This is an adapter to use lenses made for the Krasnogorsk-2 camera on EF-M mount cameras.

It's tested to get infinity focus when the lens us pushed all the way down on the adapter on a MIR 11 2,2/12,5 lens.
If you cannot focus to infinity or you cannot focus on close objects, modify the height (of the top part only) by fractions of millimeter either up or down. Just a tiny change makes a big difference, so adjustments must be done on very, very small increments.

In my case it's a tight fit, so I didn't add any extra fixation element. You can modify the model to include side holes and use fixation screws with hollow heads if needed.