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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

4.7 4.7 out of 5 stars 1,403 ratings

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Black
Red 2 MOA Dot

About this item

  • 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

Product Description

holosun

HOLOSUN

Since 2013, Holosun has been committed to creating innovative optic and laser/IR technologies for a broad range of shooting and hunting needs. Today, Holosun is at the forefront of developing new features including innovations such as - up to a 100,000 hr battery life, Solar Fail-Safe technology, Our signature multi-reticle system (MRS), and much more. At Holosun, it's simple. We are obsessed with producing cutting-edge equipment with superior quality. Holosun is the industry leader in bringing feature-rich, high-quality products at a рrice that won't leave you stranded for ammo money.

HE403B-GR

HS403B and HE403B-GR are 20mm micro sights designed for rifle and carbine applications. These sights feature Holosun's Super LED with 50k hour battery life and 12 reticle intensity settings. The housing of these rifle sights 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. HS403B and HE403B-GR are versatile sights for users of all levels.

shake awake
glass
super LED
rifles
403R HS403C 403B HS503R HE503CU-GR HS510C
HE403R-GD / HS403R HS403C / HE403C-GR HS403B / HE403B-GR HS503R /HE503R-GD HS503CU / HE503CU-GR HS510C / HE510C-GR
Customer Reviews
4.7 out of 5 stars
494
4.6 out of 5 stars
910
4.7 out of 5 stars
1,403
4.2 out of 5 stars
120
4.7 out of 5 stars
875
4.8 out of 5 stars
5,738
Reticle Color: Gold & Red Options Red & Green Options Red & Green Options Gold & Red Options Red & Green Options Red & Green Options
Reticle 2 MOA Dot 2 MOA Dot 2 MOA Dot MRS: 2 MOA Dot & 65 MOA Circle MRS: 2 MOA Dot & 65 MOA Circle MRS: 2 MOA Dot & 65 MOA Circle
Shake Awake - -
Solar FailSafe - - -
Unlimited Eye Relief
In the Box Lower 1/3 Cowitness Mount; Low Profile Mount; T10 L Key; Rubber Cover; User Manual; CR2032 Battery; Lens Cloth Lower 1/3 Cowitness Mount; Low Profile Mount; T10 L Key; Rubber Cover; User Manual; CR2032 Battery; Lens Cloth Lower 1/3 Cowitness Mount; Low Profile Mount; T10 L Key; Rubber Cover; User Manual; CR2032 Battery; Lens Cloth Lower 1/3 Cowitness Mount; Low Profile Mount; T10 L Key; Rubber Cover; User Manual; CR2032 Battery; Lens Cloth Lower 1/3 Cowitness Mount; Low Profile Mount; T10 L Key; Rubber Cover; User Manual; CR2032 Battery; Lens Cloth Absolute Cowitness QD Mount; T10 L Key; User Manual; CR2032 Battery; Lens Cloth

Product information

Technical Details

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HOLOSUN

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


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Customer reviews

4.7 out of 5 stars
4.7 out of 5
1,403 global ratings

Customers say

Customers like the quality, value, performance, and dot quality of the aiming scope sight. For example, they mention it's well made, performs well, and has a bright red dot. That said, they appreciate the ease of installation, brightness, battery life, and fit.

AI-generated from the text of customer reviews

103 customers mention82 positive21 negative

Customers like the quality of the aiming scope sight. They say it is a solid and well-made little sight. The sight and mount are well machined and finished. The packaging from Holosun was very nice and well thought out. Some customers mention that the items are hard use items. However, most are happy with the quality and functionality of the product.

"Great sight and great price. Minimal adjustments to sight it in also." Read more

"This product is fantastic, easy mount, great clarity, superb quality" Read more

"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...." Read more

"...It feels pretty solid, though I don't know what else to compare it to...." Read more

81 customers mention73 positive8 negative

Customers find the aiming scope sight to be good value for the money. They say the quality and price are unbeatable. Customers also say it's a solid performer for what they paid.

"Great sight and great price. Minimal adjustments to sight it in also." Read more

"...Its affordable but it doesn’t feel like a cheap rds...." Read more

"...fit the bill very well, compact, light, long battery life, The price was decent, if not more than i wanted to spend, i was really comparing this to..." Read more

"Great optic for the price! The lens is clear and the dot is very adjustable. Sufficient for indoors and outdoors." Read more

46 customers mention34 positive12 negative

Customers like the performance of the aiming scope sight. They say it performs very well, is well constructed, and has a very fine and bright dot. They also say zeroing was easy and that it's a great product overall. Customers also mention that it is a good entry level device.

"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...." Read more

"I have used this rds 3 times now and it performs very well. Ill be honest it is my first rds so i cant really compare it to other models...." Read more

"...the battery even through it's supposed to last years and still doesn't work. Worst part is I never fired a shot while this red dot was mounted...." Read more

"Works great" Read more

40 customers mention29 positive11 negative

Customers like the dot quality of the aiming scope sight. They mention it's an excellent red dot sight, it'll easily see in different lighting conditions, and it'd be a good choice for a high-quality motion activated red do t sight. The glass is clear and the do s is sharp and bright.

"...The red dot is easily visible in different lighting conditions, even when I turned in my weapon light and got a lot of reflection from the wall I..." Read more

"It appears well made, the dot is plenty bright, but I haven't had a chance to sight it in so I dont know how well it will work yet." Read more

"...However, unlike other red dots I've looked through, for me the dot was less of a dot and more of a smear...." Read more

"...both are excellent in the optics department, glass is clear, red dot is sharp, I cant really tell much difference between it and a real Aimpoint i..." Read more

31 customers mention31 positive0 negative

Customers find the installation process of the aiming scope sight to be easy. They mention it's small, lightweight, and intuitive in terms of controls. Some say that it comes with all tools necessary to install, as well as the riser mount, instructions, and extra parts. Additionally, customers mention that it'll attach to the rail of their Brigade AR9.

"This product is fantastic, easy mount, great clarity, superb quality" Read more

"...Easy to put on my rifle and pretty intuitive in terms of controls...." Read more

"...Stupidly simple stuff.The only downside I can think of is the mount. It feels cheap and probably won't hold up to a lot of abuse...." Read more

"Easy to install. Was the right height for my fixed A2 sight. Easy to adjust windage and elevation. Adjustable brightness is a plus." Read more

21 customers mention17 positive4 negative

Customers like the brightness of the aiming scope sight. They say it works great in all lighting, has a good range of illumination levels, and the zero dot is always bright and easy to see. The unit seems solid enough and has decent brightness and controls/adjustment. It's excellent in the optics department, and is sufficient for indoors and outdoors. It can be used very effectively out to much farther range. Overall, customers are satisfied with the brightness and features of the product.

"...ram at 400 yards, so its not a precision scope, but it can be used very effectively out to much farther range than this type of sight is intended..." Read more

"...The lens is clear and the dot is very adjustable. Sufficient for indoors and outdoors." Read more

"...The reticle brightness is good enough to shoot during clear skies down here in Louisiana...." Read more

"...everything else is great! the optic looks great and functions as its intended to...." Read more

18 customers mention15 positive3 negative

Customers like the battery life of the aiming scope sight. They mention it has a super long battery life, it's durable, and has motion detection. The timing is adjustable, with the device set to 8 hours by default.

"...the HS403b fit the bill very well, compact, light, long battery life, The price was decent, if not more than i wanted to spend, i was really..." Read more

"...The battery life is nearly infinite and it's bright even in sunlight. Buy it and save money and get quality at the same time...." Read more

"...Price under $150 delivered is a good price.Battery life of 50,000 hours (huge pro)Size and weight...." Read more

"This sight has a "shake awake" feature with variable timing, set to 8 hours by default, it comes with a lower 1/3rd cowitness and direct mounts, an..." Read more

18 customers mention14 positive4 negative

Customers like the fit of the aiming scope sight. They say it fits extremely well on their rails and is perfectly suitable for 99.9% of anything a civilian could throw at it. Customers also appreciate the compact size and light weight of the product.

"...the HS403b fit the bill very well, compact, light, long battery life, The price was decent, if not more than i wanted to spend, i was really..." Read more

"...Fit and finish is top notch, what I liked about the holosun vs vortex crossfire was that to my eye the dot was more crisp, and the shake to wake..." Read more

"...I bought a 507k x2 red dot for Sig 364xl, which fit perfectly and works great. Okay, on to this red dot...." Read more

"...I gave four stars instead of five is the screws to the battery tray are very small and seemed to have stripped when I tried to remove the battery to..." Read more

Battery tray seeming to not fit correctly
5 Stars
Battery tray seeming to not fit correctly
Just purchased, haven’t gotten to use it or even mount it but one concern/problem I had was getting the battery tray in correctly. When you put the battery tray into the scope housing the o-ring around the battery tray doesn’t go all the way inside the scope housing but gets pinched between the battery tray and the scope housing. This was very frustrating at first because you would think the o-ring needs lay flush inside the scope housing for a proper seal, but I guess not. I have 2 friends with the same scope who love it and said their battery tray o-ring does the same thing. I also contacted holosun (great customer service) and they told me this was normal and the o-ring isn’t suppose to go all the way into the scope housing. Like I said, I haven’t gotten to really use it yet but everything besides the battery tray o-ring issue is good. You can see what I mean that the o-ring doesn’t sit flush inside the scope in the picture provided. Apparently this is how they are made though and it’s still sealed properly. I will update this posting as time goes on.
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Top reviews from the United States

Reviewed in the United States on November 9, 2023
Color: FDEStyle: Green 2 MOA DotVerified Purchase
Reviewed in the United States on November 28, 2023
Color: BlackStyle: Red 2 MOA DotVerified Purchase
Reviewed in the United States on January 28, 2021
Color: BlackStyle: Red 2 MOA DotVerified Purchase
60 people found this helpful
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Reviewed in the United States on August 1, 2021
Color: BlackStyle: Red 2 MOA DotVerified Purchase
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5.0 out of 5 stars Great rds for value
Reviewed in the United States 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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3 people found this helpful
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Reviewed in the United States on September 22, 2019
Color: BlackStyle: Red 2 MOA DotVerified Purchase
4 people found this helpful
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Reviewed in the United States on December 30, 2020
Color: BlackStyle: Red 2 MOA DotVerified Purchase
2 people found this helpful
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Reviewed in the United States on July 9, 2023
Color: BlackStyle: Red 2 MOA DotVerified Purchase
Reviewed in the United States on July 21, 2016
Color: BlackStyle: Red 2 MOA DotVerified Purchase
Customer image
5.0 out of 5 stars Awesome optic, especially if you don't want to drop ...
Reviewed in the United States on July 21, 2016
Awesome optic, especially if you don't want to drop more than $200 on one. I thought the battery compartment was going to be a bigger hassle than it actually is. Then again, you really only have to access it once every five years or so. The motion sensor is the best feature, making it easier to just grab your firearm and use it without having to power it on or off. The reticle brightness is good enough to shoot during clear skies down here in Louisiana. The HS403 is adjustable, allowing you to use the adjustment caps to make corrections. Stupidly simple stuff.

The only downside I can think of is the mount. It feels cheap and probably won't hold up to a lot of abuse. If I'm not mistaken, the optic is compatible with Aimpoint T/H-1 mounts, so that's a plus.

If you're on the fence about the HS403, grab one up. Totally worth the money. If it's not what you were hoping for, slap it on a .22LR or sell it.
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21 people found this helpful
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