I think the LRI mount would be the way to go, I was thinking about one for my LRH too. Not alot of material in the forend so guessing they would need to add some epoxy where the EFR would be mounted. @LongRifles Inc.
It’s the Trijicon RM65. Works good! I get half the window viewed over the NX8 turret. It’s still 100% usable and works well. I have a Reptilia 2.5mm Riser plate coming to get it a small bump and should have close to full window view after that