Vortex Optics Venom Red Dot Sights The Venom Red Dot Sight-3 MOA promotes rapid target acquistion while providing a precise point of aim; getting shots down range and on target fast. The Venom's aluminum housing ensures this unit will stand up to whatever you throw at it. High quality, fully multi-coated lenses offer a clean, wide field of view. Power and dot intensity controls are conveniently located on the left side of the sight to choose between 10 brightness levels. The Venom also has an auto-brightness mode that uses an ambient light sensor to control dot intensity if the shooter prefers. 1 MOA windage and elevation adjustments are super sleek and make sighting in a breeze. The top load system makes chaging the CR1632 battery a breeze, as you will not have to remove your sight to change the power source. The Venom Red Dot will fit well on your rifle or shotgun giving you optimal flexibility.