This item is a Tall Picatinny rail mount for the Trijicon RMR (Ruggedized Minature Reflex).
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 RM01 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 new Trijicon RMR is tougher than any alternative and suitable for military, law enforcement and hunting applications.
WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov