With GLOCK's 6.9mm Night Sight Set you will see your target long before your target sees you. This superior 3-dot tritium night sight will fit GLOCK's 10MM and 45-caliber pistols, among others, providing you with functionality across a range of firearms. Contrasting tritium inserts Simple, quick, accurate target alignment Can be used in all light conditions 6.9mm steel rear sight Get ahead of your target and stay at the top of your game with GLOCK's 6.9mm Night Sight Set. Mfg: Glock