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Holosun HS403B-FDE

Availability: Temporarily out of stock – as a registered customer you can turn on the notifications and be informed when the item is restocked



Small compact red dot sight. Employing new LED technology, the life time for one CR2032 battery can be up to 50,000 hours. The power will be switched on with 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, wil be perfectly compatible with the standard mounts. 

- 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 

- Reticle: 2 MOA Dot Size 

- Light source: LED 
- Parallax: Parallax Free 
- Eye Relief: Unlimited 
- Coating: Multi-layer coating for all lens 
- Magnification: 1X 
- Lens diameter: 20 mm 

- Battery: CR2032 (not included) 
- Battery Life: 50,000 hours. Base on setting 6. 
- Auto Shutoff: 8 Hours 
- Brightness Setting: 10 DL & 2 NV compatible 

- Housing Material: Aluminum 
- Housing Finish: PEO/MAO housing finish 
- Housing Color: Black 
- Adjustment per Click: 0.5MOA 

- Storage Temperature: -40°C to 70°C 
- Working Temperature: -10°C to 50°C 
- Waterproof: 1 m 

- Dimension: 67 x 38 x 37 mm with high mount 
- Weight: 124 g with high mount 

Set includes: 
- HS403B with 1/3 Co-Witness High Mount 
- CR2032 battery 
- Low Mount 
- Rubber Lens Cover 
- Spare Battery Tray 
- Torx Key 
- Aiming Dot Adjustment Tool 
- Microfibre Cloth 
- Box made of Plastic 

Additional Information

Product-ID H1463
Product code 78003705
Weight 0.5000

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