Spikes Tactical billet lowers shipping soon...
Spikes Tactical has some new billet lowers that they just got BATFE approval on. You can order complete rifles or you can mix-n-match your parts. I think you can get a fully pimped out rifle (gas impingement) with a billet lower for that price and have a much nicer rifle than a Bushy. Spikes Tactical makes great stuff and has the best customer service in the industry. Tom the CEO will answer any of your questions if you call. I wouldn't even consider buying any other brand than Spikes.
You can see the new billet lowers and the newest billet upper here. I believe these will be available for order within the next 3-4 weeks.
Spike's Tactical Billet upper and lower - AR15.COM