AmeriGlo Combative Application Pistol Sight fits Glock 17,19,22,23,24,26,27,33,34,35,37,38,39, Green/Orange For Glock 17,19,22,23,24,26,27,33,34,35,37,38,39 Front width 0.140 inches Orange square outline front Orange line (non-tritium) rear