The AmeriGlo GL331 is an extra-large tall set of sights designed specifically to fit a Glock outfitted with a suppressor. Its design elevates the entire sight picture to enable viewing over the suppressor. This set includes a front sight featuring green tritium encased in a vibrant orange circle, and a rear sight created with green tritium and a white outline for enhanced visibility.IMPORTANT: This sight set is incompatible with Glock 42 and 43 models.