The Holosun 507-PROMAX-PRS is a reflex sight with an enlarged viewing window and a glare-reducing sunshade for a clearer sight picture in bright light. The Performance Reticle System provides a 2 MOA dot with 8, 20, and 32 MOA circle options that can be used alone or combined. It fits the RMR footprint and includes Solar Failsafe, Shake Awake, and Lockout Mode. Powered by a side-tray CR1632 battery rated up to 100,000 hours, it features a 7075-T6 aluminum housing with IP67 waterproofing and multilayer reflective glass.