Holosun AEMS 21301 features our Red Multi-reticle System with Solar Failsafe and Shake Awake technology. The housing is made from 7075 aluminum and is black anodized for durability. This enclosed reflex optical sight designed for rifle and carbine applications. Features include Holosun’s Super LED with up to 50k hour battery life, Multi-Reticle System, Solar Failsafe, and Shake Awake. Includes lower 1/3 cowitness mount.