I'm going to start an AR build this year. I was just down visiting my inlaws, and my father in law was giving me a tour of his safe which, aside from some other goodies, includes 3 ARs, two of which he built from the ground up. I can't afford a new rifle off the rack right now, so I'm convinced it's time to build. Itll take a while, but what the hell, ive got time. I was thinking SBR and wondering if I should go 5.56 or 6.8. I've gotta start with the stripped lower. Are they all essentially the same? What do you guys like?