HOLOSUN 510C Multi-Reticle 2 MOA Dot & 65 MOA Circle Open Reflex Sight - Solar FailSafe Shake-Awake, 12 Settings - Red/Green Reticle
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Availability:
In Stock.
Arrives
Tuesday, Sep 22
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Color: Black
Style: Multi-Reticle: Green
Features
- Multi-Reticle System (MRS): Choose between a 2 MOA dot, 65 MOA circle, or a circle-dot combination
- Solar Failsafe: Continuous operation powered by solar energy when ambient light is available
- Shake Awake Technology: Automatically activates the sight with motion, preserving battery life
- Quick Detach (QD) Mount with 1.41 dot height for easy installation and co-witness alignment
- Red Super LED: Provides up to 50,000 hours of battery life for reliable, long-lasting performance
Description
Since 2013, Holosun has been committed to creating innovative optic and laser/IR technologies for a broad range of shooting and hunting needs. Today, Holosun is at the forefront of developing new features including innovations such as; up to 100,000 hour battery life, Solar Failsafe technology, our signature Multi-Reticle System (MRS), and much more. We are obsessed with producing cutting-edge equipment at a price that astounds. Since 2013, Holosun has been committed to creating innovative optic and laser/IR technologies for a broad range of shooting and hunting needs. Today, Holosun is at the forefront of developing new features including innovations such as - up to a 100,000 hr battery life, Solar Fail-Safe technology, Our signature multi-reticle system (MRS), and much more. At Holosun, it's simple. We are obsessed with producing cutting-edge equipment with superior quality. Holosun is the industry leader in bringing feature-rich, high-quality products at a рrice that won't leave you stranded for ammo money. The HS510C and HE510C-GR are versatile open reflex optics for long gun applications. These sights are at home on carbines, PCCs, and shotguns due to their durable design. Aluminum housing with a titanium hood provides added shock resilience and includes a QD absolute co-witness mount (1.41" dot height). These rifle sights are packed with Holosun innovations including Solar Failsafe, Shake Awake, MRS (Multi-Reticle System), and Super LED with up to 50k hour battery life with 12 intensity settings.
Specs & Other Info
| Specification | Details |
|---|---|
| Package Dimensions (L x W x H) | 4.8 x 3.6 x 3.1 inches |
| Package Weight | 0.41 Kilograms |
| Product Dimensions (L x W x H) | 5 x 3.75 x 3.5 inches |
| Product Weight | 8.3 Ounces |
| Brand | HOLOSUN |
| Warranty | Limited Lifetime |
| Model | HE510C-GR |
| Color | Green |
| Construction Material | Aluminum & Titanium Hood |
| Target Audience | Unisex-adult |
| Quantity Included | 1 |
| Manufacturer | HOLOSUN |
| Part Number | HE510C-GR ELITE |
| Design | Elite Reflex Multi-Reticle System |
| Components Included | CR2032 Battery |
| Dimensions | 3.3 x 1.6 x 1.8 inches |
| Sport | Hunting |
| Use With Either Hand | Ambidextrous |
| Launch Date | August 17, 2017 |
Frequently asked questions
The Solar Failsafe feature on the HOLOSUN HE510C-GR allows the sight to remain powered when exposed to sunlight. This means if your battery dies, the sight can still function using solar energy. It automatically adjusts brightness based on ambient light conditions, ensuring optimal performance in all environments.
The HOLOSUN HE510C-GR offers models with either a red or a green dot option, but not both in one unit. You need to select your preferred color when purchasing. Each color variant retains the same features, including multi-reticle system (2 MOA dot and 65 MOA circle), shake awake, and waterproof capabilities.
Yes, the HOLOSUN HE510C-GR Open Reflex Sight is waterproof, making it suitable for use in rainy conditions and rugged outdoor environments. Its durable design ensures it can withstand adverse weather conditions, maintaining reliability and performance when you need it most.
The Shake Awake feature in the HOLOSUN HE510C-GR significantly conserves battery life by automatically deactivating the LED during periods of inactivity. Upon detecting any movement, the sight instantly powers on to your last brightness setting. This ensures that the sight is always ready when you need it, without having to manually turn it on and adjust settings.
Top Amazon Reviews
🚀 Abunda's Overview
This is our summary and key points to consider based on customer reviews.
The reviews highlight an overwhelmingly positive response to a high-quality, feature-packed optic suitable for firearms enthusiasts looking for reliability, durability, and precision. Critics laud its crisp field of view, easy installation, and innovative features like solar panels for battery preservation and shake-to-wake functionality for instant readiness. The product stands out in the optics market for offering exceptional value, primarily due to its robust construction, long battery life, and excellently designed reticle options catering to various lighting conditions and engagement ranges.
Pros
- 🔧 Great build quality and easy installation
- 🌞 Solar panel feature for extended battery life
- đź‘€ Crisp and clear field of view
- 🔋 Impressive battery longevity
- 🎯 Shake-to-wake functionality and excellent reticle options
- đź’ˇ Automatic brightness adjustment for different lighting scenarios
- âś… Exceptional value for the price
Cons
- đź’˛ Some may find it pricey
- 🔄 Possible need for additional riser for preferred height adjustment
- 🔩 Minor adjustments required for perfect fit and cowitness alignment
Should I Buy It?
If you're in the market for a versatile, high-quality optic that doesn't break the bank, this product is a stellar choice. Its blend of innovative features, robust design, and overall performance at almost half the cost of competitors makes it a valuable investment for both recreational shooters and tactical enthusiasts alike. Given its rave reviews across several critical aspects, it stands out as a top recommendation.
Color: Black
Style: Multi-Reticle: Green
I have no issues as of today with this sight. If your familiar with Holosun, you know they are typically of good quality and well built. These are as described, the shake-awake is a nice addition to a "bump in the night" set up. Green dot is easier to work with than red for me, perhaps due to my astigmatism, not sure, but it shows up better in daylight and low-light situations. Super easy to install. I'm typically not a fan of quick release mounts, but this one has held a real solid grip with no loosening yet. Looks sharp on an AR9 or any mid-sized unit. I've purchased several Holosuns and will always recommend them as a mid (heading towards upper) level dot optic. Glass is clear. Like the titanium "shell" that helps protect against bangs and bumps.
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Reviewed in the United States on August 29, 2026 by Ben B.
Color: Black
Style: Multi-Reticle: Green
Absolutely love this. It's my standard now for all my long guns. Very well made, durable, and the tech is awesome (auto sleep, solar failsafe, shake-awake). It just works without you having to think about it. Battery life is essentially a non-issue; I've had mine mounted and running for months without issue. The multi-reticle system works well, I run the circle-dot for fast target acquisition at close range and can switch to the 2 MOA dot when I need precision. Glass clarity and size is excellent, no distortion, and the 65 MOA circle is bright and crisp even in full sun. Mounting is solid, holds zero through hard use with no drift.
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Reviewed in the United States on June 5, 2026 by JWP06
Color: Black
Style: Multi-Reticle: Green
You may want to sit down for this.....I thought long and hard about this, and I couldn’t decide between the Holosun 510C or an EOTech. The prestige of an EOTech is hard to ignore. But once you actually compare them, the 510C just makes more sense. It’s lighter, the battery lasts ridiculously longer, larger window, solar panel, it can even run without a battery, and it has shake‑wake....which is the top reason in my opinion. People say the EOTech is built tougher, but then I watched a 510C abuse test. They threw it in the air 15 feet, multiple times, straight onto the ground. It kept zero. They froze it solid and defrosted it. It kept zero. (EOTech failed this test because it uses laser technology.) Then they shot it with a shotgun at 10 yards. Guess what… it still worked and kept zero. Titanium housing. If you’re telling me you need more durability than that, then your technique is clearly flawed ...it’s not the optic. I couldn’t justify paying more than twice as much just because the American military uses EOTech. Of course they use it...it’s American‑made, not because it's the best (but they are good nonetheless). I’d rather make the right choice than be a follower. I don’t mind EOTech, they’re great optics, but anyone talking smack about the 510C just because it’s not an EOTech is a follower who knows nothing and should be ignored. They’re both good, but Holosun takes the lead (unless you're using night vision). If so, ignore all this. Plus, I got the green reticle for the Florida sun...works great. It’s even basically “parallax free” like the EOTech. I’m very happy with this optic. Ukraine has been using it in real combat from my understanding. I’m not at war, and for home defense, CQB training, and range days, I’d rather have something lighter, with shake‑wake, and more than enough capability that can absolutely handle abuse. The whole “open emitter is a problem” argument is ridiculous. Show me someone who actually had an issue...and if you do find that one guy out of a million, ask him if the half‑second wipe actually mattered. If he jumped in a mud pool, his EOTech has to be wiped too. My Holosun will outlast the rest during the apocalypse, and when I can’t find a battery after 5 continuous years of operation, I’ve have the solar panel. The EOTech smack‑talkers will already be zombie food by then. In all seriousness, both are nice, but Holosun's new technology and design is currently ahead...all for half the price. It is what it is. More expensive doesn't mean better. I don't own a Gucci purse and I never will. It's a fad that gets too much credit. Only reason to get EOTech is if you must have American made...which is fine....but if you own a Samsung or drive a foreign car, then you already crossed that line. I'm looking for the best when it comes to my optic. The Holosun is great. If you weren’t considering Eotech anyways, then perfect....this one is very nice. I own several brands. Quality is much greater than price with this
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Reviewed in the United States on June 28, 2026 by Inspired
Color: Black
Style: Multi-Reticle: Green
It has been through about 370 rounds (About 250 were bird load) in 2 days. This HE510C-GR is great overall sight. Easy to use, easy to quick mount/QD (If it ever fails). It has an Eotech style reticle which is very crisp and clear; I'm settled with the 65MOA circle only for now since it's mostly for bird and 00 bucks. Most of my other sights are green(ACOG and RMR) because I can pick up that green reticle super quick and easy. No, it doesn't lose contrast when aiming at trees, I was able to hit two skeets this afternoon when they fly into the green leaves, and the range is also surrounded by trees. The fact it is solar and battery powered are great features for my use, and the auto on/off and brightness make this sight very smart. The auto brightness only goes from your setting to the max brightness is so thoughtful (which means I can change the minimum brightness anytime). And push both buttons can turn it off if I have absolutely no need to use the sight and push anyone to awake it to the previous setting is just convenient and will help extend the super long battery life. Shotguns in general are pretty rough on the sights, I had this sighted yesterday and it held zero just fine. The titanium hood has already protected the Al body from a few light scratches. The mount is pretty solid and I did try to QD it a few times for the training and it returned to zero no problem. This sight let me use the middle position for the M4's butt stock which is nice(as the picture is shown), the full length of pull is kind long for me, the middle position gives me less felt weight and shorter overall length (which makes the aim faster and less strenuously). It just let skeet shooting more fun and relaxing, and I can teach someone totally new to shotgun super quick on how to shoot it. I mean, shoulder the gun, both eyes open, put the circle on your target, pull the trigger (safely, of course), what can be more straight forward? Especially when you have a Benelli M4 with this sight? My friend(new to guns) started hitting flying clay within 5mins from I handed him the shotgun while teaching him how to use it.
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Reviewed in the United States on May 10, 2019 by John
Color: Black
Style: Multi-Reticle: Green
I have been using EOtech and wanted to try an alternative. This holosun is a good product. I have it mounted to an arms and it performed well. Was able to Zero it quickly. I’m happy with the purchase and would buy again. When comparing it to my EOtech: * the sights are clearer * has a little more features, * it’s slightly smaller * looks not as heavy duty (but I’m not trying to drop or bang it around).
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Reviewed in the United States on May 29, 2026 by TommyLion5
Color: Black
Style: Multi-Reticle: Green
Best green dot sight I own. Shake awake feature with auto on and off are the features I was looking for. I love the different reticle options and the green is highly visible. Holds zero incredibly well at 25 yds on my 9mm Pcc. Battery life is great with the solar fail safe just makes this an absolute must have for any firearm that allows for a picatinny mount. I would absolutely recommend this product.
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Reviewed in the United States on February 7, 2026 by Xavier F. Chavez II
Color: Black
Style: Multi-Reticle: Green
This is great for rifles. Just buy it.
Reviewed in the United States on July 27, 2026 by Big Daddy
Color: Black
Style: Multi-Reticle: Green
Jokingly, they should change their advertised "50k hours to 50k seconds (approx. 13hours) This is a well built optic- well, except for one major flaw. I'm not sure if I got a faulty unit that needs to be warrantied, but mine will drain/eat batteries (when turned fully off manually via + & - not even considering the "auto sleep/off function") within literally a week or two of inserting a new battery. I'll pull it out of my safe after a week of changing the battery, and it won't turn back on again until I replace the should-be-new battery. This is nowhere near the thousands of hours of claimed battery life. I'm a little dissapointed to be completely honest- especially given how annoying it is to unscrew the battery tray and literally have to pry it out of the housing. Another gripe of mine (and it isn't that big of a deal) is that in certain lighting conditions such as a light source shining directly down on the solar panel area (i.e. basically any time you're shooting in direct sunlight) , you can clearly see the emitter and board projected onto the glass. Anyways, other than that, this thing is rock solid. The titanium hood seems very protective and the dot/circle/combination is very clear. Not too sure if I'd buy it again though. I need to mess with it some more to make sure it's not somehow turning back on when placed in the safe by bumping the + or something. Edit: nope. Definitely is a short curcuit or something within the unit. Tried another battery and it's nearly dead 3 days later after being OFF and untouched after only 3 days. I should have bought a MRO. Submitted it to holosun under the warranty. Edit 2:To wrong the right, they sent me a whole different unit. the new optic works as it is supposed to (with no crazy battery drain issues), and holds zero. Great optic for the price, and an even better warranty. I think the windage rotation arrow is printed the wrong way on the unit though, but not a deal breaker like the battery usage was.
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Reviewed in the United States on August 30, 2019 by Alex