- OVERVIEW -
The HE403R-GD (Gold Dot) is a 20mm micro sight designed for rifle and carbine applications. HE403R-GD features a Rotary switch to select reticle intensity, Holosun’s Gold Super LED with 50k hour battery life, and a 2MOA dot with 10 daylight and 2 night vision compatible reticle intensity settings.
The HE403R-GD housing is made from durable cast 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 rubber lens covers, and a battery compartment integrated into the Rotary switch for the 2032 battery. HE403R-GD 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 -
-
Super LED
-
Multilayer Reflective Glass
Super LED
Holosun Super LED technology includes Red, Green, and our latest Gold Dot LEDs providing options that match various environments and personal preferences including red/green color blindness with our Gold Dot. Super LED technology provides a versatile range of reticle intensity settings from night vision-compatible to daylight bright. Holosun Super LEDs have ultra-efficient power usage creating battery like as high as 50,000 hours on certain models. Our Super Green LED is designed to match the wavelength of light that the human eye is most reactive to.
- SPECIFICATION -

- 2 MOA Gold Dot Reticle
- Up to 100,000 Hours Battery Life (Setting 6)
- 12 Brightness Setting: 10 DL & 2 NV Compatible
- Rotary Switch with Integrated Battery Compartment
- Parallax-free & Unlimited Eye Relief
OPTICAL SPECS
Reticle | 2 MOA Dot |
Light Wavelength | 590nm |
Reticle Color | Gold |
Parallax Free | Yes |
Unlimited Eye Relief | Yes |
Magnification | 1x |
Multi-Coatings | Yes |
ELECTRONIC SPECS
Power Source | Battery |
Battery Type | CR2032 |
Battery Life (Hours) | 100000 |
Brightness Setting | 10 DL&2 NV |
PHYSICAL SPECS
Window Size | 20mm Diameter |
Dimension (in) | 2.75×1.43×1.62 |
Weight (oz) | 3.53 |
MECHANICAL SPECS
Housing Material | Durable Aluminum |
Surface Finish | MAO |
Adjustment per Click | 0.5 MOA |
W&E Travel Range | ±50 MOA |
ENVIRONMENT SPECS
Storage Temperature | -40℃~70℃ |
Working Temperature | -30℃~60℃ |
Submersion | IP67 |
Vibration | 1000G |