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Guide to SAR9 Red Dot Compatibility: All Holosun's That Fit

Guide to SAR9 Red Dot Compatibility: All Holosun's That Fit

Mark Dymond |

If you’re checking out the SAR9, you’re probably already familiar with its reputation for comfort, reliability, and ease of use. But did you know that it’s also ready for a red dot right out of the box? The SAR9 and its variations come with a K series plate, making it super easy to mount any of Holosun’s K series footprint optics.

In this guide, we’ll walk you through which Holosun red dots fit the SAR9 and why they’re a great match. Whether you’re looking to up your game at the range or just want quicker target acquisition, here’s everything you need to know to get your SAR9 optic-ready.

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Which SAR9 models does this apply to?

  • Subcompact Gen2
  • Compact Gen3
  • Fullsize Gen3
  • Sport Gen3
  • Socom Compact
  • Socom Fullsize

Which Holosun Optics do we recommend for the SAR9?

 

Why do we recommend Holosun Optics vs other options?

Holosun optics offer the perfect balance of quality and affordability. Here are a few key reasons why we recommend them:

  • They provide exceptional battery life, and you can change the battery without removing the optic.
  • Available in both red and green reticles, with various sizes and styles to suit your preferences.
  • Built to last, they feature durable 7075 aluminum or titanium housings and high-quality glass.
  • Holosun optics are packed with convenient features like Shake Awake, easy-to-use brightness buttons, and side-mounted batteries for hassle-free maintenance.
  • Many models come with solar panels that keep the optic running even if the battery dies.
  • They are backed by a Limited Lifetime Warranty.
  • Known for their reliability, they are waterproof and have a solid reputation in the industry.

When compared to brands like Leupold, Trijicon, Crimson Trace, Burris, Bushnell, or Aimpoint, Holosun optics often stand out for being more affordable while offering more features, longer battery life, and a proven track record with millions of units sold over the past decade.

What optics footprint is the SAR9?

The SAR9 has a unique footprint but comes from the factory with a modified RMSc footprint adapter plate a.k.a. Holosun K Series. This means all the Holosun K Series optics will fit on the adapter plate. Replacement adapter plates can be found at SAR.

Best Modified RMSc Footprint Holosun Optics for the SAR9

Below are the best Holosun Red & Green dot sights you can mount on your SAR9 Optics Ready version with the included adapter plate. 

1. Holosun 407K Green & Red Dot - Best Budget Option

Holosun 407K Red Dot Sight - Affordable, 6 MOA Dot, Lightweight, Shake Awake, 50,000 Hr Battery, Waterproof.

Buy the 407K At The Best Price

This is the most affordable micro optic Holosun makes and is available in a 6 MOA green or red dot.

If you are looking for a single dot optic that is very affordable and great for plinking then this might be the one for you.

The 6 MOA dot is a really nice size. It's big enough to pick up rather easily, but still small enough to be precise with.

It has an aluminum housing, side removable battery, manual brightness controls, shake awake, is IP67 waterproof, and 50,000hrs of battery life.

Read our full 407K review here.

2. Holosun 507K Green & Red Dot - Best All Around Option

Holosun 507K Green Dot Sight - MRS Reticle, 32 MOA Circle + 2 MOA Dot.

Buy the 507K At The Best Price

The next step up from the 407K is the 507K. This has all the same features like an aluminum housing, side removable battery, manual brightness controls, shake awake, IP67 waterproof, and long battery life but it also has Holosun's Multi Reticle System (MRS).

The MRS Reticle is a 32 MOA Ring with a 2 MOA dot. It's really cool when you look at it - it's similar to an EOtech's reticle if you've ever seen them.

The other cool thing is you can toggle the reticle holding down the "-" for 3 seconds. So if you wanted to, you could use just the 32 MOA Ring, the 2 MOA Dot only, or both the 32 MOA Ring + the 2 MOA Dot.

Read our full 507K review here.

3. Holosun 507K ACSS Vulcan Green & Red Dot - Best Speciality Option

Holosun 507K ACSS Vulcan Red Dot Sight - 3 MOA Dot, 230 MOA Dotted Outer Ring.

Buy the 507K ACSS Vulcan At The Best Price

Next on the list is the 507K ACSS Vulcan. This is exactly like the 507K except is has the ACSS Vulcan reticle. This reticle has a 230 MOA dotted outer ring and a 3 MOA center dot.

The purpose of this reticle is to help you find the center dot quickly if you are off center. To learn more about the ACSS Vulcan reticle check out our article here.

The dotted outer ring can be turned off by holding down the "-" button for 3 seconds.

The main advantage of the ACSS Vulcan reticle is to be able to find the center dot quickly when drawing the pistol.

All the features are the same as the 507K except for the reticle, and this is available in both red & green.

Read our full 507K ACSS review here.

4. Holosun EPS Carry - Closed Emitter Option - Best Enclosed Emitter Option

Holosun EPS Carry Green Dot Sight - MRS Reticle, 32 MOA Circle + 2 MOA Dot, Enclosed Emitter.

Buy the EPS Carry At The Best Price

 The EPS Carry is very similar to the 407K and 507K except it has one major difference, it is an enclosed emitter optic. This means the laser emitter is protected by a hood. So dirt, mud, or debris will never get in the way of the emitter to distort the reticle. It also has the highest waterproof rating at IPX8.

There are 3 versions of the EPS Carry. The 2MOA, 6MOA, and MRS Versions

The MRS version has a solar panel on it which acts as a solar fail safe to power the reticle of the battery dies. It also gives you an extra auto brightness feature which can be toggled on or off.

Read our full EPS Carry review here.

    5. Holosun SCS Carry Green Dot - Best Solar Recharging Option

    Holosun SCS Carry

    Buy the SCS Carry At The Best Price

    The SCS Carry is similar to the EPS Carry in that it is an enclosed emitter, except it features Holosun's latest "Solar Recharging Technology". 

    It has an internal rechargeable battery with theoretical unlimited battery life. The battery has a 20K hour power reserve which is constantly being recharged. The optic charges the battery faster than it consumes. It has the MRS (multi reticle system) and is available in green dot only. You can use the 2 MOA dot, 2 MOA Dot + 32 MOA Circle, or 32 MOA Circle only.

    This model doesn't have Shake Awake like the others, but recommend from Holosun, you just leave it on and it will stay on. It is constantly recharging from natural and artificial light sources. It does have a power off button if you wanted to turn it off.

    This optic is a great option if you are looking for something super sleek, and where you never have to worry about batteries. Just turn it on and keep it on!

    Choosing between Red or Green Reticles

    Deciding on a red or green dot reticle? Here are a few key factors to help make the choice easier:

    • Eye Comfort: Green reticles are often gentler on the eyes and cause less strain, making them easier to focus on.
    • Astigmatism: If you have astigmatism, a green dot may appear sharper. Many users with astigmatism find that green dots provide a clearer view than red.
    • Background Contrast: Despite what some people think, green reticles won’t blend into natural green backgrounds like grass, trees, or foliage Which makes them great for outdoor settings.
    • Battery Efficiency: Since green appears brighter to the eye, a green dot at brightness level 6 can look as bright as a red dot at level 7, which can help extend battery life.

        If you want to learn more check out our full article about Red vs Green Dot Pros & Cons here.

        Choosing between Open vs Closed Emitters

        When deciding between an open or closed emitter for your SAR9, think about how and where you’ll be carrying it.

        If you expect to be outdoors in rough conditions—like rain, snow, or sleet—a closed emitter provides extra protection and reliability. For those carrying outside the waistband (OWB) and spending significant time outdoors, the closed design offers added peace of mind in harsh weather.

        However, if you typically carry inside the waistband (IWB) and aren’t often exposed to heavy rain or snow, an open emitter can serve you well.

        While open emitters hold up in many outdoor environments, closed designs add a layer of durability. It’s also worth noting that open sights may collect dust or debris on the reticle over time, so they’ll need regular cleaning. Closed emitters, on the other hand, are generally easier to maintain in terms of keeping the reticle clear.

        How to decide which reticle style is best for you

        In this guide we covered a few different reticle options. If you need some help deciding which is best for you here are some of our thoughts on each.

        • 2 MOA only : This dot is quite small which makes it precise. The downside is that it can be hard to “pick up” upon drawing the weapon. If you are experienced shooting red dot sights on pistols then this may not be an issue for you. If you are new, we recommend you practice “finding the dot” at home to become proficient. If you can train your muscle memory to find the dot then 2 MOA is a great choice.
        • 6 MOA only : This dot is decently larger than the 2 MOA dot. We classify this as more user friendly than the 2 MOA dot as it’s a bit easier to pick up upon drawing. The 6 MOA dot will not be as precise as the 2 MOA dot at long distances (50+ yards) but it is still plenty accurate at all distance ranges. The 6 MOA dot is a nice size and it gives you a less cluttered reticle. Some people prefer it over the MRS.
        • MRS Reticle (32 MOA Ring + 2 MOA Dot): This reticle is a good combination of both large and small. You have the 2 MOA dot to be precise with, and the 32 MOA Ring to help “find the dot”. The 32 MOA Circle is quite hard to miss. The nice thing about this reticle is the flexibility. You can use the 32 MOA Ring only or the 2 MOA dot only or both together. This way you can find what you prefer and stick to it.
        • ACSS Vulcan with 3 MOA Dot and 230 MOA Dotted Outer Ring : This reticle is going to have a 3 moa dot and the 230 MOA dotted outer ring. The outer ring is only visible when the dot is not centered. The purpose is to help you find the dot quicker upon drawing the weapon. The 3 MOA dot give you a slightly larger dot than the 2 MOA dot, but it’s not that noticeable. The real value to this reticle is the outer ring and it’s assistance with helping you get on target faster by quickly adjusting your grip to “find the dot”

        Conclusion

        In summary, there are several outstanding Holosun optic options that complement the SAR9 beautifully. Whether your priority is precision, quick target acquisition, or all-around versatility, there’s a red dot that will meet your needs. We encourage you to select the optic that best matches your intended use—be it for everyday carry, range practice, or personal defense. If you have any questions or need further guidance, don’t hesitate to reach out to us by comment, email, text, or phone—we’re here to help!

        Thank you for reading, and we hope this guide has made your choice easier!

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