Sight adaptor for a telescope, 120mm tube outer diameter.

Adapter for mounting NATO rail style reflex sight to a telescope. The STL is for tube outer diameter of 120mm. Uses build123d, you can modify telescope_sight_mount.py and re-generate for a different diameter.

Other parts: 4x m3x16 (or longer) screws, 4x m3 hex nuts.

You can use the screw to pull the nut into its hole if the fit is too tight.