I have a 4-12AO on my 22 lr. It is not a Leupold or a 4200 or a Nikon. It does pass more light than my old Redfield 4-12. It does hold a zero and adjustments are repeatable. They have a good warranty that I have not needed to use. All in all it is a OK scope. Not going to be on a big game or comp. gun though. Varmint rifle sure, no problem.