After talking the the RA guys I decided to buy a UM barrel. Seems like a real nice barrel. I wrote up a small blurb on my blog if anyone is interested. Oh and keep in mind the target posted was shot using a heavy military trigger with tons of creep.
http://shtfclock.blogspot.com/2012/04/shilen-ultra-match-ss-ar-15-barrel.html
http://shtfclock.blogspot.com/2012/04/shilen-ultra-match-ss-ar-15-barrel.html