It appears that piston AR's are the new thing or next step. I've read enough about them to understand the potential advantages of the piston system, but with everyone getting in on the 5.56 wagon, I am wondering if it is more of a marketing tool. There's the AK crowd that claims the AR is the jammiest thing since Smuckers; there's the "military buff" crowd that tout all the problems with the M4 and that the army is too cheap to do something about it; and then there's Joe Schmo that wants whatever is new and whatever is on the shelf. Not that these piston uppers aren't quality, but will they REALLY allow us to cram mud in them and then rapid fire a 30rd clip as the AK crowd claims is possible with their beloved spray and pray AK? Wanna kill these ads? We can help!