The Trijicon RMR® Dual-Illuminated reflex sight uses fiber optics and tritium to illuminate the reticle. Fiber optics collect ambient light, automatically adjusting the reticle brightness. In situations with no (or low) light, the tritium illuminates the reticle. This version is popular with shooters who prefer a battery-free solution. The Dual-Illuminated reflex sight’s ruggedized housing is identical to the LED and Adjustable LED models. 
 
9.0 MOA Dot
Chosen by U.S. Marine Corps for use in both the SDO and MDO optics programs. 
 
» Note:  If selecting an RMR for mounting on the Glock® MOS, Springfield® OSP, Walther® PDP, or H&K® VP9 Optics Ready, a Trijicon RMR® mounting kit (AC32064) is required.