The HE403B-GR-FDE is a 20mm micro sight designed for rifle and carbine applications. HE403B-GR-FDE features Holosuns Green Super LED with 50k hour battery life, 10 daylight and 2 night vision compatible reticle intensity settings. Its housing is made from 6061 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 Shake Awake technology, digital buttons for setting changes, rubber lens covers, and a side-mounted battery tray for the 2032 battery. HE403B-GR-FDE is a versatile sight for users of all levels. IP67 waterproof.
Specifications
- Manufacturer part number: E403BGRFDE
- Model: 403
- Magnification: 1x
- Color: Flat Dark Earth
- Reticle: 2 MOA Green Dot
- Material: Aluminum
- Firearm Type: Carbine / Rifle
- Mount Type: Picatinny Rail
- Run Time: 50,000 hrs
- Adjustment Size: 50 MOA
- Objective: 20mm
- Brightness Settings: 10 Day / 2 Night
- Eye Relief: Unlimited
- Switch Type: Push Button
- Battery Size: CR2032
- Windage Adjustment: 50 MOA
- Length: 2.57″
- Proofs: Waterproof
- Parallax Adjustment: Parallax Free
- Bulb Type: LED
- Dot Size: 2 MOA
- Elevation Adjustment: 50 MOA
- Height: 2.70″
- Optic Coating: Multi-Coated
- Width: 1.59″
- Weight: 2.82 oz
Compatibility
Mount: Picatinny Rail. Designed for carbine / rifle use.
Genuine Holosun product, manufacturer part number E403BGRFDE. New in the manufacturer’s packaging with full factory warranty. Usually ships within 1-2 business days.






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