HOLOSUN HE510C-GR / HS510C Multi-Reticle 2 MOA Dot & 65 MOA Circle Open Reflex Sight for Long Guns - Solar FailSafe Shake-Awake Waterproof Sight with 12 Brightness Settings - Red/Green Dot Options
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
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Availability:
In Stock.
Arrives
Dec 12 – Dec 13
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Style: Red 2 MOA Dot & 65 MOA Circle (HS510C)
Features
- HOLOSUN RED DOT SIGHT - The HS510C sight is a versatile open reflex optic designed for long gun applications; It is at home on carbines, PCCs, and shotguns due to its durable design; This gun sight has an aluminum housing with titanium hood for added shock resilience and includes a QD absolute co-witness mount (1.41" dot height); This red dot sight is packed with Solar Failsafe, Shake Awake, MRS (Multi-Reticle System), Red Super LED with up to 50k hour battery life
- MULTI-RETICLE SYSTEM - This Holosun red dot sight is equipped with MRS to let you select a fast sight picture for shorter distances with a 65 MOA circle with 2 MOA dot; The large circle allows for a hold-over reference and helps guide your eye to the 2 MOA dot; The large ring can be deactivated leaving just the 2 MOA dot for an uncluttered sight picture and increased precision
- 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 reflex sight is ready when needed
- SOLAR FAILSAFE - If your battery fails, this red dot sight has a backup power source when natural or artificial light is available; Solar Failsafe is activated while in Auto Mode where reticle intensity is automatically adjusted: in brighter conditions, you have a brighter reticle and in lower-light conditions, the reticle will step down in intensity to match any lighting conditions
- SPECIFICATION - Reticle: Red 2 MOA Dot & 65 MOA Circle; Light Wavelength: 650nm; Magnification: 1x; Parallax Free & Unlimited Eye Relief; Power Source: Battery; Battery Type: CR2032; Battery Life (Hours): 50000; Brightness Setting: 10 DL & 2 NV Compatible; Window Size: 0.91x1.26; Housing Material: Aluminum & Titanium Hood; Surface Finish: MAO; Adjustment per Click: 0.5 MOA; W&E Travel Range: 50 MOA
Brand: HOLOSUN
Color: Red 2 MOA Dot & 65 MOA Circle (HS510C)
Style: Red 2 MOA Dot & 65 MOA Circle (HS510C)
Product Dimensions: 3.3"L x 1.8"W x 2.3"H
Sport: One Size All
Item Weight: 8.32 ounces
Material: Aluminum
Magnification Maximum: 1 x
Objective Lens Diameter: 30 Millimeters
Magnification Minimum: 1 x
Brand: HOLOSUN
Color: Red 2 MOA Dot & 65 MOA Circle (HS510C)
Style: Red 2 MOA Dot & 65 MOA Circle (HS510C)
Product Dimensions: 3.3"L x 1.8"W x 2.3"H
Sport: One Size All
Item Weight: 8.32 ounces
Material: Aluminum
Magnification Maximum: 1 x
Objective Lens Diameter: 30 Millimeters
Magnification Minimum: 1 x
Compatible Devices: Firearms with 1913 Picatinny Rail
Mounting Type: Rail Mount
Night vision: No
Field Of View: 25
Hand Orientation: Ambidextrous
Model Name: 510C
Manufacturer: Holosun
Reticle Type: 65 MOA circle with 2 MOA dot
UPC: 350102577789 605930624571
Global Trade Identification Number: 71
Item Package Dimensions L x W x H: 4.76 x 3.54 x 3.15 inches
Package Weight: 0.39 Kilograms
Item Dimensions LxWxH: 4.75 x 3.62 x 3.12 inches
Brand Name: HOLOSUN
Warranty Description: Limited Lifetime
Suggested Users: unisex-adult
Number of Items: 1
Part Number: HSHS510C
Model Year: 2016
Included Components: CR2032 Battery
Size: One Size
Date First Available: November 26, 2016
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Dec 12 – Dec 13
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: Red 2 MOA Dot & 65 MOA Circle (HS510C)
Holosun is a fantastic optic, Yes it is made in China and they are making a very durable and top of the line product. Excellent sight picture ,very clear and durable optic, I shoot a lot and I believe this is my eighth one I have purchased for the collection of rifles I have, I own EOTECH and many others, there is nothing more durable than EOTECH but this comes pretty close when you look at it has solar so you really never worry about it working, shake awake, fog and water proof, night vision capabilities, reliable to zero every time, don’t worry about the battery and don’t forget to buy a cheap cover to go with it, you really can’t go wrong with any of the Holosun line
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Reviewed in the United States on November 22, 2025 by KET19
Style: Red 2 MOA Dot & 65 MOA Circle (HS510C)
I have owned this little optic for about a year now. First on a rifle but now resides in my home defense shotgun. I have found this to be a tough well made optic that holds zero even through punishing recoil of a shotgun. I have had zero issues with the QD mount attaching to the picc rail of my firearm and once there it is rock solid. The reticle is crisp and clear even with aging eyes. The adjustments in illumination level is easy and is palpably visible. There is some blurring on the highest level, but this in no way makes the optic unusable at this level. The sighting adjustments are a little mushy, but you can feel each click. I was able to Ranger Wrap my 510c to match my A 300 and that was like icing on the cake for this tough little guy. One drawback is that it has an open emitter that could become dirty or occluded. After several range trips in dry dusty conditions, I have yet to experience a failure in function. This optic is a solid addition that you can depend on plus your wife won't kick you out after purchasing it!!
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Reviewed in the United States on October 26, 2024 by Craig Holt Craig Holt
Style: Red 2 MOA Dot & 65 MOA Circle (HS510C)
I waited almost a year after buying this to do a long-term review. To all the haters who told me I NEED to buy a top-tier optic like an Aimpoint or an Eotech and this isn't reliable, I can honestly say this optic is very sturdy and reliable. I've ran this in several competitions now, it's been thrown around in the back of a truck, been drenched in water, and been attached to a carbine with almost a thousand rounds of recoil and it has held zero and still as reliable as day one. I can hit 1/3rd ipsc targets at 100 yards without any problems, and I'm not exactly good. Granted, I don't abuse my equipment all that much, I'm not going to be taking this thing to war or running over it with a truck just to prove a point, but for 99% of "normal" applications this thing is rock solid. I shopped around a lot before buying this, compared against other brands, I get less "star burst" with my astigmatism compared to other brands of red dots (specifically the Sig branded ones are bad for my eyes), the optic is clear and the illumination is plenty bright for bright outdoor conditions with plenty of brightness settings for any situation (fwiw, the Vortex optics IMO don't have enough brightness settings, and don't get quite bright enough for direct sunlight, but an etched reticle can fix that problem). Holosun is the real deal. I might buy another one soon.
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Reviewed in the United States on April 26, 2022 by Shawn A
Style: Red 2 MOA Dot & 65 MOA Circle (HS510C)
I've had an RMR and a few Vorted red dots. The RMR had the dimming issue I resolved with an antiflicker plate and I loved it. The Vortex dots aren't sexy but they just work. I could punch a penny at 25 yards with both. This new Holosun however beats them all. The features, construction, and options put it above the competition at almost half the price. Perfect cowitness with the BUIS that came with my B&T GHM9. Took a considerable amount of left to right adjustment, but the up down was dead on. The shake to wake feature gives it true "Go Gun" status. No fiddling with buttons to turn it on. In a bad situation you don't want to have to try to turn one on when you really need it. Pulling it out of your bag will bring it to life and you're ready to rock. Autodimming is also a great feature my RMR and Vortex dots didn't have. Once enabled you will see a noticeable and immediate difference going from dark/dim to brighter areas. Works excellent outside. The feature is disabled by holding the + button for 3 seconds. This would be ideal if you're in a shaded environment and your target is outside in a brightly illuminated area. In the higher brightness settings you can still see the reticle when you point it towards the sun. You won't lose your dot in bright areas. The reticle options are also very hand. 2moa dot will help you plink pretty far down range and the larger 65moa reticle will give you fast acquisition at closer range. They defiently both have their place. And neither the RMR or Vortex dots offered multiple options. The battery life is supposed to be incredible. I haven't had it long to know, but all testing has shown you'll have years between battery changes. Keep in mind it does come with a spare battery tray so you if your grip has storage you can keep the included torx tool and spare battery with you when it becomes an issue. The solar feature is reassuring. Worst case scenario youre in the field or fight and the battery dies. If you are outside in the sun, or have enough ambient light the dot will still work. If SHTF and batteries are no longer available, you'll still be able to use it. The value, man.. It is just a no brainer. Half the price of an MRO or RMR. More features. More rugged design. The Alamaba Arsenal torture test includes, pouring water on it, throwing it 20ft into the air and letting it hit the ground, freezing it in ice, beating on it, and SHOOTING it with a shotgun, and it still held zero. The quick release mount also saves you an extra $150 if you were running other dots and allows for a perfect BUIS cowitness. Mine fit a little loose when I first installed it. I used the included tool and tightened the mount one turn and it clamped down with the force of an Amazonians thighs during Snoo Snoo. Absolutely solid now and still easy to release with the convenient latch keeper. The picture is incredible. The thinner profile sides and large viewing window give a natural feel and you're not chasing the dot around. No toilet paper tube EFFECT or black glob in the corner like with the Vortex Sparc AR. With boys eyes open you hardly notice the frame. You just see everything as well as a dot in your FOV. I will probably buy another one for my next Scorpion build. Can't imagine anyone coming out with a better optic for the money.
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Reviewed in the United States on March 23, 2019 by Marco Chavanne Marco Chavanne