Ameriglo Tritium Ghost Ring Handgun Sight for Glock 42/43/43x/48 Green Rear Green with White Front 46F8A554. This unique design utilizes an aperture-style rear sight with two tritium mini-dots and a bright tritium front sight which leads the eye to automatically center itself in the rear ring while focusing on the front sight. The result: immediate front sight acquisition. Fits Glock 42/43/43X/48 Features of Ameriglo Tritium Ghost Ring Handgun Sight for Glock 42/43/43x/48 Green Rear Green with White Front: Immediate front sight acquisition Unique aperture-style rear sight Two tritium mini-dots Bright tritium front sight Alternative to traditional sight design Package Contents: Ameriglo Tritium Ghost Ring Handgun Sight for Glock 42/43/43x/48 Green Rear Green with White Front Ameriglo GL-4125: Tritium Ghost Ring Handgun Sight for Glock 42/43/43x/48 Green Rear Green with White Front 46F8A554