· Premium Member
That is one problem I have. I have a lazy eye and cannot keep both eyes open with the red dots. They do work fine with one eye, I suppose you give up fast target acquisition though.If your carbine is going to be a truck gun I would suggest leaving the stock iron sights on it, no battery to go dead, does not have to be turned on and less likely to be damaged bouncing behind the seat. I have used both the 30mm & 42mm from BSA and Simmon's and I prefer the Simmon's as they offer better quality for the same money spent. Size wise it does not really matter as one looks past the sight with both eyes open and only the red dot should be seen on target. If you see the sight then your focusing your vision wrong.