The best price for a complete lower is [url=http://www.ar15.com/forums/topic.html?b=7&f=21&t=153544]Iblis[/url] at $200. However, he uses the Mega and Stinger lowers. If you want a brand name, CMMG also sells the lower with the standard buttstocks for around $240. The next best deal is from [url=http://ar15sales.com/]Legal Transfers[/url] for $250. They use their exclusive "US Property" marked Rock River lowers. Uppers are generally the same price wise. Chrome lined barreled upppers run around $500 complete with bolt and carrier assembly. Non-chrome lined barrels will cost a bit less, but for the extra $50 or so, the chrome is worth it. It's still going to cost you around $700 unless you want to hunt for the best prices for parts and assemble everything yourself. Getting a kit will still cost you at least $600 for a stripped lower and a kit from, let's say J&T. That's not counting shipping, taxes, transfer fee, etc. You'll still save a little bit over a complete rifle, but not much.