Quote Originally Posted by GH41 View Post
Everything a MD does it does after the projectile leaves the barrel.
True that, but from their write-up I was scratching my head if the expelled gases are being held in the FH and acting upon the recoil impulse.

Maybe it's my reading comprehension. I looked at it as having maybe some characteristics of, for example, the can-shaped "booster" FH on a Krinkov or something.

I may have been reading it wrong. They may not be implying anything of the kind.