Ameriglo’s Ghost Ring sights deliver immediate front sight acquisition with a unique design. These sights are an alternative to traditional post-and-notch sights by utilizing an aperture-style rear sight. This configuration naturally leads the shooter’s eye directly to the front post, and tritium lamps in both the front and rear sights allows for accurate shooting in low light conditions. Features: Aperture-style rear sight – leads shooter’s eye directly to the front sight post Tritium lamps in front and rear sight Available for majority of Glock models Ameriglo Ghost Ring Green Tritium w/LumiGreen Outline Front, Green Tritium Rear Night Sight for Glock Gen 1-4 17,19,22-24,26,27,33-35,37-39 GL-325