Holosun HE512T-GR 1x 30mm Red Dot - Green 2 MOA Dot & 65 MOA Circle - The HE512T-GR is a versatile open reflex optic designed for long gun applications. HE512T-GR is at home on carbines, PCCs, and shotguns due its durable design. HE512T-GR features Grade 5 Titanium Housing and includes a QD absolute co-witness mount (1.41" dot height). HE512T-GR is packed with Holosun innovation including Solar Failsafe, Shake Awake, MRS (Multi-Reticle System), Green Super LED with up to 50k hour battery life, with 10 daylight and 2 night vision compatible intensity settings.