now is the time to buy... Classic Arms has them for 475 at the moment
From what I have read on many boards, Classic Arms is a pretty reputable place with good customer service. Hopefully the conversion won't be a "hack job". I placed an order for one of these, I'll report back once I get my hands on it. At this price, I thought I'd skip the hassle of converting it myself, since time is limited for me at the moment.