What we've learned from our award-winning U.S. Federal Government contract sights, we've put into the AMERIGLO Trooper sight set. This three-dot design offers an instant sight picture and proven accuracy you can trust to defend night and day. The Trooper Series comes with a ProGlo front sight and a serrated square notch rear sight with green tritium. GL-821 Green Tritium LumiGreen Outline, Green Tritium Black Outline Serrated SQ Rear. Front Sight Width: 0.140" Front Sight Height: 0.200" Rear Sight Height: 0.276". Fits: Glock Gen 5 9mm/.40/Glock MOS.