Does anyone out there have any suggestions for an upgrade for the 10/22 rear sight? I had upgraded one of my old 10/22s about 10 years ago with a weaver peep sight that moved the sight base from the middle of the barrel to aft of the trigger, which provided enhanced accuracy due to a longer sighting radius and better sights. I sold that rifle a while back and can't remember where I had bought that weaver peep sight. Has anyone else come out with something better since then for the 10/22 for upgraded adjustable rear iron sights?