The rail blank I have would be just flush with the surface after inletting and there should be just about .080 left of wood where the hollow pocket is located. I plan on gluing in a piece of oak the full length inside the hollow pocket just forward of the recoil lug that should be enough to reinforce that area. also my rail is 12" long so I plan on mounting both ends so it will be in solid wood just behind the end of the forearm tip and in front of the action screw.