Hey, Freedom Gorillas! Today, we’re talking about the Holosun 507C X2 ACSS Vulcan - the co-branded optic between Holosun and Primary Arms - coming in red dot and green dot versions.
The optic boasts the award-winning ACSS Vulcan reticle, which features a 250 MOA outer ring for quick target acquisition and a 10 MOA center chevron for pinpoint accuracy.
Of course, we know it’s tough to choose the perfect optic without trying it firsthand. Don’t worry about it, though.
We took both ACSS Vulcan optics for a test drive ourselves.
What was the result? Read our review to find out. Below, you’ll find our detailed breakdown of the Holosun 507C X2 ACSS Vulcan reticle to help you figure out if this game-changing optic (and which one) is the right fit for your needs.
Let’s get started!
Product Highlights
Don’t have time to read the full review? Here’s a quick breakdown of what the Holosun 507C X2 ACSS Vulcan reticle has to offer:
- Choose from red or green reticles to suit your preference. The red dot version is $319.99, and the green dot version is $349.99.
- This reticle is ideal for beginners, competitive shooters, or everyday carry (EDC).
- Game-changing design simplifies “finding the dot,” especially for beginners or when shooting from unconventional positions.
- Features a 250 MOA outer ring to quickly guide you to the center chevron.
- Includes a 10 MOA chevron for a precise 0.5 MOA aiming point and built-in bullet drop compensator (BDC).
- The bottom of the chevron aligns with a 9mm impact point at 50 yards.
- Shake Awake technology to conserve battery life.
- Solar Failsafe for reliable operation even in low power.
- Auto + Manual Brightness Settings for adaptability in different lighting conditions.
- Side-removable battery tray for easy battery replacement.
- Durable Build: IP67 waterproof rating and 7075 aluminum housing for rugged use; backed by the Primary Arms Lifetime Warranty.
To learn more about the ACSS Vuclan reticles, check out our ACSS Vulcan Guide here.
| Buy the 507C X2 ACSS Vulcan Red Dot at The Best Price | Buy the 507C X2 ACSS Vulcan Green Dot at The Best Price |
Holosun 507C X2 ACSS Vulcan - Key Features & Dimensions
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Optic Type: Open Reflex Sight (Read more about open vs. closed emitter optics here). Reticle: ACSS Vulcan with a 10 MOA chevron with a 250 MOA outer ring (outer ring can be turned off). Mounting Footprint: RMR Footprint. Window Size: 0.63" high x 0.91" wide. Optic Size: 1.78" L x 1.14" H x 1.24" W. Weight: 1.5 oz. Battery: CR1632 Battery Life: 5,000 to 20,000 hours. 12 Brightness Levels: 10 for daylight and 2 for night vision. |
Features:
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Holosun 507C X2 ACSS Vulcan Reticles
The 507C X2 ACSS Vulcan comes in red or green reticle versions. It also features the ACSS Vulcan Reticle, with a 250 MOA outer ring and a 10 MOA chevron center dot. The outer ring can be toggled on or off by holding down the “-” button for 3 seconds. Here’s a quick overview of how the red and green reticle compare:
Red Dot Reticle
The red dot version of the Holosun 507C X2 ACSS Vulcan is a reliable choice for shooters who prefer a traditional reticle color. Featuring the ACSS Vulcan Reticle, the red reticle is both practical and cost-effective. It performs well in various lighting conditions, making it ideal for a wide range of scenarios.
Green Dot Reticle
The green dot version of the Holosun 507C X2 ACSS Vulcan is a great choice for those seeking enhanced visibility. The green reticle retains all the benefits of the ACSS Vulcan system but with a color that some users find easier to track. It does, however, come at a slightly higher price point.
Holosun 507C X2 ACSS Vulcan Pricing & Models
Although both reticle versions, green and red, of the Holosun 507C X2 ACSS Vulcan feature the same impressive 10 MOA chevron and 250 MOA outer ring, green reticles are more expensive than red. Why? Let’s break it down:
Why Are Green Dots More Expensive?
There are three main reasons for that:
- The Tech Behind It: The simplest answer is that Green LEDs are trickier and more expensive to produce than red ones. That extra effort in manufacturing is part of the reason for the higher price tag.
- Easier on the Eyes: Green light is naturally easier for the human eye to pick up, especially in daylight. If you’re shooting outdoors, a green reticle can feel like it’s practically glowing on your target. That enhanced visibility makes it a popular choice, which also bumps up the demand and price.
Red vs. Green Dot Models
The choice between red and green Holosun 507C X2 ACSS Vulcan reticle can be a tough one. Here are some key points to help you decide:
- Eye comfort: Green reticles are generally easier on the eyes, causing less strain.
- Astigmatism benefits: If you have astigmatism, red dots can appear blurry. Many customers with astigmatism report that green dots look crisper and clearer.
- Battery efficiency: Green dots are brighter at lower settings. For example, a green dot on brightness level 6 might match a red dot at level 7, which helps conserve battery life.
You can learn more about red vs green dots here.
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$319.99 
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$349.99 
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Holosun 507C X2 ACSS Vulcan Dimensions & Size
- Deck height: 8.72MM
- Width: 1.24"
- Length: 1.78"
- Height: 1.14"
- Window Size: .91" Wide, .63" Tall
- Weight: 1.5 oz
What I really like about the Holosun 507C X2 ACSS Vulcan is its compact and lightweight design. Weighing just 1.5 ounces, it keeps your firearm balanced and easy to handle. Its low profile and slim width reduce bulk, making it ideal for quick draws and smooth holstering.
The optic’s compact dimensions and its RMR footprint allow it to fit anything with an RMR footprint. The 0.91” x 0.63” window ensures a clear sight picture without adding unnecessary size. This blend of portability and functionality makes it a reliable choice for shooters who demand precision and ease of use.
Holosun 507C X2 ACSS Vulcan Footprint
The Holosun 507C X2 ACSS Vulcan is an RMR footprint optic. This means it will fit on any RMR footprint slide or adapter plate. Its design also ensures a secure, stable fit, enhancing shooting precision and reliability.
In general, if you have an existing RMR-compatible setup, the 507C X2 will integrate effortlessly without requiring additional hardware.
Overall, the 507C X2 is a versatile and convenient choice for shooters looking for a high-performance optic. Provided the firearm you want to mount it to has a slide, adapter plate, or mount with an RMR footprint.
Holosun 507C X2 ACSS Vulcan Intended Use
The Holosun 507C X2 ACSS Vulcan is an RMR footprint optic and a regular-sized pistol red dot. This means it is intended for use on any pistol with an RMR footprint or RMR adapter plate.
Most of the time, this means the pistol will be a full-size or compact such as a Glock 19 MOS or the S&W M&P 2.0. Make sure you know what footprint your gun is.
The 507C X2 ACSS Vulcan is not intended for and usually will not fit any micro-compact pistol like a Glock 43X MOS or Sig P365. For smaller pistols, you want to look at the 507K X2 ACSS Vulcan. This is because smaller micro-compact pistols usually come with a different footprint, like the RMSc or K series footprint.
The 507C X2 ACSS Vulcan can also be used as a rifle optic, PCC optic, or backup scope optic if you get an "RMR" picatinny or offset adapter found here.
In the Holosun 507C X2 ACSS Vulcan Box
The Holosun 507C X2 ACSS Vulcan box has everything you need for a seamless optic setup and maintenance, offering a wide range of useful accessories:
- 507C X2 ACSS Vulcan Optic: The star of the show, protected and ready for action.
- 1x CR1632 Battery (installed inside the optic): The included battery ensures your optic is ready to use right out of the box - no need for extra purchases or setup delays.
- Primary Arms Warranty Card: This card gives you peace of mind for your investment, backed by reliable customer support.
- Holosun Battery, Screws, & Adjustment Tool: These essentials make setup straightforward and ensure the optic stays securely mounted.
- Holosun Manual & Primary Arms Manual: Clear instructions from both manufacturers guide you through installation, adjustments, and maintenance.
- 4x 6-32 Screws (short), 4x 6-32 Screws (long): This variety provides flexibility to fit a variety of mounting options, making the optic adaptable to different setups.
- Lens Cloth: A handy addition to keep your glass clean and clear for maximum visibility.
Holosun 507C X2 ACSS Vulcan Fitment Info & Adapter Plates
In general, mounting the Holosun 507C X2 ACSS Vulcan on your pistol is straightforward, whether you have an optics-ready firearm or not.
We’ve included a table with detailed compatibility information for optics-ready pistols, ensuring you know exactly what’s needed for your model.
And what if your pistol isn’t optics-ready? No problem. You can use a dovetail mount that replaces your rear sights. These mounts make it possible to add the 507C X2 to nearly any platform without significant modifications. You can find all our dovetail mounts here.
*Note: Clicking on the pistol name below will take you to our fitment guide, which explains more about each platform.
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Anderson Manufacturing
Arsenal Democracy
Bul Armory
CZ
FN
Heckler & Koch
Kimber
Palmetto State Armory
Shadow Systems
Smith & Wesson
Staccato 2011
Taurus
Tisas
Wilson Combat
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Arex
Beretta
Canik
FMK
Glock
IWI
Nighthawk Custom
Sig Sauer
Springfield Armory
Stoeger
Walther
Zev
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Don't see your model listed? Check out our Fitment Guides Here.
Holosun 507C X2 ACSS Vulcan Review & Highlights
The Holosun 507C X2 ACSS Vulcan has a bit of a cult following - and for good reason. The ACSS Vulcan reticle, designed by Primary Arms, gives you more benefits than a standard reticle.
In-person, when looking at the optic with the center chevron dead center, you barely see the 250 MOA outer ring. That’s because the outer ring is made to act like an “aim assist” so you can find the “center dot” as quickly as possible.
Solving the “Finding the Dot” Issue
“Finding the Dot” is one of the biggest challenges for new to red dot shooters. In short, it refers to aligning the optic properly to see the dot in the window. This skill requires practice and muscle memory. However, the ACSS Vulcan reticle simplifies this learning curve with its large 250 MOA outer ring.
Essentially, when your “center dot” isn’t centered, you will see part of the 250 MOA outer ring. Once you see it, you quickly understand how you need to adjust your grip to see the center dot.
In our experience, this is great for new red dot shooters, competition shooters, and anyone who wants the added security of having that “aim assist” to find the dot.
Many competitive shooters have told us that the reticle helps them when shooting from odd positions, like shooting with your non-dominant hand, leaning sideways, or lying on your side.
We’ve also found the ACSS Vulcan helpful when clearing rooms or moving while keeping your pistol drawn in front of you.
The 10 MOA Chevron Advantage
Another highlight of the 507C X2 ACSS Vulcan is that the center dot is a 10 MOA chevron. This offers two key advantages:
- Pinpoint Precision: The chevron's tip measures just 0.5 MOA, making it one of the most precise reticles available.
- BDC Functionality: The bottom of the chevron acts as a ballistic drop compensator, indicating where a 9mm round will hit at 50 yards.
There is a third benefit, and that is that some people report that the 10 MOA chevron helps with their astigmatism.
We can’t really comment on whether it would be you or not, as everyone’s astigmatism is different, but it’s definitely worth noting.
Beyond the Reticle
The Holosun 507C X2 ACSS Vulcan retains all the features that make the standard 507C X2 so reliable:
- Shake Awake Technology: Activates the reticle instantly upon motion.
- Brightness Options: Auto and manual brightness settings.
- Solar Failsafe: Ensures continued operation under varying light conditions.
- Durable Housing: Made from 7075 T6 aluminum with an IP67 waterproof rating.
- Convenient Battery Access: A side-removable battery tray eliminates the need to remove the optic for battery changes.
It’s just a great reticle, well worth its price tag. It combines incredible versatility with practicality, making it one of the best pistol reticles on the market.
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Holosun 507C X2 ACSS Vulcan Downsides
As much as we love the Holosun 507C X2 ACSS Vulcan, it’s not without its flaws. Here are some downsides to consider before buying:
- Higher Price Point: The ACSS Vulcan version is more expensive than the standard 507C X2. While the additional features justify the cost for many, budget-conscious buyers may find the price a bit steep.
- Reduced Battery Life: The reticle design, particularly the 250 MOA outer ring, consumes more power. Battery life ranges between 5,000 to 20,000 hours, which is a bit less than a standard 507C.
Still, these downsides are relatively minor when weighed against the optic’s features and performance. However, they are worth keeping in mind to ensure the 507C X2 ACSS Vulcan aligns with your needs and preferences.
Holosun 507C X2 ACSS Vulcan Warranty
Since the Holosun 507C X2 ACSS Vulcan is a co-branded optic with Primary Arms, it actually falls under the Primary Arms warranty.
Primary Arms offers a lifetime warranty on all its optics. So, if you have any issues, you can contact Primary Arms, and they will fix them.
Also, when you purchase from Freedom Gorilla, if you have an issue within 30 days, we will replace the optic for you free of charge.
Final Thoughts
The Holosun 507C X2 ACSS Vulcan is an awesome pistol optic. If you are someone who values practicality and utility, then this is the optic for you. The features on the 507C X2 ACSS Vulcan are class-leading, and the ACSS Vulcan Reticle is probably the most well thought out pistol optic reticle on the market.
Whether you plan to use this reticle for duty, EDC, or competition, you can rest assured it will serve you very well.
We hope that we’ve answered all of your Holosun 507C X2 ACSS Vulcan queries, but if you have any further questions, feel free to reach out. Thanks for reading!
