I've built a couple RDS clocks; MOS, and milled. I've used RMR, DP Pro, Shield RMS, and Holosun 508T-V2. The DP Pro has a higher base, so you need really tall sights to co-witness with a MOS. The Trijicon suppressor sights won't clear the base and allow for a co-witness with the DP. Blackbox customs stocks Dawson Precision MOS sights of varying heights and I really like them. You'd be good ok with the trijicon suppressor sights with an RMR on a MOS build, but it depends on how high you want the sights into your RDS window. On another note, I've owned RMR'S and a DP Pro, but now have a Holosun 508T-V2. It's tits and basically exceeds the RMR in every way.
Great info!! Thanks!