*Incredibly fast target acquisition with the parallax free design. Incredibly easy to sight-in. Holds zero even after thousand of shots.*Whether you are shooting at dawn, dusk, night, or the middle of the day we engineered this to allow for 4 different reticle types too choose from as well as red or green color settings for all reticle variations.*This reflex sight was engineered to co-witness perfectly with iron sights. TACTICON brand iron sights work the best with this optic.4 Reticle TypesRed and Green40mm@100yds: 90ft45 Degree Offset Mount