IOR Valdada M1 or M2 with either the MP9 nato or Dragunov Reticle. There is also a CQB reticle available but I have no experience with that one. Ran both of the others on my M1A and never had any problems. 4x24mm/30mm tube, superb glass, Illuminated reticle, built like a tank. Only downside for me was they have eye relief on the order of an ACOG. Pretty short but would not be a problem on a AR like it was on my M1A. They run about 700-800 or so new, used ones go for about 350-500. Cannot say enough about the Dragunov reticle. Zero the rifle/scope, reticle does all the work from there on out. Range finder is spot on also.