Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms optics and accessories. The Holosun HS510C Red Dot Sight 65 MOA Ring 2 MOA Dot with Solar Failsafe offers a versatile reticle and robust construction for various shooting applications. Its solar failsafe ensures continuous operation even if the battery dies. In stock now for $330.0.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
What are the specifications of the Holosun HS510C?
| Product Type | Open Reflex Red Dot Sight |
|---|---|
| Reticle | 65 MOA Ring & 2 MOA Dot |
| Reticle Color | Red |
| Magnification | 1x |
| Eye Relief | Unlimited |
| Adjustment Per Click | 0.5 MOA |
| Travel Range | +/- 50 MOA |
| Parallax Free | Yes |
| Battery Type | CR2032 |
| Battery Life | Up to 50,000 hours (dot only) |
| Brightness Settings | 10 Daylight & 2 NV Compatible |
| Housing Material | 6061-T6 Aluminum with Titanium Hood |
| Finish | Matte Black Anodized |
| Mount Type | Absolute Co-witness (Picatinny/Weaver) |
| Waterproof Rating | IP67 |
| Operating Temperature | -22°F to 140°F (-30°C to 60°C) |
| Weight | 4.94 oz |
| Dimensions | 3.3″ (L) x 1.6″ (W) x 2.2″ (H) |
| Country of Origin | China |
| Condition | New |
| SKU | HS510C |
What key features does the Holosun HS510C offer?
- Multi-Reticle System (MRS): Choose between a 2 MOA dot, a 65 MOA circle, or a 65 MOA circle with a 2 MOA dot, adapting to different shooting scenarios quickly.
- Solar Failsafe: This sight runs on solar power in bright conditions, extending battery life. If light is insufficient, it automatically switches to battery power.
- Shake Awake Technology: The sight powers down during periods of inactivity and instantly powers on when motion is detected, preserving battery life and ensuring readiness.
- Titanium Alloy Hood: The durable titanium hood protects the optical components from impacts and harsh conditions.
- Absolute Co-witness Mount: Comes with a QD mount that provides an absolute co-witness with standard AR-height iron sights.
- Parallax-Free & Unlimited Eye Relief: Offers a clear sight picture from any angle, making target acquisition fast and comfortable.
- IP67 Waterproof Rating: Designed to withstand submersion in water, ensuring reliability in wet environments.
Who is the Holosun HS510C for?
Buy it if:
- You’re looking for a versatile red dot sight for a rifle, carbine, or shotgun.
- You value long battery life and the redundancy of a solar power system.
- You want the flexibility of choosing between different reticle options for various shooting applications, from close-quarters to longer-range precision.
- You need a durable optic that can handle recoil and adverse weather conditions.
- You prefer an absolute co-witness with your iron sights on an AR platform.
- You’re participating in 3-Gun competitions or similar shooting sports where fast target acquisition is crucial.
Skip it if:
- You prefer a closed emitter design for extreme protection against debris (see our closed emitter optics for alternatives).
- You require a very compact red dot for a pistol slide (this is primarily a rifle/carbine optic).
- You’re on a very tight budget and only need a basic, entry-level red dot (explore our budget red dots).
How does the Holosun HS510C compare to other red dots?
| Feature | Holosun HS510C | Budget Red Dot (e.g., CVLIFE Red Dot) | Premium Red Dot (e.g., EOTech EXPS2) |
|---|---|---|---|
| Material | 6061-T6 Aluminum, Titanium Hood | Aluminum Alloy, often lower grade | Aluminum, often Type III hard anodized |
| Quality | Mid-tier, robust, feature-rich | Entry-level, functional, less durable | High-tier, military-grade, extremely durable |
| Compatibility | Picatinny/Weaver rails | Picatinny/Weaver rails | Picatinny rails |
| Shipping | Ships from Wichita, KS | Varies, often international or large warehouses | Varies, often from manufacturer or large retailers |
| Lifespan/Durability | Excellent, 50,000 hr battery, IP67 waterproof | Limited, shorter battery, less water resistance | Exceptional, long battery, very robust, fogproof |
| Price | $330.0 | ~$60-80 | ~$550+ |
Frequently Asked Questions about Red Dot Sights
What is the difference between MOA and MIL in optics?
MOA (Minute of Angle) and MIL (Milliradian) are both units of angular measurement used for scope adjustments and ranging. One MOA is approximately 1.047 inches at 100 yards, while one MIL is 3.6 inches at 100 yards. The choice often comes down to personal preference or what the shooter is accustomed to using.
How long does the battery last on the Holosun HS510C?
The Holosun HS510C boasts an impressive battery life of up to 50,000 hours when using the 2 MOA dot reticle setting. The solar failsafe technology helps extend this by operating on solar power in bright conditions, reducing reliance on the CR2032 battery.
Can the Holosun HS510C be used with a magnifier?
Yes, the Holosun HS510C is designed to be compatible with most magnifiers. Its open reflex design and standard height mount allow for simple integration with a flip-to-side magnifier, providing increased capability for longer-range targets.
Is the Holosun HS510C suitable for hunting?
Absolutely. The multi-reticle system, especially the 65 MOA circle, can be very useful for fast target acquisition on game, whether you’re hunting deer in the Kansas woods or coyotes in the open fields. The durable construction and reliable performance make it a solid choice for hunting applications.
What is the benefit of the solar failsafe feature?
The solar failsafe provides an extra layer of reliability. In bright conditions, the sight can run entirely on solar power, conserving battery life. If the battery dies or is removed, the sight will continue to function as long as there’s sufficient ambient light, ensuring you always have an operational optic.
Where can I buy red dot sights online?
You can purchase a wide selection of red dot sights, including the Holosun HS510C, directly from Kansas Gunshop at kansas-gunshop.com. We carry various optics to suit different needs and budgets.
What kind of warranty does Holosun offer on the HS510C?
Holosun generally offers a limited lifetime warranty on the optics housing, a 5-year warranty on the LED and internal components, and a 3-year warranty on the battery. It’s always a good idea to check Holosun’s official website for the most current and detailed warranty information.
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