Getting a 8 moa reticle I think is going to be your hardest thing. I don’t think I have ever met anyone at any match or RDS training I have been at with something that big. And that is probably who you would be buying from used. Is there a reason you need something that large? Some of the other national forums regularly have smaller moa RMRs for sale in that price range. Bought a RMR06 for $325 from one of them.I want to purchase a red dot sight for a PSA Dagger pistol slide. The slide is an RMR cut. What I want is an 8 MOA with a red reticle that does not cost an arm and a leg. In other words I can't afford a Trijicon. I'd like to keep it under 300 bucks if at all possible. I have searched the internet until I'm blue in the face. Does anyone have a suggestion for a decent optic at a reasonable price?