When I had an RMR on my G19, I bought a separate slide and had it milled and used that. That way I could swap between the 2 slides, and it wouldn't hurt when selling them separtely later.
Originally Posted by RiverRatMatt
Well, I think I'm going to backburner this for now and upgrade my iron sights.
If you're going to mill your slide and get a RMR, you're going to need taller suppressor sights. Otherwise the factory sights are way too low and will not be anywhere near your red dot when you're trying to align them up. If you know for sure what you're going to, spend the money once and get the right sights for your application.