If you are running a Suppressor on your Glock pistol, the XS Sight Systems Suppressor height big dot tritium night sights are just the ticket for getting more hits on target with faster target acquisition and follow up shots. XS Sight Systems Suppressor height big dot tritium night sights are well made and are among the most respected and innovative sight offerings available on the market place today. If you have issues with front sight acquisition, the XS Sight Systems Suppressor height big dot tritium night sights will be a welcome addition to your Defensive pistol. Fits: Glock 17, 19, 22-24, 26, 27, 31-36, 38".