I have one day of shooting with it. Grouped fine, feels like a Bravo behind the rifle- until it is fired.
Identical rifles- T3x Lites, 308win, barrels cut to 18”, UM OTB suppressors.
Echo-
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ROKStok-
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Shooting side by side with a KRG Bravo, ROKstock, and the Echo- the Echo was just not pleasant.
Probably the best way to describe it was that you feel all the vibrations during recoil- and they all get transferred to your face, shoulder, and hand. It rattles.
The feeling during recoil was so different from the Bravo that I thought something had to be loose or broken on the Echo. But No.
Reticle movement during recoil was 3-4 times as much as the ROKStok shot side by side.
I am going to look at adding a leather cheek pad and see if that helps it any. I will shoot it quite a bit more, but as it is- it may be ok on a 223 or maybe a smaller 6mm, but I would not choose it for anything with recoil.