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Holosun HS510C Multi-Reticle Circle Dot Open Reflex Sight w/ Solar Failsafe, Shake Awake, and QD Mount - HS510C

SKU HS510C-Holosun

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The Holosun HS510C is an Open Reflex Sight created with Solar Failsafe™ which means you won't have to worry about battery failure. With the added feature of automatic brightness adjustment, you'll be able to use your red-dot in almost any lighting condition. Add to that the convenience of Shake Awake™, the user-programmable LED shut-off technology that wakes with the slightest movement, and you have one of the most battery efficient micro reflex sights on the market. Topping it off is T6 Aluminum housing and a multi-reticle system making this a must-have optic for any rifle or PDW.

In the Box:

  • Absolute Cowitness QD Mount
  • T10 L Key
  • CR2032 Battery
  • Lens Cloth
  • User Manual

Features of the Holosun HS510C

  • MRS: Circle Dot; 2 MOA Dot; 65 MOA Circle
  • Up to 50,000 Hours Battery Life (Setting 6)
  • 12 Brightness Setting: 10 DL & 2 NV Compatible
  • Convenient Tray Battery Compartment
  • Parallax-free & Unlimited Eye Relief


  • Magnification Range:1x
  • Reticle DetailsRed 2 MOA Dot & 65 MOA Circle
  • Objective Lens Diameter:0.91"x1.26"
  • Dimensions:3.3"x1.68"x1.78"
  • Weight:4.94 oz
  • BatteryCR2032 and Solar
  • Battery TypeCR2032
  • Night Vision CompatibleYes
  • Brightness Settings2 NVD 10 Regular
  • Product TypeReflex Sight/Red Dot
  • Item ConditionNew
  • UPC605930624571
  • MPNHS510C

Customer Reviews

Average Rating
June 24, 2022

I'm impressed with this so much that I'll be purchasing another soon. And....let's talk about shipping. Who gives free shipping and has the product in your hand in 21 hours flat?....EuroOptic, that's who! I'm the guy who reads reviews before purchasing anything and I'm 100% satisfied!

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February 12, 2023

The most well built type I’ve used. Great construction.

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August 17, 2021

The product performance is great. I appreciate the fast shipping. I haven't had much range time with the product but the range time I did have was great. Easy to make adjustments. The mount is solid and this will be my primary optic for my apc9 pro. Good price for the value. Would recommend.

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April 17, 2022

It's not a top of the line atomic bomb proof aimpoint but for the money its solid. I have astigmatism and with this reflex I can barely even notice that I have it unless I turn it to a super bright setting. Other than that it looks pretty cwispy and clean and has a hood to protect the glass

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January 19, 2022

Second one of this model acquired. I find the Holosun products to be like most great value for the money. I don't think that is a shock to anyone it is pretty much the status quo and view of most, you get a great working option, may not be military durable but for the Avg Joe it does the trick and doesn't require to you mortgage the house.

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November 29, 2022

Great optic and can’t say enough about the staff at Euro Optics. Super fast shipping and great prices. Will definitely it and recommend these guys to all my buddies. Thanks for a great experience!

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October 21, 2022

Picked this as my first red dot and can definitely say it’s amazing. For the current price point, quality and fantastic shipping by EuroOptic, this is a must.

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June 20, 2022

Fantastic product. Great quality for the price and perfect size to have mounted on my lever action. Wanted something a little smaller than an EOTECH and this worked out great. Reticle is very visible and getting it dialed in was straight forward. Would definitely recommend this to anyone that needs a budget red dot with an EOTECH-like reticle.

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December 10, 2022

I agree with the comments of the other reviewers, good quality for the price and great service including fast delivery by EuroOptics. This HS510C is mounted on a PC Carbine “house gun”, so the instant on is a very useful feature. Another great Holosun feature not mentioning by the other reviewers is the factory bore sight in. The as delivered calibration lined up perfectly with my laser bore sight at 25 yards.

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December 7, 2022

I bought this to go on my KSG for the small center dot and larger outer ring. Perfect for acquiring a target for a shotgun with 00 buck. The fact that it uses ShakeAwake technology is a real plus and it is the perfect height to still use my pop up sights also. This is my second Holosun and I have bought them both from euro-optic and could not be more pleased with both. The whole process is fast and painless. There customer service is second to none. I bought two Vortex scopes also and I always go to euro-optic first.

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January 2, 2022

Outstanding sight, I own several red and green dot Dot sights from Holosun that are on SBR’s and pistol carbines. All are outstanding sights! This particular sight is on my B&T GHM9, fits perfectly with its slim design were others are just to big and bulky for this compact firearm.

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August 1, 2021

Very nice sight for the money. In fact like it so much I've got two !!! Plus a smaller 507 for one of my pistol's. Holosun good value for the price point.

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