WTT/WTS Ameriglo SPARTAN night sights $70
A great set of Ameriglo "Spartan" night sights. A .140" wide front post with a large bright orange dot and bright green tritium insert, paired with a black serrated rear sight. The rear sight is .180" wide with yellow tritium inserts and black liners around the inserts to minimize the rear dots and help focus on the front sight. I had these on my G19, but they will work on any "small" frame Glock.
I would be willing to trade these sights for a set of Proctor Y-Notch fiber optic sights if anyone has a set.