olympic for the upper due to an exceptional deal (friend can get me dealer pricing) and lower is the cncguns/khalan billet lower (was complete including lpk and stock).  there are a couple other people that make the uppers using a 9mm slickside upper but the bolt is always oly, as i think they are the only ones that make that part - other barrels are finally starting to show up slowly so oly won't have the monopoly on the different pistol caliber uppers like 45, 10mm, etc. 
i still can't believe 5.56/.223 is still sooo expensive....but i will probably pick one up in 5.56 in the next few months in case we lose the chance forever w/ the next election....that one will probably be a mega lower w/ a lmt upper 
