Meprolight Glock Tru-Dot Adjustable Night Sight Front & Rear Green Tritium Set for G17, 19, 20, 21, 22, 23, 34 & 35

The Meprolight Glock Tru-Dot Adjustable Night Sight Set fits G17/19/20/21/22/23/34/35. This is an adjustable set with green rear and front sight. Meprolight sights, like other self-illuminated products & devices take maximum advantage of tritium light sources - the fail-safe, maintenance-free light sources that don't require any external source of energy and provides up to 15 years of usable light under all weather conditions.