Gotta burst your bubble. Not gonna fit an RMR and still retain the rear sight.
New guy here.
I had an email exchange with Mark Housel from L and M about this. According to him he can mill in an RMR and a new dovetail for a rear sight. As soon as I save the money, this is what I'm gonna do with a P07.
We could do that as well. You have to mill a new dovetail in front the optic. You can't keep the factory dovetail and put the optic in front.
We've done around 20 P-07's and 09's combined since carry optics was announced so far. Owners had no desire for a rear sight on any of them. Just comes down to how important it is for you I suppose.