The Foolproof (or just FP now) also needs the stock inletted for the elevation slide. The WGRS, Williams Guide Receiver Sight mounts into the two rear scope mounting holes and sits completely on top of the receiver. Elevation changes are handled by sliding it up and down a ramp, exactly like the Remington stock rear sight.
www.midwayusa.com sells a kit consisting of both WGRS and a Firesight front sight of the correct height.
I had a WGRS on my 700 .30-06 back around 1976 and 77. Since it does not have click adjustments it is a bit more challenging to sight it in exactly but it�s not a big deal. It uses lock screws to hold everything in place and they work well, even under .30-06 level recoil. The BDL comb works well with that lower sight, if you have a CDL or SPS I couldn�t say how that would work.
I�m a big fan of peep sights. Wish I still had the 20-something year old eyes I did back then or I�d still be using them on high power bolt actions. They really improve the balance and handling and you can grab any bolt action completely around the middle for carrying. They do limit your range to how well your eyes can resolve the target, but most game is still shot within 200 yards, modern sniper rifles notwithstanding, so you aren�t limited all that much. I remember that jackrabbits, even running ones, were in serious danger out to 200 yards.