With the iron sights and the red / green dot reflex sight mounted , a cousin and I went to the range Saturday AM . First off , with bright day light , even under the awning over the shooting tables , the red or green dots are not bright enough to see . UUQÂ® Tactical Holographic Red Green Reflex Scope Sight 4 Reticles So I removed that sight and started to try to zero the irons at 25 yards . POI was about right for elevation , but about at the left edge of the paper target . Did not have enough adjustment on the rear sight , so I started rotating the front sight to the left . Got it with in a few inches of center , but the front sight is noticeably to the left . Looks odd . That is where I stopped for the day . The carbine has a clamp on " compensatory " . I am wondering if that is influencing the POI ? I plan to remove the " compensatory " and leave it at home . Next time I take the carbine to the range . Now , my largest problem with the carbine . I have been told I need cataract surgery . I was having a very difficult time seeing the target & iron sights . I had feared that . That is the reason I purchased the reflex sight . Any suggestions for an " economy " reflex sight that would be bright enough for broad daylight ? I know I could install a small conventional scope , but I am trying to avoid that . Thanks , Wyr God bless PS I was getting around 2" - 3" groups at 25 yards , with my wonky eyesight .