as of 11-15-2010 its now over 40,000 rounds with the factory barrel.

heres the arfcom thread that pat rogers (owner of EAG tactical, where they did all of this testing at)

http://www.ar15.com/forums/topic.htm...=196990&page=1

they sent me a copy of the SWAT article with my upper when I ordered it a few months ago.