I owned it, used it, and sold it. IT worked just fine, I just decided that the best way to shoot the MKII was with the sights that it came from the factory with.
Be aware though, that the finish does NOT MATCH the stainless of the MKII, because I believe the mount is aluminum. THe mounting mechanism is quite clever, using the dovetail for the original sights.
It's a great solution if you want a no gunsmith application for a red dot or something similar.
REV