I don't know why you would need one really, there isn't going to be much recoil.
That said if going with one I'd be really happy with a can to do double duty.
We used solid bottom A2 flash hiders in our rapid fire ARs for NTIT, and if legal would have used brakes too, simply to speed up the next shot by less recoil and less muzzle rise, but for just recoil in 223 or even in 308 they were never needed for "body" abuse issues.
And if not that, since you are using it for recoil issues, I'd get caliber specific rather than do it half azz
I've been pleased with Vais for customers guns over the years.
