Features integrated mount to achieve 1/3 lower co-witness sighting. The HS403B has a 20 mm lens designed for rifled and AR pistol applications, but can easily be adapted for air guns, shotguns and crossbows. The 403B is a small, compact micro red dot optic. Employing Holosun’s LED technology, the CR2032 battery can last for 5 years. The “Shake Awake” technology powers on the sight with slight movement. The HS403B is compatible with standard mounts, in addition to the 1/3 lower co-witness mount that comes standard.
OPTICAL DATA |
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Light Source | LED |
Reticle | 2MOA Dot |
Parallax Free | Yes |
Unlimited Eye Relief | Yes |
Magnification | 1x |
Multi-Coatings | Yes |
Integrated Laser | No |
ELECTRONIC DATA |
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Battery Type | CR2032 |
Battery Life | Up to 50,000 Hours |
Brightness Setting | 10 Daylight & 2 NV Compatible |
MECHANICAL DATA |
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Housing Material | 6061 Aluminum |
Surface Finish | MAO |
Housing Color | Black |
Adjustment per Click | 0.5 MOA |
W&E Travel Range | ±50 MOA |
Storage Temperature | -40℉ - 158℉ |
Working Temperature | -22℉ - 140℉ |
Submersion | IP67 |
Vibration | Up to 1000G |
PHYSICAL DATA |
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Window Size | 20mm Diameter |
Dimension (in) | 2.45 x 1.43 x 1.60 |
Weight (oz) | 2.82 |
Manufacturer's Part No. | HS403B |
See Review of the Holosun 403B in RedDot Sight Reviews