AmeriGlo brings a clear advantage to your shooting experience on and off the range. AmeriGlo Optic Compatible Sight sets provide a precise, elevated co-witness sight picture for slide-mounted red dot optics and suppressors and serve as reliable back-up sights. This 3XL Tall model has a green tritium front sight with white outline and green tritium rear sight with white outline and black finish. It is compatible with all Glock Gen 1-5 models except 42,43,48. Fits Glock MOS slide. Compatible with Holosun 407/507/508T, Trijicon RMR/SRO, EOTech EFLX footprints.