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HOLOSUN

HOLOSUN 510C & HM3X Combo RED/Green Multi-Reticle Circle Dot Open Reflex Sight w/3x Flip-to-Side Magnifier 510C-HM3X

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Availability: In Stock.
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Arrives Wednesday, Aug 12
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Color: BLACK


Style: RED RETICLE


Features

  • ADVANCED TECHNOLOGY: The Holosun HS510C New advanced technology LED allows up to 50,000 hours of operation on one CR2032 battery.
  • PROTECTIVE TITANIUM ALLOY HOOD: The Holosun HS510C Circle Dot Scope with 3 Reticle Options is waterproof down to 1m and durable enough for even the heaviest calibers.
  • EASY USE: The reticle can be switched between a 65 MOA circle with 2 MOA dot, a 2 MOA dot only, or a 65 MOA ring only at the push of a button. Better yet, the same LED projects both reticles, so no re-zeroing is necessary.
  • COMBO SET: Includes Holosun HS510c Reflex Sight, Holosun HM3X 3X Magnifier and a protective storage case.
  • PROTECTIVE STORAGE CASE: Includes protective storage case so you can keep your Holosun items safe at all times.

Description

The Holosun 510C & HM3X Combo provides a versatile and rugged sighting system designed for optimal performance in long gun applications. The 510C, a high- quality open reflex sight, pairs perfectly with the HM3X, a 3X magnifier, delivering unmatched flexibility and precision for tactical professionals, competitive shooters, and outdoor enthusiasts alike. This combo offers a seamless solution for close-range and mid-range engagements. The 510C features an aluminum housing with a titanium hood, ensuring durability and shock resilience in demanding environments. It includes advanced features like Solar Failsafe, Shake Awake Technology, and a Multi-Reticle System (MRS), allowing users to choose between a 2 MOA dot, 65 MOA circle, or a circle-dot combination for precise targeting. With a SuPer LED, the HS510C provides up to 50,000 hours of battery life on a single CR2032 battery, and 10 daylight and 2 NV compatible brightness settings for all lighting conditions. Paired with the HM3X, this combo extends your range with 3X magnification and a flip-to-the- side design for quick adjustments between close and medium-range targets. The HM3X features a QD mount, compatibility with both absolute and lower 1/3 co- witness optics, and provides 2.75” eye relief for comfortable viewing. It is also IP67 waterproof and shockproof, making it reliable in harsh conditions. Together, the 510C & HM3X Combo is an ideal solution for those seeking a rugged, flexible, and high-performance optic system for a variety of shooting scenarios.

Brand: HOLOSUN


Color: BLACK


Style: RED RETICLE


Product Dimensions: 3.3"L x 1.8"W x 2.31"H


Sport: Hunting


Item Weight: 4.96 ounces


Material: Aluminum, Titanium Hood


Magnification Maximum: 3 x


Objective Lens Diameter: 32 millimeters


Magnification Minimum: 3 x


Magnification Maximum: 3 x


Objective Lens Diameter: 32 millimeters


Magnification Minimum: 3 x


Compatible Devices: Rifle


Mounting Type: QD mount


Eye Relief: 7 centimeters


Aiming Scope Sight Pin Size: 1 millimeters


Thread Type: UNC


Reticle Type: Circle Dot


Item Dimensions L x W x H: 3.3"L x 1.8"W x 2.31"H


Item Weight: 4.96 ounces


Material Type: Aluminum, Titanium Hood


Color: BLACK


Product Style: RED RETICLE


Lens Color: Red


Brand Name: HOLOSUN


Sport Type: Hunting


Number of Packs: 1


Model Name: 510C / HM3X COMBO


Manufacturer: Holosun


Number of Items: 1


Unit Count: 2 Count


UPC: 605930625714


Included Components: Lens Cloth, Riser, Tool


Manufacturer Part Number: 510C-HM3X


Warranty Description: Limited Lifetime Manufacturer Defective Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 12

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.

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Top Amazon Reviews

    • Great product - you may need a 510-C spacer for AR platform
Color: BLACK Style: RED RETICLE
Great and solid product. Reliable, great combo. Great case and form fitted. Quick mount is fantastic, of course. The one thing i do not understand is that for an AR this is absolute co-witness (1.41 inches) and i have to push my face into the stock for alignment. There are included1/3 Co-Witness Spacer for both the red-dot and magnifier with the required screws. For the combined price and how solid this product is with quick release picatinny and along with the case - this is a great product. I may purchase another so that i do not fiddle with absolute zero between two different rifles when at the range. ... show more
Reviewed in the United States on June 4, 2026 by MxYz Pdlk
    • A game-changer for anyone in need of a versatile and highly effective optical solution
Color: BLACK Style: RED RETICLE
The HOLOSUN HS510C & 3X Magnifier Combo, featuring the HS510C red dot sight and the HM3X magnifier, is a game-changer for anyone in need of a versatile and highly effective optical solution. Here's why it unquestionably earns a perfect 5-star rating: Crystal-Clear Optics: The HS510C red dot sight provides a clear and crisp view, with a wide field of vision. The optical quality is outstanding, ensuring you can acquire targets quickly and accurately. Reticle Options: The sight offers various reticle options, allowing you to choose the one that suits your shooting style and preferences, whether it's a dot, circle, or both. The multiple brightness settings make it usable in various lighting conditions. 3X Magnifier: The included HM3X magnifier is a fantastic addition. It allows you to zoom in on your target for greater accuracy, making it an excellent choice for both short-range and long-range shooting. Flip-to-Side Design: The magnifier features a flip-to-side design, which means you can quickly move it out of the way when you don't need the extra magnification, and flip it into place when you do. Durable Construction: Both the red dot sight and the magnifier are built to withstand the rigors of shooting and outdoor use. They're robust and durable, designed for heavy-duty performance. Versatile Use: Whether you're into competitive shooting, tactical applications, or simply want to enhance your target acquisition, this combo is versatile and suitable for various scenarios. Quick and Easy Installation: The combo is straightforward to install and set up on your firearm, allowing you to start using it with minimal hassle. Value for Money: Considering the quality of the optics, the magnification options, and the versatility this combo provides, it offers excellent value for the price. In summary, the HOLOSUN HS510C & 3X Magnifier Combo is a 5-star optical marvel that excels in providing clear, versatile, and highly effective optics for your shooting needs. Whether you're a professional shooter, competitive sportsman, or someone who enjoys the precision of target practice, this combo is a reliable and valuable addition to your firearms setup. ... show more
Reviewed in the United States on October 19, 2023 by AAM
    • Worth every dollar
Color: BLACK Style: RED RETICLE
I’ve said before and I’ll keep saying it holosun is worth every penny to me. It’s super bright. Magnifier it’s my 3rd one so I know it’s quality. Battery seems to be an issue with some people but it could be an user error because I have never had any issues.
Reviewed in the United States on July 29, 2026 by AJ
    • Red dot and scope very good combo
Color: BLACK Style: RED RETICLE
Very good product. Used at the range on an AR rifle. Easy to dial in. I would recommend this to anyone. If you are looking at similar types of red dots there are plenty out there and 1 in particular that is way more expensive but still very good. My opinion if this is for the range or even competition shooting you cannot go wrong with this setup. ... show more
Reviewed in the United States on February 28, 2026 by Philip K.
    • Worth Every Penny.
Color: BLACK Style: RED RETICLE
High Quality and worth every penny. Don't think about it. You deserve a high quality optic and can't go wrong with HoloSun
Reviewed in the United States on April 29, 2026 by amy brown
    • Holosun 510c combo
Color: BLACK Style: RED RETICLE
The Holosun 510C and HM3X combo is a solid setup if you want speed up close and the option to reach out a bit farther. The 510C’s circle-dot reticle is quick to pick up and works great for close-quarters shooting, while the HM3X flips in easily when you want 3x magnification for mid-range shots. Build quality feels tough and dependable, and the glass is clear for the price. Battery life on the 510C is excellent thanks to the solar assist and shake-awake feature, so you’re not constantly worrying about it dying. The magnifier is smooth, holds zero well, and adds versatility without being a hassle. Overall, this combo offers great value, good performance, and flexibility for range use or a defensive rifle. It’s not the lightest setup out there, but for the money, it’s hard to beat ... show more
Reviewed in the United States on February 6, 2026 by William Burdick
    • Best sight combo on the market
Color: BLACK Style: RED RETICLE
I ordered this after seeing it in Ukraine war videos of operators using them. It is a very rugged well built sight. The glass is very clear and the reticle is far superior to any eotech. The mounting for the sight and magnifyer are rock solid and with the shim plate that is included the sight aligns perfectly with the magnifyer. Best sight value for the money ... show more
Reviewed in the United States on June 6, 2026 by kyle crispo
    • Great
Color: BLACK Style: RED RETICLE
Works great
Reviewed in the United States on June 16, 2026 by Patrick.D.Howard

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