The Holosun AEMS CORE features our G2 MOA Dot reticle System with Shake Awake technology. Holosun's Shake Awake Technology shuts the LED off during periods of motionlessness. The amount of time it takes for the LED to deactivate (enter Sleep Mode) is user programmable. The housing is made from pressure forged aluminum and is black anodized for durability. Includes Lower 1/3 Co-witness mount, multi tool, battery and lens cloth.