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PRODUCT DETAILS Holosun HS403B Micro Red Dot Sight

Holosun HS403B Micro Red Dot Sight

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Product Code: HS403B
Length: 70 mm
In stock
Unit Price: USD$169.99

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Small compact red dot sight. Employing new LED technology, the lifetime for one CR2032 battery can be up to 50,000 hours. The battery is not included! The power will be switched on with a slight movement of the sight. It may be installed on various firearms such as shotguns, pistols, air rifles, and crossbows. The Model HS403B, different from HS403A, will be perfectly compatible with the standard mounts.

Batteries not included due to IATA airline regulations


  • Parallax free optical system, with unlimited eye relief.
  • Minimized obstruction of vision with push button controls and streamlined housing design.
  • Unit will "auto wake" when vibration is detected.
  • Low mount and 1/3 Co-witness mount included
  • Adaptable to Picatinny and Weaver rails.
  • CNC machining with T6061-T6 aluminum housing. 


  • 1x Holosun HS403B Red Dot
  • 1x Allon Key
  • 1x Microfiber Cloth
  • 1x Low Mount
  • 1x High Mount
  • 2x Battery Tray
  • 1x Holosun Key

Disclaimer: All aftermarket upgrade parts require necessary skill or modification to install and assemble, please consult with your airsoft technician if needed.