Holosun Micro Sight, Dot Reticle with Shake Awake - HS403GL

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Holosun Micro Sight, Dot Reticle with Shake Awake - HS403GL


Quick Overview

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SKU: 52665
UPC: 760921087503
  • Light Source: LED
  • Reticle: 2MOA Dot
  • Parallax Free: Yes
  • Unlimited Eye Relief: Yes
  • Magnification: 1x
  • Multi-Coatings: Yes
  • Battery Type: CR2032
  • Battery Life: Up to 50,000
  • Solar Power Alternative: No
  • Brightness Setting: 10 Daylight & 2 Night Vision Compatible
  • Housing Material: 6061 Aluminum
  • Adjustment per Click: 0.5 MOA
  • W&E Travel Range: + - 50 MOA
  • Weight: 4.3 oz
  • Height: 1.63”
  • Length: 2.44”

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The 403GL is a small compact red dot sight with side battery housing and H/L adjusting turret options. Employing Holosun’s LED technology, the lifetime for one CR2032 battery can be up to 5 years. Holosun’s “Shake Awake” technology automatically turns the optic on at the slightest movement. When the optic senses no movement, it will go to sleep.Parallax free with unlimited eye relief.

  • Designed for day and night use
  • New advanced technology LED allows up to 50,000 hours of operation on one CR2032 battery
  • 2 MOA on dot size
  • Reduced training time and ammunition
  • Unlimited field of view
  • Parallax-free with unlimited eye relief
  • Unaffected by extreme weather conditions
  • Durable and reliable construction
  • Low mount and 1/3 Co-witness mount included


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SKU: 52665
SKU 52665
Brand Holosun
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 52665

Questions and Answers

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Browse 45 questions Browse 45 questions and 108 answers
will this mount to a g23 glock accessory rail?
jim shawny on Oct 25, 2018
BEST ANSWER: Were you dropped on your head as a kid?
will this mount to a glock 23 accessory rail?
jim shawny on Oct 25, 2018
BEST ANSWER: Wow, Jim... You've asked this same question 4 times. Are you...ok???
Do you actually HAVE a Glock 23? The accessory is UNDER the barrel. The Holosun is a red dot SIGHT.
To use a red dot sight, you have to look through it.
So, how is that going to work?
Does it “shake awake” while riding in vehicle?
BBlack on Oct 27, 2018
BEST ANSWER: No, the sight has a built-in GPS to detect speeds over 10 mph (16.1 kph) and it disables the shake awake feature.
will this sight fit my PSA 16" M4 Nitride Freedom Rifle, Flat Dark Earth ?
Alan N on Oct 25, 2018
BEST ANSWER: Yea, no matter what color it is
can i mount this to my glock 23 accessory rail?
jim shawny on Oct 25, 2018
BEST ANSWER: Naw family. It’s a red dot optic not a laser.
Can it be manually turned on/off? Thanks.
Andy Tracey D on Oct 27, 2018
BEST ANSWER: Andy, use the internets and look at the manual on the Holosun site.
Yes, you can turn the sight on and off.
But with a 50,000 hour ON life PLUS shake to wake to greatly extend that, WHY, WHY, WHY would you want to turn it off?
How high above the bore of a flat top AR is the sight? I need to know to run some ballistic data. Thanks.
George M on Nov 2, 2018
BEST ANSWER: George, YOU have to run some ballistic data??? This sight, like most other decent quality red dot sight, is set up for 1/3 Co-witness for every flattop AR platform. The Holosun site, which you should be referencing, says "Central Height (in) 1.63"
Now, go crazy with your calculations...
Will this fit a CZ-P 07 9MM?
Gacks on Oct 23, 2018
BEST ANSWER: Yes but the the slide must be milled and if your gonna do that get an rmr
will this mount onto the 40sw gen 4glock accessory rail?
jim shawny on Oct 25, 2018
BEST ANSWER: Probably will but why? It’s not a laser, it’s a red dot and pretty large for a glock if it was milled.
Is this as good or better than the romeo 5?
Chris M on Oct 29, 2018
BEST ANSWER: I think they are basically the same thing, and same great price. The romeo5 looks cooler though. I heard that holosun makes sigs red dots anyway...
Will this handle the recoil of a 12 gauge? Want to put it on my Shockwave.
Josh V on Nov 5, 2018
BEST ANSWER: The Holosun site says it will take up to 1,000 Gs of shock.
When you mount this on your Shockwave, please be sure to hold the Holosun close to your eye and take a video.
Will this fit any mount an aimpoint t2 fits? Do all holosun red dots fit any aimpoint micro mount?
Craig L on Nov 9, 2018
BEST ANSWER: This will fit the T2 mount. Most Holosun micro sights will. with the exception of the HS403A, due to the unique battery housing underneath the optic.
So this is a red dot and alarm clock
in one?
Reeper on Nov 10, 2018
BEST ANSWER: Depends on what it's mounted on and how close to the bed you keep it.
This is my first rifle to look into scoping. Will this fit a Ruger PC Carbine?
Shampoo on Nov 9, 2018
BEST ANSWER: The sight comes with a high, and a low riser. As long as you have a rail, you're good to go. The low riser would be recommended for your PC carbine.
Does it have the red dot or green dot? Thank you
Tim S on Oct 29, 2018
BEST ANSWER: This has a red dot.
Is a low mount included?
Carlos G on Oct 26, 2018
BEST ANSWER: Yes. It comes with the mount pictured and also a low mount.
It will also fit any Aimpoint microdot mount.
Can you still use your fixed sights with this sight mounted?
philip s on Nov 12, 2018
BEST ANSWER: Yes it’s an absolute cowitness
Will this hold up to a 450 bushmaster?
Stephen B on Nov 11, 2018
BEST ANSWER: It only works for the Bushmaster 449 and older.
It states "low mount", but I bought a Romeo 5 which sits too high on my CZ Scorpion; will this work?
Lanny V on Nov 10, 2018
BEST ANSWER: Yes! Holosun really looks out for the consumer and includes the low rise mount. A couple of screws and you can swap bases in no time.
Will this work for 450 bushmaster ar platform?
Vincent W on Nov 20, 2018
BEST ANSWER: Yes, I mounted it on my Bushmaster and it worked great. Holds zero good and a very precise dot. Highly recommend this red dot.
Can this handle the recoil of 7.62x39mm?
Jordan D on Nov 1, 2018
BEST ANSWER: Yes. Have been running a 503 on my WASR ak for a year now with no problems.
Can I use this with a Vortex VMX-3T magnifier?
Brett F on Oct 31, 2018
BEST ANSWER: Probably, but why don't you just get and illuminated, magnified sight?
Does it come with a battery?
Zared H on Feb 1, 2019
BEST ANSWER: Yes. It comes with everything you need to take it out of the box and go to the range.
What is the Max effective range in yards of course? Thanks!
Michael F on Jan 10, 2019
BEST ANSWER: Part of it depends on your eyesight. Also depends on the target size. I use the red dot for 100yrds and in on some of my 5.56 and 308's. I've used it on man sized targets out to 200yds, and you could probably go out farther, but it's not ideal at those ranges without a magnifier.
Can this be used at night without night vision?
Samuel P on Jan 28, 2019
BEST ANSWER: Yes, it has a low light setting. But your not going to be able to see anything with out extra lighting.
Will this fit on a Micro Roni gen 3?
Ben B on Dec 29, 2018
BEST ANSWER: Does it have a 1913 rail or some call it picatinny rail
It will fit
If I wanted to mount this on a scalarworks or geissele mount would it be compatable?
Luke P on Dec 25, 2018
BEST ANSWER: Works with any T1/T2 mount
Does it have manual off and on?
Marcel B on Dec 5, 2018
BEST ANSWER: You can manually turn it on by pressing wither the "+" or "-" buttons on top. To turn it off, you will press both of those buttons at the same time.
Will this see past a gas block front sight?
TheRog on Oct 27, 2018
BEST ANSWER: It will probably mount so once zeroed the dot sight on your front sight post or close to it.
Will this work on an AR or AK platform?
Francis S on Oct 26, 2018
BEST ANSWER: Yes. That's what most people will probably buy it for.


4.6 / 5.0
152 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Amazing optic and got 10 pmags free with it amazing buy
User submitted image
Added Mar 19, 2019
March 19, 2019
1 month ago
This is exactly what I was looking for in a red dot, reliable, well made, great price and ease of use, woukd defintly recommend!
March 13, 2019
2 months ago
holds center
Love the Holosun red dot once sighted in holds dead center .I shredded center bull at fifty yrds.Very satisfied .
March 1, 2019
1 month ago
Great value red dot sight.
Excellent red dot sight. Does what it was designed for.
February 26, 2019
2 months ago
Hundred bucks well spent.
My first holosun, wish I would have got the sig. I love the shake awake but feel the dot isn't as clear.
February 26, 2019
4 months ago
Primo sight
Works great ! Sighting is easy and stays tight to rifle after hundreds of rounds best bang for ur buck !
User submitted image
User submitted image
February 25, 2019
2 months ago
Buy it don't hesitate just go ahead and get it
Its a great red dot cant beat it for the price. Holds zero no issues at all
February 24, 2019
2 months ago
Great sight.
Really good red dot sight.
February 23, 2019
2 months ago
Best budget red dot
This is a very crisp,clear, and accurate site. Took no time to zero in, " shake awake " feature is great. I would definitely recommend to buy.
February 23, 2019
2 months ago
Well built, affordable MRO
I put this 403 GL sight on my Ruger PCC. I find it to be an accurate and intuitive addition to my basic rifle set-up. It holds zero after being taken down, transported, and reassembled. That's more a feather in Ruger's hat, but I'm pleased just the same. I like it and am impressed so much that I got a 503 GU for my 590A1 shotgun. Best thing going for eyes that are past their prime.
February 23, 2019
2 months ago

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