https://uploads.tapatalk-cdn.com/201...cab68ae141.png
Pic from Aimpoints web site. Shows what looks like an undercut for a rail. The mounting screw also appears to move something towards the optic centerline, like one sees on scope bases. Machining could be done depending on how much rail is required. If you can make the rail shorter than the pocket it wouldn’t be hard to do. If the rail needs to run the entire length of the optic, you may need some clearance.