The Holosun HE509T-X2 is an enclosed reflex sight built with a Grade 5 titanium housing and multilayer reflective glass for a sealed, durable optic package. The gold Multi-Reticle System offers a 2 MOA dot, a 32 MOA circle, or a combined reticle, with automatic brightness control supported by Solar Failsafe. Shake Awake with Lockout Mode helps manage power and prevent unintentional setting changes. It runs on a side-tray CR1632 battery rated up to 50,000 hours and includes an RMR-to-509T adapter plate.