Developed to improve precision and accuracy with any style or caliber of weapon, the Trijicon RMR (Ruggedized Miniature Reflex) is designed to be as durable as the legendary ACOG. The RMR Dual Illuminated Reflex Sight is a battery free sight, featuring Trijicon fiber optics and tritium. The Dual-Illuminated RMR 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 RM04 family has an amber 7.0 MOA dot, which is simple to use and easy to find. The 7.0 MOA dot is popular for those wanting our smallest aiming point in our Dual-Illuminated models. 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.