Holosun – HS403B – 1 x 20mm 2 MOA Red Dot Reticle – Black Anodized
- The Holosun HS403B is a high-performance 20mm micro red dot sight purpose-built for rifles and carbines.
- Compact yet feature-rich, it delivers fast target acquisition and unwavering reliability in any environment making it ideal for beginners and seasoned shooters alike.
- Powered by Holosun’s Red Super LED, the HS403B offers up to 50,000 hours of continuous use on a single CR2032 battery.
- It comes equipped with 10 daylight brightness settings and 2 night vision-compatible levels, allowing for quick reticle adjustments in any lighting condition.
Specifications:
Physical Specs:
- Window Size 20mm Diameter
Mechanical Specs:
- Housing Material 6061 T6 Aluminum
- Surface Finish MAO
- Adjustment per Click 0.5 MOA
- W&E Travel Range 50 MOA
Environment Specs:
- Storage Temperature -40°C – 70°C
- Working Temperature -30°C – 60°C
- Submersion IP67
- Vibration 1000G
Others:
- 2 MOA Dot Reticle
- Up to 50,000 Hours Battery Life (Setting6)
- 1 2 Brightness Setting: 10 DL & 2 NV Compatible
- Convenient Tray Battery Compartment
- Parallax-free & Unlimited Eye Relief
In the Box:
- Lower 1/3 Cowitness Mount
- T10 L Key
- User Manual
- Lens Cloth
- Low profile mount
- Rubber Cover
- CR2032 Battery











