The Holosun EPS-CORE is an enclosed pistol sight designed for slim pistols and concealed-carry setups, combining the larger viewing performance of a full-size EPS lens with a compact RMSc footprint. Its enclosed emitter helps protect the optic from dust, debris, and moisture, while the Multi-Reticle System provides selectable aiming options for either precision or rapid target acquisition. Solar Failsafe and Shake Awake help keep the optic ready as lighting and activity change, and the side-loading CR1620 battery can be replaced without removing the sight.