The Holosun 507C-X3 is an open reflex pistol sight built with a rugged 7075-T6 aluminum housing and the widely used RMR footprint. Its Multi-Reticle System lets shooters choose between a precise 2 MOA dot, a 32 MOA circle, or a circle-dot combination for faster target acquisition. Solar Failsafe and Shake Awake technology help maintain dependable operation, while the side-loading CR1632 battery tray allows battery changes without removing the optic. With up to 100,000 hours of battery life, an IP67 waterproof rating, and Lockout Mode, the HS507C-X3-RD is well suited for everyday carry, duty use, and range shooting.