Trijicon Suppressor/Optic Height Sights are three-dot tritium iron sights that allow shooters the ability to line up their sights in both bright and low-light situations. While standard height sights do not provide an aiming solution when using a suppressed firearm the additional height of suppressor night sights will clear the added height of a suppressor, allowing shooters the ability to line up their sights on target. Additionally, suppressor night sights can be used as back up iron sights with the Trijicon RMR. Green lamps are warranted for 12 years from the date of manufacture. Features : White Front / White Rear & Green Lamps For Glock 42, 43, 43x, and 48 Tritium Phosphor-Filled Lamps Protective Aluminum Sleeves with Silicone Rubber Cushioning Sapphire Jewel for Evenly Distributed Light GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only.