yup. I find it difficult to get a good hand placement on any 7" rail and not burn my fingers on the FSB. a VFG helps with that but I find the AFG almost useless in this application.
however, with my DD Omega X 12FSP rail, the AFG works rather well, better even than the DD VFG that came with it. it all seems to be a function of where/how you hold the forearm and your physicality.
I don't have experience with the AFG II but don't see any apparent benefits of its features in my application.

