I noticed this over at slickguns, could make a heck of an option for folks hunting in shotgun/pistol zones... The upper looks like pretty standard stuff but when you factor in the Aero Precision complete pistol lower with the SIG brace it seems like a pretty good option for someone who is not inclined to roll their own.
http://www.slickguns.com/product/radica ... h#comments
Description:
For $599.00 + shipping, you get a complete AR Pistol!!!
We won't put this on our website, you'll have to call the store for this special. (281) 207-8788, Mention "the big guy sent you" and they'll know exactly what to do.
You'll receive: A Complete Upper in 7.5" 8.5" or 10.5" in 556 or 300 AAC with BCG and Charging Handle, our Pistol Kit w/ Sig Tac Brace, an Aero Precision Lower with our RF LPK, a Milspec Grip and a 30 Round PMAG (if your state allows).
http://www.radicalfirearms.com/default.asp
*Shown in this pic: 10.5" 5.56 barrel, and 7.5" 5.56 Barrel