The Holosun EPS-CORE-RD3 delivers full-size EPS viewing performance in a compact RMSc-footprint optic with a clean 3 MOA red dot. Its enclosed design protects the emitter from dust, debris, and weather, while a forward-facing light sensor automatically adjusts brightness as conditions change. Powered by a side-tray CR1620 battery rated up to 50,000 hours and backed by Shake Awake and Lockout Mode, the EPS-CORE-RD3 delivers dependable, carry-ready performance in a slim, purpose-built package.