New AR-15 Upper, Alert Say Uncle!

Apparently there's a new and extra-fancy AR-15 upper almost available from Leitner-Wise. It supposedly eliminates the problem with the exhaust blowing all over the action or whatever. If it's really any good, it'll be my first AR-15 upper, preferably in 6.8 spc, on account of I know nother about the 6.8 spc other than what I've read on the internet, and it sounds pretty good, heh. A good explanation is available here. And here's a pic (not that you can tell)