What makes the Holosun HS403C so cool? Two words- AUTO BRIGHTNESS. The solar panel on the top of the optic not only functions as a power source, it also controls the reticle brightness, automatically adjusting based on ambient light. The sight may also easily be switched from Auto Mode to Hybrid Mode, allowing the user to manually increase/decrease brightness.

The reticle is a 2 MOA red dot with 10 levels of daytime brightness and 2 levels of night vision brightness. It is a 1x magnification (or rather no magnification), is parallax free and has unlimited eye relief.

The sight window is 20mm. Sight weights 2.82 ounces and is 2.45"x1.43"x1.6"

Operating from the solar panel by default, the sight also takes a CR2032 battery which can last up to 50,000 hours (depending on brightness level and battery quality).

Included with the optic are two mounts- one for flush mounting and one for a taller co-witness mounting. Both mounts will work on weaver and picatinny rails.

Windage and elevation adjustments ar in 0.5 MOA increments.

Included in the box are:

A lower 1/3 cowitness mount

T10 L Key

User Manual

Lens Cloth

Lower Profile Mount

Rubber Cover CR2032 Battery.

The manufacturer offers a Limited Lifetime Warranty on this item.