Suarez does the 226 and CZC has done 75s that have cowitness irons. Both utilizing the RMR for the RDS.
Still, not ideal IMO.
...
I would HIGHLY recommend having a slide milled for the exact optic you want to mount on it and avoiding any adapter plates, like many of the optic ready pistols on the market use.
Doing away with mounting plates usually means the optic will sit lower on the slide. It also leaves 2 less screws to potentially loosen. The adapter plate usually screws into the slide, then the optic into the plate. So, if the screws for the plate to slide loosen, you now have to remove the optic to tighten them. Sort of stupid...
Having the slide cut for the exact optic you are using will ensure a tight fit to the slide. This alleviates some of the gforce that the mounting screws take while your slide slams back and forth.
Aside from fit in the hands and reliability, the optic sitting as low in the slide as possible is one of most important factors in choosing a RDS host, IMO. Glocks are going to be one of lower attainable cuts available. The RMR sits pretty low on the P10C as well. The RMR can be mounted to a plethora of guns these days...
Talk with Doug over at
ATEi. He does slides cut to your optic and can do more than just Glocks. He can be PM'd on here as well; username=dougwg.