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Questions & Answers
Will the HS510C cowitness with Troy micro sights? Expert Answer

This optic has a 1.41" optical center which is approximately an absolute co-witness for standard height AR iron sights. The Troy micro battle sights are lower than standard height iron sights so this red dot should be around a lower 1/3 co-witness with the Troy micro sights.

by Jonathan D., Gear Expert, September 9, 2019
What riser/mount would work for the HS510c if a Lower 1/3 Co Witness were desired? Expert Answer

Holosun does make a riser for the HS510C, unfortunately we do not carry it. Here is a link to the manufacturer's website for the item:

https://holosun.com/index.php?main_page=product_info&products_id=72

by Jonathan D., Gear Expert, March 22, 2018
Customer Reviews
Expert Review
Solid Reflex Sight by Matt S., Gear Expert, April 12, 2018
Pretty impressed with this sight. Good sized window and while I mostly run the circle dot reticle, I like having the option to switch to just a dot reticle. Controls are on the side and easy to use. Opposing side battery tray means you don't have t...
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15/17 found this helpful
Helpful Positive Review So you won"t go crazy too!!! by Big Shooter, Verified Owner, July 16, 2020
I have within the last 2 weeks purchased 2 HS510C Holosun red dot sights. 2 MOA dot w/ 65 MOA circle. I am retired law enforcement, and am familiar with red dot sights. I have Trigicon RMR red dots on 3 of my EDC pistols. I thought I was going crazy...
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8/13 found this helpful
Helpful Positive Review Near perfect red dot sight for AR-15 by Mike, December 8, 2023
The Holosun 510c is a near perfect red sight for my Daniel Defense AR-15. It is easy to set up right out of the of the box and easy to snap on to my rifle. It works great by itself and complements my MBUS 3 front and rear pop up sights. It’s also su...
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2/2 found this helpful
Helpful Positive Review Holosun HS510C / Don't hesitate ! by NelsonMitchell, January 7, 2024
Both my sons purchased the more expensive EOTECH HWS EXPS3, and all together, they like the Holosun I purchased as much as there's. It's a little smaller that the Eotech, but the window is bigger. Very accurate, very tough, easy to operate. I'm going...
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4/4 found this helpful
Helpful Positive Review Holosun HS510C by Jesse Ewert, Verified Owner, December 9, 2023
My brother suggested this scope for my new AR style carbine for field of view relative to size having set up little further down the rail and being able to keep both eyes open while working it. Will take a little getting used to but I think he was on...
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1/1 found this helpful
Helpful Positive Review works great by Jason D, Verified Owner, June 29, 2021
Wanted a red dot for my shotgun but was really concerned that it would be to violent for most affordable sights. Did a bunch of google’ing and watching reviews of the sight and decided buy this one. Mounted nicely and was really easy to zero in. So f...
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2/2 found this helpful
Read All 401 Reviews

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Our customers have spoken – this is one of the best rated products in the Red Dot Sights & Accessories category! See more best rated Red Dot Sights & Accessories products
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Product Info for Holosun HS510C 1x0.91-1.2in Open Reflex Red Dot Sight

The Holosun HS510C Red Dot Sight sports a streamlined housing design with an open frame for a wide sight picture and minimized obstruction of vision. Built for use with carbines, PCCs, and shotguns, these Red Dot Sights from Holosun are available with a Red Super LED or Green Super LED that provides up to 50,000 hours of battery life. They are powered by Advanced Super Solar Technology with battery backup. Equipped with a protective titanium alloy hood, the Holosun HS510C open reflex optic is waterproof down to 1m and durable enough for even the heaviest calibers. Choose between three different reticles with the Multi-Reticle System (MRS), and experience the comfort of parallax-free views and unlimited eye relief.image

This HS510C Holosun red dot offers other innovations, such as Solar Failsafe which provides a backup reticle in case of a power failure and adjusts your red dot's brightness level based on ambient lighting conditions. With 12 total brightness settings, including two night vision modes, you can create a customized shooting experience for your hunting and range training adventures. Buy a Holosun HS510C red dot or green dot sight today to improve your target acquisition speeds and precision with your favorite long gun.

Does HS510C Have Shake Awake?

The Holosun HS510C does feature Shake Awake Technology. Shake Awake uses a highly sensitive motion sensor that keeps your optic powered on when it senses motion and powers it off when not in use.

How Far Can You Shoot with a Holosun 510C?

While designed for long guns, the Holosun 510C isn’t magnified, so it is most effective at 100 yards or less. However, using the HS510C with a red dot magnifier can greatly increase the effective range.

WARNING: California`s Proposition 65

Specifications for Holosun HS510C 1x0.91-1.2in Open Reflex Red Dot Sight:

Manufacturer: Holosun
Magnification: 1 x
Brightness Settings: 12
Eye Relief: Unlimited
Adjustment Type: MOA
Adjustment Click Value: 0.5 MOA
Parallax: Parallax Free
Optical Coating: Multi-Coated
Battery Type: CR2032
Water Resistance Level: IP67
Length: 3.3 in
Weight: 4.94 oz
Condition: New
Quantity: 1

Features of Holosun Red Dot Scope, Multiple Reticles HS510C:

  • Multiple Reticle System featuring 3 reticles;
  • Parallax free optical design, with unlimited eye relief;
  • Minimized obstruction of vision with push button controls and a streamlined housing design;
  • Motion Sensor with Shake Awake or can stay on until manually turned off;
  • Internal battery tray design;
  • 32mm×24mm open lens;
  • Solar cell and high capacity battery provide dual power supplies;
  • Titanium-alloyed, shock resistant protective hood;
  • Quick release mount

Package Contents:

  • Holosun HS510C Micro Red Dot Sight with 3 Reticle Options
  • Mount
  • Battery tray
  • Adjustment tool
  • Torx wrench

Holosun HS510C 1x0.91-1.2in Open Reflex Red Dot Sight Orderable Models

List of Orderable Models

Holosun HS510C Open Reflex Sight 1x, 2 MOA Dot, 65 MOA Circle Reticle, Black HS510C , MPN: HS510C , UPC: 605930624571 , Code: 28Y-RD-HBNV-HS510C
Holosun OPMOD HS510C Red Dot Sight, Red MRS, 2 MOA Dot, Wolf Grey , MPN: 28Y-RD-OPAEM3-HS510C-WG-KIT2023 , Code: 28Y-RD-HBNV-28Y-RD-OPAEM3-HS510C-WG-KIT2023
Holosun HS510C 1x, Open Reflex Sight, Red 2 MOA dot 65 MOA Circle Reticle, Flat Dark Earth, HS510C-FDE-R , MPN: HS510C-FDE-R , UPC: 605930624991 , Code: 28Y-RD-HBNV-HS510C-FDE-R
Holosun OPMOD HS510C Red Dot Sight, Green MRS, 1x30 mm, 2 MOA Dot, Wolf Grey , MPN: 28Y-RD-OPAEM3-HE510C-GR-WG-KIT2023 , Code: 28Y-RD-HBNV-28Y-RD-OPAEM3-HE510C-GR-WG-KIT2023
Holosun HS510C 1x, Open Reflex Sight, Green 2 MOA dot 65 MOA Circle Reticle, Flat Dark Earth, HS510C-FDE-G , MPN: HS510C-FDE-G , UPC: 605930624953 , Code: 28Y-RD-HBNV-HS510C-FDE-G

Holosun HS510C 1x0.91-1.2in Open Reflex Red Dot Sight Unavailable & Discontinued Models

List of Unorderable Models

Holosun Circle Dot Open Reflex Sight,2 MOA Dot,65 MOA Circle,91x65x40mm, Black HS510C with American Defense Manufacturing Holosun 510C Quick Detach Mount , MPN: HS510C-KIT1 , Code: 28Y-RD-HBNV-HS510C-KIT1
Holosun Circle Dot Open Reflex Sight,2 MOA Dot,65 MOA Circle,91x65x40mm, Black HS510C with American Defense Manufacturing Holosun 510C Titanium Quick Detach Mount , MPN: HS510C-KIT2 , Code: 28Y-RD-HBNV-HS510C-KIT2
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