I picked up a Ruger Mk IV 5.5" with the threaded barrel thinking "can" down the road some time. Burris Fast Fire III or Holosun, not sure which yet. That will be a while. I might accuracy test it with a conventional scope first to see what it is worthy of in the way of other optics. I just stuck my old 2-7X Simmons gold medal pistol scope on a 4-5/8" barreled single six. (Ruark said "use enough gun", Tom says "use enough scope." :))
Anyone who thinks there's two sides to everything hasn't met a M�bius strip.