Just an addendum to my previous post, since I agree that there are lots of folks out there with cheaper ARs that don't shoot them and post too much propaganda about theirs: I shoot mine as much as I can afford to. Sometimes that's 500 rounds a month, sometimes it's not. I would estimate my round count in the neighborhood of 8-9000, conservatively. I know that's not a whole lot, but so far mine is GTG. Your mileage may vary, and I would rather have a Colt or another top tier weapon, but it's the one I got.
My reading of history convinces me that most bad government results from too much government.~ Thomas Jefferson