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 RM05C is a battery free sight, featuring Trijicon fiber optics and tritium. It is housed in rugged forged aluminum, which makes it extremely tough yet lightweight. The easy-to-use adjusters with audible clicks allow for quick windage and elevation adjustments.