Holosun HE507C-GR-X2 Pistol Green Dot Sight - ACSS® Vulcan™ Reticle

Manufactured by Holosun
Manufactured by Holosun
59 Reviews

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

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The Holosun HE507C-GR-X2-ACSS is a new generation of pistol red dot sight packed full of features like the multiple reticle system, solar failsafe, and shake awake technology to ensure your reflex sight is always operational when you need it. On top of the two battery-saving techniques, the HE507C-GR-X2 reflex sight features up to 20,000-hour battery life on setting 6 with the CR1632 battery. This battery is located in a convenient tray that slides out and allows you to easily change it without having to remove the optic from your pistol. This model features the revolutionary, patented ACSS Vulcan reticle with an outer circle. It features 7075-T6 aluminum construction with an anodized black finish and fully multicoated glass for long-term durability that is backed by Holosun's limited lifetime warranty.

Note: Does not include picatinny mount.

  • Great for handguns, rifles, PCCs, and shotguns
  • Solar failsafe
  • Exclusive, patented ACSS Vulcan reticle
  • Large outer reference circle can be deactivated per user preference
  • 10 MOA center chevron
  • 2 Reticle modes
  • Shake awake technology
  • Green LED
  • Multicoated glass
  • 7075-T6 aluminum construction
  • Black hardcoat anodized
  • Convenient battery tray
  • Up to 20,000-hour battery life
  • Powered by (1) CR1632 Li Ion Battery
  • Holosun Limited Lifetime Warranty

The revolutionary patented ACSS Vulcan reticle provides a large circle guiding the eyes towards the 10 MOA center chevron, eliminating one of the biggest challenges for shooters new to slide-mounted red dots. If you are off-center, a portion of this outer circle will appear in the window to give you an instant reference on how to get centered. The circle phases out of the sight window completely when the center chevron is properly aligned in the sight window. This patented reticle function significantly improves sight acquisition. It takes the common frustration of hunting for the center reticle out of the equation. Don't need the circle? It can be easily deactivated to extend the battery even further.

Holosun Technologies is committed to creating innovative optic, laser/IR technologies for a broad range of shooting, hunting, law enforcement, and military needs. Using quality manufacturing standards, they provide military-grade optics without the military-grade price.
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Battery Life10,001 - 25,000 Hours
Battery TypeCR1632 3V Lithium Coin
Brightness12 Settings
Click Value1 MOA
FinishHardcoat Anodized
MaterialAluminum - 7075-T6
Night Vision CompatibleNight Vision Compatible
Reticle ColorGreen
Warrantylimited lifetime
Weight1.5 oz.
  • Vulcan Reticle for Combat Pistols |Tactical Rifleman
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

59 reviews


Green or Red the ACSS is the best version

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Great sight, I had the red version and it worked extremely well. My eyes pick up green better than red so that is why I made the switch! Great quality and hasn’t failed me yet!

Best dot out there

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Aging eyes aside the Holosun HE507C GR X2 with ACSS Vulcan Reticle is a game changer. No matter how experienced you are with a red dot this simply can’t be beat. Hope this reticle finds it way to other dots. The green is a much better choice for me.

Great Optic For Those With Astigmatism

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I already have scopes with ACSS reticles, so I am very fond of the "Chevron" in the reticle!. I have gone crazy about RMR's. They are a game changer on shooting your pistol more accurately. Also, the reticle on the HE507C-GR-X2 does not blur like other sights do with my astigmatism.


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I'm going to give this optic FIVE STARS. It was truly difficult to find an optic that would meet my criteria. Then came the Holosun HE507c-GR-X2.
I can see green better than red and I prefer a chevron over a dot. With the chevron I have a precise aiming point, I like that much better.
Once at the range, I found the optic to be extremely easy to sight-in. On a sandbag, I checked point of impact at 15yds with five rounds. I adjusted twelve clicks to the right and three up, DONE. I expect many years of use from this quality product.

Great for "my" astigmatism!


I already own a number of optics with the ACSS reticle for rifles and they've been a game changer for me! For some reason at pistol length red dots have always been a problem, more of a sun burst then a dot. But what made me chose green over the red version is when I switched the red fiber rod in one of my pistol sights for green after reading the eye picks up green better I couldn't believe how much better it was. So much better that as Primary Arms makes more of their ACSS reticle sights available in green I will be replacing the one's I already own! Hint hint!!!!

The green machine

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This is the optic you are looking for. Great for competition and tactical applications. I run my optics pretty hard, and I haven't lost zero at all. I bought the green because it was the only color available, but I would buy the red too.

Holosun ACSS Vulcan green dot

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This sight on my Glock 40 10mm is a perfect match! Allows the 10 to stretch its legs! Might buy another for an AR Pistol. Pew pew

Perfect for red color blind shooters


At 66 years of age, my eyes can no longer get a crisp sight picture of iron sights. I purchased two RMR's and discovered quickly that my red color blindness made them less than perfect for me.
The green dot is perfect and easy to see, plus the large outer ring let me have rapid sight centering as compared to the single dot of the RMR. I highly recommend this sight for fellow red color blind shooters.


by -

Had to buy a different plate to mount but definitely worth the money. Best dot/ACSS I've owned. Compared to the ACOG sheveron this optic is 100% better than the competition due to the circle corrective feature.

Excellent sight


As soon as you put this sight on you will recognize an obvious upgrade of at least +1.