AmeriGlo Trooper, Sight, Fits Glk 20,21,29,30,31,32,36, Green Tritium with Orange Outline Front, Green Tritium Black Serrated Rear GL-817 AMERIGLO is committed to manufacturing the highest quality tritium" painted dot" fiber rod" and custom OEM iron sights for the modern hand-gunner. With the largest selection of set options for leading firearm brands" AMERIGLO brings a clear advantage to your shooting experience on and off the range.