The HS510C Open Reflex Circle Dot Sight has an open frame for a wide sight picture. It is powered by solar cell under normal usage, and a back-up battery to supplement power requirements in low light conditions. 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.
• Parallax free with unlimited eye relief.
• New advanced technology LED allows up to 50,000 hours of operation on one CR2032 battery
• 2 MOA dot and a 65 MOA ring
• Dot only, Ring only, or Dot and Ring reticle combinations
• Unlimited field of view
• Titanium-alloyed, shock resistant hood
• Powered by both battery and solar
• QD integrated
OPTICAL DATA | |
Light Source | LED |
Reticle | 2MOA Dot & 65MOA Ring |
Parallax Free | Yes |
Unlimited Eye Relief | Yes |
Magnification | 1x |
Multi-Coatings | Yes |
Integrated Laser | No |
ELECTRONIC DATA | |
Battery Type | CR2032 |
Battery Life | Up to 50,000 Hours |
Brightness Setting | 10 Daylight & 2 NV Compatible |
MECHANICAL DATA | |
Housing Material | 6061 Aluminum with Titanium Hood |
Surface Finish | MAO |
Housing Color | Black |
Adjustment per Click | 0.5 MOA |
W&E Travel Range | ±50 MOA |
Storage Temperature | -40℉ - 158℉ |
Working Temperature | -22℉ - 140℉ |
Submersion | IP67 |
Vibration | Up to 1000G |
PHYSICAL DATA | |
Window Size | 0.91in x 1.2in |
Dimension (in) | 3.3 x 1.6 x 1.8 |
Weight (oz) | 8.3 |
Central Height (in) | 1.41 |
(3)
Average rating 10 out of 10
( based on 3
reviews )

510C red dot sight.
I mounted this sight on a S&W Model 41. Fine sight with so many features and it worked great out of the box. Like the the 2 MOA dot for target. For steel need option for larger MOA dot.
Police Officer
This is the great product with great offering in one package. The field of view is great, dot very nice and round.
Outstanding Engineering, Quality and Price
This is the third Holosun 510C that I've purchased. I've replaced my EoTech circle-dot reflex sights with these. The features and circle clarity are superior, the quality is excellent and the price is about 60% of the equivalent EoTech model. The solar cell works great and allows the inexpensive backup wafer battery to last over a year.