---
product_id: 751387360
title: "HOLOSUN HE403B-GR / HS403B 2 MOA Dot Micro Sight for Rifles - Shake-Awake Super LED Durable Waterproof Aluminum Sight with Multilayer Reflective Glass & 12 Brightness Settings - Red/Green Dot Options"
brand: "holosun"
price: "€ 2.11"
currency: EUR
in_stock: false
reviews_count: 5
url: https://www.desertcart.es/products/751387360-holosun-he403b-gr-hs403b-2-moa-dot-micro-sight-rifles
store_origin: ES
region: Spain
---

# 12 brightness settings 50,000 hrs battery life 6061 aluminum durable housing HOLOSUN HE403B-GR / HS403B 2 MOA Dot Micro Sight for Rifles - Shake-Awake Super LED Durable Waterproof Aluminum Sight with Multilayer Reflective Glass & 12 Brightness Settings - Red/Green Dot Options

**Brand:** holosun
**Price:** € 2.11
**Availability:** ❌ Out of Stock

## Summary

> 🎯 Lock in precision, outlast the competition.

## Quick Answers

- **What is this?** HOLOSUN HE403B-GR / HS403B 2 MOA Dot Micro Sight for Rifles - Shake-Awake Super LED Durable Waterproof Aluminum Sight with Multilayer Reflective Glass & 12 Brightness Settings - Red/Green Dot Options by holosun
- **How much does it cost?** € 2.11 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/751387360-holosun-he403b-gr-hs403b-2-moa-dot-micro-sight-rifles)

## Best For

- holosun enthusiasts

## Why This Product

- Trusted holosun brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rugged & Ready:** Built from aircraft-grade 6061 T6 aluminum with multilayer reflective glass for maximum durability, glare reduction, and crystal-clear sight picture.
- • **Unmatched Endurance:** Up to 50,000 hours of battery life with ultra-efficient Super LED technology keeps you mission-ready without the hassle of frequent changes.
- • **Precision at a Glance:** 2 MOA red dot reticle with parallax-free, unlimited eye relief ensures lightning-fast target acquisition and pinpoint accuracy every time.
- • **Smart Power Management:** Shake Awake technology instantly activates your sight with the slightest movement, extending battery life while ensuring you never miss a shot.
- • **Adaptive Brightness Control:** 12 reticle intensity settings plus night vision modes let you dominate any lighting condition, from dawn patrol to twilight ops.

## Overview

The HOLOSUN HE403B-GR is a cutting-edge 20mm micro red dot sight engineered for rifles and carbines. Featuring a 2 MOA red dot reticle, 12 brightness settings including night vision, and an ultra-efficient 650nm Super LED with up to 50,000 hours battery life, it delivers unmatched accuracy and endurance. Its rugged 6061 T6 aluminum housing and multilayer reflective glass optimize durability and clarity, while Shake Awake technology smartly conserves power by activating the sight instantly upon movement. Designed for professional shooters and tactical enthusiasts, this sight offers versatile mounting options and superior performance in all conditions.

## Description

Full description not available

## Features

- HOLOSUN RED DOT SIGHT - HS403B is a 20mm micro sight designed for rifle and carbine applications; It features Holosun's ultra efficient 650nm Red Super LED with up to 50k hour battery life and 12 reticle intensity settings; The 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; Lens cloth, rubber lens cover, T10 L key, and CR2032 battery included
- SHAKE AWAKE TECHNOLOGY - Extends battery life by deactivating the optic's LED while not in use; Shake Awake offers settings from 10 minutes to 12 hours depending on the model and can be deactivated altogether if preferred; The slightest touch of the optic instantly reactivates the LED so your Holosun sight for rifle is ready when needed
- MULTILAYER REFLECTIVE GLASS - This red dot sight for rifle is manufactured using optical-quality glass lenses with multilayer coatings applied to facilitate maximum light transmission and wear resistance while reducing glare and facilitating reduced power requirements; Holosun's highly reflective coatings produce industry-leading reticle intensity, clarity, and battery efficiency
- SUPER LED - This micro sight for rifle is equipped with Holosun Super LED technology that provides a versatile range of reticle intensity settings; Holosun Super LEDs have ultra-efficient power usage creating battery like as high as 50,000 hours
- SPECIFICATION - Reticle: Red 2 MOA; Light Wavelength: 650nm; Magnification: 1x; Parallax Free & Unlimited Eye Relief; Power Source: Solar & Battery; Battery Type: CR2032; Battery Life (Hours): 50000; Brightness Setting: 10 DL & 2 NV; Window Size: 20mm Diameter; Housing Material: 6061 T6 Aluminum; Adjustment per Click: 0.5 MOA; W&E Travel Range: ±50 MOA; Black Finish

## Images

![HOLOSUN HE403B-GR / HS403B 2 MOA Dot Micro Sight for Rifles - Shake-Awake Super LED Durable Waterproof Aluminum Sight with Multilayer Reflective Glass & 12 Brightness Settings - Red/Green Dot Options - Image 1](https://m.media-amazon.com/images/I/51EE-VWJ2ZL.jpg)
![HOLOSUN HE403B-GR / HS403B 2 MOA Dot Micro Sight for Rifles - Shake-Awake Super LED Durable Waterproof Aluminum Sight with Multilayer Reflective Glass & 12 Brightness Settings - Red/Green Dot Options - Image 2](https://m.media-amazon.com/images/I/51oKCMIZDeL.jpg)
![HOLOSUN HE403B-GR / HS403B 2 MOA Dot Micro Sight for Rifles - Shake-Awake Super LED Durable Waterproof Aluminum Sight with Multilayer Reflective Glass & 12 Brightness Settings - Red/Green Dot Options - Image 3](https://m.media-amazon.com/images/I/41OHGVIUl8L.jpg)
![HOLOSUN HE403B-GR / HS403B 2 MOA Dot Micro Sight for Rifles - Shake-Awake Super LED Durable Waterproof Aluminum Sight with Multilayer Reflective Glass & 12 Brightness Settings - Red/Green Dot Options - Image 4](https://m.media-amazon.com/images/I/4111gFi0aFL.jpg)
![HOLOSUN HE403B-GR / HS403B 2 MOA Dot Micro Sight for Rifles - Shake-Awake Super LED Durable Waterproof Aluminum Sight with Multilayer Reflective Glass & 12 Brightness Settings - Red/Green Dot Options - Image 5](https://m.media-amazon.com/images/I/41uVtntO+iL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ An outstanding red dot optic at a bargain price
*by R***L on June 29, 2024*

Holosun has a well-deserved reputation for making quality red dot optics and the HS403B lives up to that reputation. It's attractive, very rugged, fairly easy to install and simple to operate. It has a wide range of adjustment for both windage and elevation, making it suitable for an equally wide range of firearms. The battery life is impressive and the "shake awake" auto-activation feature works exactly as advertised. Once zeroed, it holds zero without any issues. The red dot is crisp and easily visible. Its brighter settings are fully sufficient to make the dot visible in bright sunlight.My only complaint about this optic, and it's a very minor one, is that a basic 2 MOA red dot is the only reticle available. It would be nice to be able to select an "EOTech-style" reticle with a 2 MOA dot inside of a 65-68 MOA circle as an option. Given the sub-$200 price point for the HS403B, however, multiple reticle options is probably a bit much to ask. The simple red dot is sufficient for most shooting situations and the optic is, overall, an excellent bargain.

### ⭐⭐⭐⭐⭐ Great basic little red dot
*by L***L on January 30, 2021*

This is my second Holosun red dot. I bought a 507k x2 red dot for Sig 364xl, which fit perfectly and works great. Okay, on to this red dot. This was exactly what I needed, in the price point, for my .30 cal M1 carbine.It comes with a riser rail attachment, but I removed it and mounted it directly to my rail. The brightness can be adjusted up or down as needed and the glass is clear. I like where the buttons are placed and battery replacement is easy. I haven’t had it long, so I can not speak to battery life. I can tell you it is a solid and well made little sight. And I hear the owner is moving the company to the US for manufacturing in the near future.

### ⭐⭐⭐⭐⭐ Great rds for value
*by Y***I on August 1, 2021*

UPDATE: Still solid, no issues whatsoever. Red dot looks just as new as the first day, haven’t had any problems losing my zero or with the battery. I am thinking of eventually buying an aimpoint t2 just because is one the best rds you can get but it comes at a higher price. For now this holosun will keep on doing!Have shot it about twice now and 200 rounds later. Pretty accurate and easy to zero in. Have no trouble hitting targets at 50 or 75 yards. The dot is very clear, even in harshlight where the sun is at its brightest. Its affordable but it doesn’t feel like a cheap rds. Although I want to upgrade to an eotech holographic sight, this rds has been very nice and enjoyable to shoot with. Currently shooting a DD m4v7.

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-25*