[jkv45]

Any other way to put a red dot on a P22?
Mine has a rail underneath the barrel, like where typically folks put gun lights on their pistols.

Ran across this article on mounting a red dot on a pistol -

4 Ways to Mount A Pistol Red Dot

The concept of the pistol red dot has been around forever, and today we are going to look at the 4 different ways you can mount one.

gatdaily.com

Not the best option, but for a .22, you may be able to get away with the dovetail mount plate.

 

[jkv45]

Which of those in that link do you use?
Does anyone know of a dove tail mount for P22?

I don't have optics on any of my pistols, but if I wanted to put something on my P22 I'd probably go with the dovetail mount.

You will most likely have to cross-reference the dovetail dimensions of the P22 with other more common pistols to get the right one.

This site has one listed for the PPQ22, but they say specifically they don't make a mount for the P22 -

Dovetail Red Dot Mount

Discover the best red dot sight and red dot scope at Mounts Plus. Enhance your shooting accuracy and speed with our top-quality selection of red dot sights.

www.mountsplus.com

There may be something available that matches the dimensions, if you can come up with them.

 

[jkv45]

I would think matching the dovetail specs of the P22 with a more popular pistol, and using a plate would be the easiest solution, but it would take some research and possibly some modifications to the plate.