Holosun Technologies 512T, Green Dot, 1X28MM, Black Finish, 2MOA Dot with 65MOA Circle, Titanium Housing HE512T-GR The HE512T-GR is an enclosed reflex optical sight designed for rifle and carbine applications. Features include a Titanium housing, Holosun's Green Super LED with up to 50k hours battery life, Multi-Reticle System, Solar Failsafe, and Shake Awake.