Actually muzzle covers are used very frequently. They're simple plastic jobs that shoot off after the first round.
Yes, but when your in the middle of a firefight, after that first round has been shot, and you hit the sand/dirt/mud/drink then what?
Not wanting to argue, just restating my point. I have no doubt that that system is reliable, just would have been nice to see it like the test I have seen for the HK-416 and other platforms.