Just some observations if anyone is interested.
Regarding recoil, it is a noticeable improvement. I own and still use an AW in competition having done so for some time and have put 400 rounds through the new AT-X in testing and at the the launch.
The perceived recoil with AT-X is the biggest difference, particularly shooting of barricades or with bipod, much less muzzle flip due to lower bore hight pivot and what you do feel is straight back, sight picture is easier to maintain and you can adjust the butt pad very high in shoulder which helps recoil mitigation.
As terry said combined with a decent brake like the Valkyrie one fitted to the rifles at the launch it makes for a very shootable platform.
Trigger is very good and can set it up how you like.
Regarding the stock adjustability, I can’t see any need for quick stock adjustment on rifle like this and that’s why it’s not fitted, set and forget, I do not see any need to adjust it on the move.
Modularity of AR15 type pistol grip is useful, personally I would swap out the pistol grip for a 90 degree one or Ergo grip.
It’s an impressive package.