Holosun Technologies, 403B, Micro Red Dot, 2MOA Dot, High and Low Mount


  • 2 MOA on dot 
  • Parallax-free
  • Unaffected by extreme weather conditions
  • Designed for day and night use 
  • Durable construction


Product Description

The 403B is a small compact micro red dot optic. Employing Holosun's LED technology, the lifetime for one CR2032 battery can be up to 5 years. This optic features Holosun's Shake Awake technology that powers the optic on with slight movement of the 403B. It may be installed on various firearms such as shotguns, pistols, air rifles and crossbows. The HS403B is compatible with standard mounts.


Holosun HS403B

  • MANUFACTURER: Holosun Technologies

    MODEL: 403B

    TYPE: Red Dot Closed Emitter 

    FINISH: Black

    WINDOW SIZE: 20mm Diameter

    RETICLE: 2 MOA Dot 


    BATTERY LIFE: 50,000hrs


    DIMENSIONS: 2.45x1.43x1.6

    WEIGHT: 2.82oz

    UPC: 760921087428