I have a 226 elite 9mm,,,,,,it came with the MMC adj. night sights. I have installed a #8 TFO and a dawson #8 fiber optic front sight @ .160 sight height. Both of these have worked great with the MMC adj. rear sight, with plenty of adjustment left up or down.
The cool thing about the MMC is,,,, you adjust windage by just loosening the set screws,,, there is no need for a punch or a sight pusher,,,,it will slide back an forth rather easily, just be sure an use some blue lock tight on the set screws or they will loosen up on you
Also, by using the #8 TFO or dawson, you will get the same combat sight picture as factory,,,, Sig CS told me that the MMC is adj. for #7,8,9,,,i think you could use a #6 also.... hope this helps.