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Holosun HS510C 1x0.91-1.2in Open Reflex Red Dot Sight, Color: Black, Flat Dark Earth, Battery Type: CR2032
w/ Free Shipping — 3 models
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.
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
Review of my 510c
by
Jake,
Verified Owner,
August 2, 2025
I like the shack awake option, it was my understanding it had auto dark and light but I have not figured it out yet. The color tan matched my tan rifle. Came with a battery. No sticker… when you spend this much money. It’s nice to get some stickers a...
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1/2 found this helpful
Helpful Positive Review
510c red dot
by
F.c.,
Verified Owner,
June 21, 2025
This by far my favorite red dot i own ...looks amazing on my ar15 for home defense optic planet alway has good deals most definitely recommend im buy another one for my next build
Great optic for carbine platforms. The multiple options for the sighting image are a plus. Could be a little bulky for some pistol based platforms, but overall great quality at a decent price point.
1/1 found this helpful
Helpful Positive Review
Holosun HS510C
by
Kyle,
Verified Owner,
June 14, 2025
Amazing red dot! Clear glass. I highly recommend. Will be buying another for my next build
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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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.
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.
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 HS510C 1x, Open Reflex Sight, Red 2 MOA dot 65 MOA Circle Reticle, Flat Dark Earth, HS510C-FDE-R, MPN:
HS510C FDE, UPC: 605930624991, Code: 28Y-RD-HBNV-HS510C-FDE-R
Holosun HS510C 1x, Open Reflex Sight, Green 2 MOA dot 65 MOA Circle Reticle, Flat Dark Earth, HS510C-FDE-G, MPN:
HS510C-GR FDE, 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 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 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 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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