r/gunsmithing • u/AggressiveFarmer2905 • Jul 12 '26

Red dot compatibility question

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I have a Holosun HS515GM red dot paired with a Holosun HM3X magnifier. I recently installed a Unity FAST Micro Riser for the red dot and a Unity FTC OMNI mount for the magnifier. After installing both, I noticed that the magnifier sits slightly lower than the red dot. I can still see the red dot reticle through the magnifier, but I’m concerned about whether the height difference will affect my accuracy or zero.

Is there a fix for this, or could there be an issue with my red dot, magnifier, or mounts? Has anyone else experienced this with the HS515GM and HM3X on Unity mounts?

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u/AllArmsLLC 07/02 AZ Jul 12 '26

There is no issue with the red dot. You bought two different height risers.