The Trijicon RCR Adjustable LED 3.25 MOA Red Dot Sight in Hard Anodized FDE is a premium, fully enclosed electronic reflex optic engineered to survive the most punishing military and duty environments. Constructed from ruggedized forged 7075-T6 aluminum, its distinct housing shape deflects the shock of direct drops and impacts away from the tempered glass lens. This advanced closed-emitter design prevents rain, mud, lint, and snow from blocking the internal LED, ensuring a crisp aiming point under any conditions. It direct-mounts seamlessly to standard Trijicon RMR footprints using a patented system of side-tightening capstan screws, completely eliminating the need for aftermarket adapter plates. Equipped with upgraded top-loading battery electronics, it functions continuously for up to 6 years on a single battery cell without requiring you to unmount or re-zero the optic.