I have been a lurker for a while. I have read all the posts that pretty much have to do with a AR in 308. I want to build one, but I want to do it slowly. I have build a few ar's in 5.56 and I got rid of them all and bought a 6920. Now I am ready to start buying components in 308. All I know is I want to be able to use magpul mags and I want a 20 inch barrel, I guess a 22 isnt more accurate than a 20. other than those 2 requirements I am only focused on accuracy. Where should I start looking for a stripped upper and lower? I found the Ma-ten deal for both for under 500 bucks, is there anything else out there?