X3 For sure.
When I had one of mine done a while back thought they would only mill for the Trijicon RMR.
Primary Machine is what I was looking at and it appears as if they may be a 1 stop shop. I have heard good things about them in the past.
I am thinking Vortex Venom with 3 MOA milled to the rear with Black metal sight in front of it. Red fiber optic on front of slide.
This will be my first time around, any suggestions?
I prefer the rear iron sight in front of the RDS for a few reasons:
1) It protects the RDS glass.
2) It prevents you from smacking the glass when you perform malfunction drills.
3) It allows you to see the dot before anything else. The rear sight will never cover the dot.
I highly recommend you send the slide to Primary Machine, as they mill dozens of slides a week.
As far as sights go, you do want fiber optics in front of the dot. The only thing you want to see is the dot. The irons are there for backup only, so I use black Ameriglo steel sights. As much as you will hear people say "cowitness" sights, the dot never truly sit perfect with the sights. If you try to zero your dot to your sights it will be off.
Brass will hit the optic, so I much prefer the rear iron forward of the RDS.