Name: HOLOSUN HE403B-GR
SKU: 125623

- Overview -

HE403B-GR is a 20mm micro sight designed for rifle and carbine applications. HE403B-GR features Holosun’s Green Super LED with 50k hour battery life, 10 daylight and 2 night vision compatible reticle intensity settings. Its housing is made from 6061 aluminum and includes both a lower 1/3 co-witness mount (1.63”) and a low mount (.75”) for low-comb height rifle applications.

Additional features include Shake Awake technology, digital buttons for setting changes, rubber lens covers, and a side-mounted battery tray for the 2032 battery. HE403B-GR is a versatile sight for users of all levels.

Items Dimensions (in inches)

In the Box

Lower 1/3 Cowitness Mount
Low Profile Mount
T10 L Key
Rubber Cover
User Manual
CR2032 Battery
Lens Cloth

- TECH & FEATURES -

Shake Awake™
Super LED
Multilayer Reflective Glass

Shake Awake™

Shake Awake Technology is a standard feature on all current model Holosun optics and serves to extend battery life by deactivating the optic’s LED while not in use. A highly sensitive motion sensor works to detect motion keeping the LED powered on during use. This allows for duty or concealed carry with seamless operation throughout your day or shift. At the end of your day or shift when your firearm is stored, the motion sensor will detect a motionlessness state and after 10 minutes (default setting) Shake Awake Technology powers the LED off until motion is again detected. Shake Awake offers settings from 10 minutes to 12 hours depending on the model and can be deactivated altogether if preferred. The slightest touch of the optic instantly reactivates the LED so your Holosun optic is ready when needed.