The Holosun HS407C-X3-RD2 modernizes the proven 407C platform with a reinforced housing, refined brightness controls, and a crisp 2 MOA red dot engineered for everyday carry, duty use, and consistent range performance. Built around the industry-standard RMR footprint, it delivers a streamlined, low-profile mounting solution that integrates cleanly with optic-ready slides. Designed for real-world reliability, the 407C X3 combines automatic brightness adjustment via a forward-facing photodiode with Holosun's Solar Failsafe(TM) system-keeping the dot properly regulated as lighting conditions change. Manual controls with brightness memory and lockout functionality give shooters complete authority when preferred. The Holosun HS407C-X3-RD2 is a durable, RMR-footprint red dot built for everyday carry, duty use, and range performance, featuring a reinforced 7075-T6 aluminum housing and a crisp 2 MOA aiming dot for fast, precise acquisition. It incorporates Solar Failsafe(TM) with automatic brightness adjustment via a forward-facing photodiode, along with manual controls that include memory and lockout functions for user preference. Powered by a side-loading CR1632 battery rated up to 100,000 hours and enhanced by Shake Awake(TM) technology, the optic delivers extended runtime without removing it from the slide for battery changes. With IP67 waterproofing and 5000G vibration resistance, it's engineered for dependable performance in demanding real-world conditions. Specifications: Reticle: 2 MOA Red Dot Footprint: RMR Housing: 7075-T6 Aluminum Battery: CR1632 Battery Life: Up to 100,000 Hours Brightness Settings: 10 Daylight + 2 Night Vision Solar Failsafe(TM): Yes Shake Awake(TM): Yes Waterproof Rating: IP67 Vibration Rating: 5000G Finish: Black Hard Anodized