HS403B Red Dot Sight

Miniature enclosed red dot sight from Holosun. CNC-machined from 6061-T6 aluminum alloy with a matte black oxidized coating. This compact sight weighs 160 g and measures 63 × 38 × 37 mm. Thanks to its IP67 rating, it is water- and dustproof as well as shock-resistant. The included low and 1/3 co-witness mount is suitable for Picatinny rails.

The 20 mm lens features a scratch-resistant and anti-reflective multi-coating. A 2 MOA red dot with 1/2 MOA adjustment increments is available. An LED provides two night vision modes and ten brightness levels. With no parallax and unlimited eye relief, the HS403B enables fast and precise target acquisition in all weather and lighting conditions.

Power is supplied by a single CR2032 battery in a screw-secured tray, offering a runtime of up to 50,000 hours at medium brightness. Additionally, the sight features rubberized controls and a "Shake-Awake" system to extend battery life.

Included in the package are a low-profile and a lower 1/3 co-witness mount, rubber lens covers, a spare battery tray with screws, a cleaning cloth, and a mounting kit.

Features
- Precisely manufactured
- 2 MOA dot with 1/2 MOA adjustment
- Adjustable brightness
- Low and 1/3 co-witness mount included
- "Shake-Awake" system for battery conservation

Technical Details
Reticle: 2 MOA
Number of batteries required: 1
Battery type: CR2032
IP rating: IP67
Included in delivery: Battery
Lens diameter: 20 mm
Rail system: Picatinny Rail