The front sight and rear sight from Meprolights will remain black since you can't plate the sights with their tritium lamps installed. There is a work around for this, but it is costly. You'd have to NP3 plate the OEM sights, then send those out to Tooltech to have Trijicon lamps installed. I think they charge a ridiculous amount, like 250 dollars. The hood of the front sight and the rear sight housing are going to be plated on this one.
It will end up looking like this one I did a while back, but the Trijicon RMR's that are nickel boron plated aren't readily available anymore.