Those of you who own the UTC thermal devices no the factory mount puts the optic centerline at 1.31", while the standard for pretty much all military clip-on devices is 1.5". I got a request to create a riser to put the UTC on 1.5", so I made an aluminum block to go between the throw lever and the device. Recoil lugged to match the LaRue interface. Since I have material and the dimensions, if anyone is interested in having one made let me know. They will be $40 shipped.
I can't say it's critical to get on center, but it will help minimize any offset and perhaps better center the screen in your optic.
I can't say it's critical to get on center, but it will help minimize any offset and perhaps better center the screen in your optic.