The Holosun HE509T X2 Elite Reflex Sight is designed for pistol applications. The HE509T X2 features a titanium housing, Holosun super LED with up to 50k hours of battery life, multi-reticle system, solar failsafe, and Shake Awake RMR. The included RMR adapter plate is not compatible with ZEV or shadow systems style RMR interfaces. FeaturesTitanium housingDesigned for pistol applicationsUp to 50k hours battery lifeMulti-reticle systemShake Awake RMRTwelve brightness settingsConvenient tray battery compartmentParallax-free and unlimited eye reliefIncludes adapter plate, T10 L key, CR1632 battery, and lens cloth