So I finally got around to getting my PS90 chopped on a Form 1 last week (after 8 years of owning it!) and I've decided the factory sights are terrible. What and where is everybody using as far as a Tri-Rail? I have a Trijicon RMR that I think I'm gonna replace the factory sights with.

p.s. After shooting it, both without and with my suppressor, I don't know why I waited to long. This thing is FUN!

Either Design Machine or TROS, those are the two best mount makers for the PS90 that I know of. I use the TROS low mount and mini ACOG mount on my two PS90's but don't have the side rail offerings. They work great.