Holosun HS403C Red Dot Sight

11 Brightness levels
Multiple anti-reflective coatings on all air-to-glass surfaces increase light transmission.
Non-critical eye relief for rapid target acquisition
O-ring seals prevent moisture, dust and debris from penetrating for reliable performance in all environments.
Skeletonized Mount Included
Up to 7,000 hours of battery life on the medium brightness setting

HS403C Red Dot Sight