tactical Ops in Hudson (just norht of Hickory). Brett is the AR man there and they are great to deal with. I recently did my first build and Brett was a huge help. I bought a RRA upper and lower from them and was pleased with the prices. It was worth the 1 1/2 hour drive to get great customer service. These guys are great to deal with.
Their website www.carolinatacticalops.com hasn't been updated in a while but you can get the ph# and directions off of it.