Do yourself a favor and get the new Holosun SCS which mounts DIRECTLY to the mos screw holes in the slide. The Green Dot is easier to see than red, no battery change issues, and you can use the factory night sights!

I recently mounted one on my G22-5 and it is outstanding!

Currently available at Midway for $349.

Link to a post I wrote on the topic.....

http://bushcraftusa.com/forum/threa...ts-is-here-holosun-scs-mos-green.331384/

"The difference between adventure and disaster is preparation"
"Dangerous Game Hunting........because golf, football and baseball only require one ball"