Welcome. Sig doesn't do plates like for example Glock MOS. You don't say what 226 you have but is it one that already has a cutout for an optic? IF so then there are 3rd parties that offer conversion plates that might work I don't actually know the footprint of the optic you have (this is just one example I have used none of these...https://outerimpact.com/shop/sig-sauer-p226-pistol-red-dot-adapter-mount-m-r-a/). If its a std 226 slide and you want to use the dovetail then there are people like EGW who have again adapters that might fit your footprint (https://www.egwguns.com/catalogsearch/result/?q=226). I can vouch for EGW as a great vendor but not any of these products.
“So in war, the way is to avoid what is strong, and strike at what is weak.”
Yeah I saw the Glock #1 plate thing in my research, just wasn’t sure if it would work on my P226z I’m totally new to using a micro reflex and everything that goes with it.
Not exactly sure where you are on this. A Glock plate has nothing to do with this. You need an adapter plate from Sig romeo to whatever the heck bushnell micro is. A quick look seems to be its a doctor compatible footprint, but I wouldn't ever use one so its not something I can confirm for you.
“So in war, the way is to avoid what is strong, and strike at what is weak.”