Trijicon HD Night Sight, Fits Glock 42, 43, 43X, and 48, Yellow Outline GL113-C-600784 TRIJICON HD NS FOR GLK42 YLW FRONT: The HD Night Sights were specifically created to address the needs of tactical shooters. The three dot green tritium night sight set's front sight features a taller blade and an aiming point ringed in photoluminescent paint while the rear sight is outlined in black and features a wider U-shaped notch.