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Your cart is empty.The HS510C Open Reflex Sight with Circle/Dot Green Reticles has an open frame for a wide sight picture. It is powered by a CR2032 batter with Holosun's innovative Solar Failsafe back up. Equipped with Multi-reticle system, the green 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.
Ashton Blaine
Reviewed in the United States on March 31, 2025
I returned mine after buying the wrong color and I didn’t receive a refund for 4 months. Other than that these are top quality reflex sights. Right under eotech in my opinion
M. & P. Millar
Reviewed in the United States on February 11, 2025
This site feels like a well-built item.The green reticle is VERY easy to see, especially in daylight. I have some eyesight issues and sometimes have difficulty with iron sights. I have no issues with this sight. I like the open window design which makes it easier to keep an eye on everything outside the sight window.I will definitely be buying a few more of theses for my other rifles.
Azad E.
Reviewed in the United States on April 2, 2025
I tend to stick with the tried and true brands like Trijicon, but I wanted to try this brand. I’m impressed with how well made this is. Nice glass, great visibility of green dot.Very cool kit.
R & L
Reviewed in the United States on March 1, 2024
I was looking at several brands. Some pricey some cheap. After watching You Tube videos for hours and reading all the Amazon reviews took a chance and boy did, I do good...!!! This is amazing for the price. It is way better than I expected. People have a tendency to stretch the truth sometimes. So, I was leery. But man, oh man is this a nice sight. For the money, you cannot do better than this. No way, no how. Green isn't really green. It's more of a green gold. Super nice. Dial it up or down till you find perfection. Great Buy...!!! Built like a tank...!!!
Jesse
Reviewed in the United States on February 28, 2024
After reading a lot of reviews I bought this for my 300 Blackout. My 5.56 I have an Sig Romeo 5 for. I love Sig but I like this holosun so much more. It’s titanium, the window is huge with zero glare. As soon as you raise it your locked onto target and you can easily shoot with both eyes open. It has a solar panel so no need to worry about batteries and it auto turns on when you grab the gun. I paid $330 for this and $500 for my Sig. the only con is it’s made in China. Highly recommend
john l.
Reviewed in the United States on December 4, 2024
Does same thing and half as much. Has features that make me happy. Shake awake, solar backup, solid construction. I'm now a fan of Holosun. Got the 3x magnifier also Nice combo to terminate dangerous predators
Jacob L. Grandpre
Reviewed in the United States on November 23, 2024
This optic is compact, very light weight and seems to be built quite tough. QD base is easy to use and solid. Love the green color reticle, very bright in daylight compared to red. But The reticle is not very crisp, with fuzzy edges, which makes it impossible to hit an ear at 100 yards!
Eric B
Reviewed in the United States on August 29, 2022
They are listed as new, but come with the battery installed. Not how Holosun ships them out. I believe they are demo or display models. For the offered discount, I have no complaints. I replace the battery first, then take them out to the range. No issues. Great optic and with the height, I can use iron sights for distance if needed.The mount quickly attaches itself to the rail & you are ready to go or remove the optics with the flip of a switch. I have been hard on these optics and I have not lost or broken one. Hope this record keeps trending.
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