Fits Glock Models: 17, 17L, 19, 22, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 37, 38 and 39 Three-dot iron sights that increase night-fire shooting accuracy by as much as five times over conventional sights Housed in a metal body and cushioned within silicone rubber No need for batteries Each lamp is capped with a sapphire jewel to help evenly distribute the light while protecting the lamp from solvents and puncture