I hate to be a pessimist, but these are awful. - Trijicon ACOG 4x32 Flip Caps for Objective and Eyepiece TA94 and TA95

I saw all the reviews about how tight these are but got them anyway. They're awful. Getting them on is hard but that's not the problem...once you have them on, they're so tight that the shape distorts such that the covers will either be very hard to close or won't stay closed at all. I would have gladly paid more for a better product. Look for something else folks (and good luck finding some caps that can flip all the way back and against your optic, rather than sticking straight up like Cameron Diaz's hair in "There's Something About Mary."