Designed for compact EDC handguns, the Holosun EPS-Core Pistol Reflex Sight features a full-sized EPS viewing window in a slim and lightweight package. The enclosed design and rugged 6061-T6 aluminum housing helps protect the unit from dust, debris, and environmental conditions. A forward-facing light sensor automatically adjusts the 3 MOA dot reticle to provide the ideal aim point when light conditions change. Shake Awake technology brings the unit to life instantly and shuts the dot down when it detects inactivity, helping the single CR1620 battery last up to 50,000 hours. Manual brightness control with 8 daylight and 4 night-vision settings and lockout mode provide full control when you want it. Designed for compact and subcompact pistols Full-sized EPS viewing window in a slim and lightweight package Fits Trijicon RMSc footprints Enclosed design for added protection 3 MOA dot Automatic and manual brightness control 50,000 hours of battery on one CR1620 battery 6061-T6 aluminum housing