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. Fits models: XD®, XD-M®, XD® Mod. 2™, and XD-S™ (Excluding XD-S OSP) USED Trijicon Bright & Tough 3-Dot Night Sight Suppressor Set for Springfield XD SP201-C-600921 - Scrape On Rear Sight USED10242