The March Flip Caps can be locked in a fully open position.
Having the caps lay flat again the scope body prevents breakage and gives the shooter a better view of the target area from over the scope.
FC-41 for Eyepiece of all models
FC-33 for 24mm objective models
FC-51 for 42mm objective models
FC-52 for 52mm objective models
FC-64 for 56mm objective models