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 RM02 is an LED sight powered by a standard CR2032 battery. Housed in rugged forged aluminum, the RMR is extremely tough yet lightweight. New easy-to-use adjusters with audible clicks allow for quick windage and elevation adjustments. The Trijicon RMR is tougher than any alternative and suitable for military, law enforcement and hunting applications. Comes with a RM34 mount for use on AR-15 platform rifles. The RM34 features a large thumb screw and alows for 1.4" of height to the center of the RMR. Mfg: Trijicon