Swampfox Kingslayer review

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Hey Gunners! Welcome to My Swampfox Kingslayer review.

I’ve tried my fair share of red dot sights. But today, I’m super excited to dive into the ins and outs of the Swampfox Kingslayer. 

After spending ample time testing it, I’ve got some keen insights I can’t wait to share. Stick around, this one’s a game-changer!

Overview of the Swampfox Kingslayer

The Swampfox Kingslayer; just the name exudes confidence, doesn’t it? When you lay your eyes on it for the first time, you know it’s not your run-of-the-mill sight. 

Its compact and lightweight form screams efficiency, while the craftsmanship hints at the advanced technology lurking within. This is the kind of sight you’d want on your side, whether you’re on the range or in the field.

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Core Specifications of the Sight

MOA AdjustmentDial
Dot Size3 MOA
Lens Diameter22mm
Illumination Positions10
Battery TypeCR 1632
Max Battery Life1,500 hours
Lens CoatingMulti-Coated Ruby Red
Eye ReliefUnlimited
Mount TypePicatinny
ChassisAircraft grade aluminum
Windage/Elevation Range45 MOA / Total 90 MOA Range

First Look & Impression

Upon unboxing the Kingslayer, you immediately sense that this isn’t just another red dot sight. Everything from its streamlined construction to its robust frame speaks of quality and durability. 

At first glance, it promises a smooth user experience while leaving you curious about its performance.

Who Should Get the Swampfox Kingslayer

If you’re in the market for a sight that brings together technology, durability, and performance, then look no further. Whether you’re a seasoned pro or a newbie eager to up your game, the Kingslayer offers something for everyone.

Types of Guns Suitable for this Sight

  • Handguns with an RMR Footprint
  • Rifles with a Picatinny rail
  • Shotguns 

Top 7 Features of Swampfox Kingslayer

1. Reticle 

The Swampfox Kingslayer provides an outstanding range of reticle choices tailored to meet the needs of various shooters. You can select from three options: a 3 MOA dot, a red circle dot, or a green circle dot. 

Each of these offers its own set of advantages. The 3 MOA dot, for instance, occupies a minuscule three-inch circle at 100 yards, facilitating sharp, precise shots that require meticulous aim. The red and green circle dot reticles offer an alternative approach. 

They allow you to swiftly focus on the reticle and the target simultaneously, providing a unique balance of accuracy and speed. This adaptability makes the Kingslayer versatile enough to be useful in numerous shooting scenarios, from hunting to tactical applications.

My Testing

In my hands-on testing, I found each reticle type to serve specific functions effectively. When I used the 3 MOA dot, I found that it was excellent for hitting targets at long distances, even 100 yards out. The precision was awe-inspiring. 

On the other hand, the circle dot reticles were perfect for situations requiring rapid target acquisition, such as simulated tactical training. 

Switching between the reticles was straightforward, providing me with the necessary versatility to adapt to different shooting situations, from slow-paced and deliberate to fast and frenetic.

2. Smart Battery Management

One of the standout features of the Swampfox Kingslayer is its cutting-edge battery management system. Using a CR1632 battery, this sight is specifically designed for an extended operational lifespan. 

A distinctive feature here is the auto shut-off after four hours of no activity, making battery preservation an almost thoughtless process. 

The waking process is just as easy; all it takes is a single press of the UP button. Remarkably, the battery can last an impressive 1,500 hours. 

When it’s time for a change, you’ll find that the sight incorporates a user-friendly side tray mechanism that allows for a battery swap without necessitating re-zeroing of the optic.

My Testing

During my extensive time using the Kingslayer, I was thoroughly impressed with the efficiency of the battery management system. 

Even when I inadvertently left the sight activated for extended periods, the auto shut-off mechanism kicked in reliably, saving precious battery life. When I needed to replace the battery, the side-tray design made it incredibly convenient. 

3. Durability and Build Quality

When it comes to durability and resilience, the Kingslayer is nothing short of a marvel. The sight’s chassis is built from aircraft-grade aluminum, ensuring a robust, shockproof frame that can withstand a lot. It doesn’t end there; the sight also incorporates multiple specialty lens coatings. 

These include anti-fog, hydrophobic, and anti-scratch coatings. The coatings serve specific functions: the anti-fog prevents moisture collection, the hydrophobic coating repels water, and the anti-scratch protects the lens from surface damage. 

Additionally, the sight is both fog-proof and waterproof, giving you the peace of mind that you’ll have a clear sight picture in various challenging environmental conditions.

My Testing

To truly test the durability of the Kingslayer, I exposed it to an array of tough conditions. These included rainfall, heavy fog, and even a few accidental drops. 

The lens coatings worked phenomenally. Even in humid conditions that would fog up lesser optics, the Kingslayer’s lens remained clear, thanks to the anti-fog coating. When I subjected it to rain, the hydrophobic coating acted as an effective water-repellent. 

Surprisingly, even after a couple of accidental drops, the sight held its zero and showed no signs of wear or tear. This experience left me extremely confident in the Kingslayer’s construction and durability.

4. RMR Footprint and Mounting Flexibility

One of the strengths of the Kingslayer is its compatibility with a wide variety of firearm platforms, thanks to its RMR footprint scope base.

 This feature ensures maximum compatibility with pistol slides and is particularly beneficial for those looking for a sight that’s easy to mount. It also comes pre-assembled with a low-profile Picatinny rail mount in the box, allowing for quick and hassle-free installation. 

This universal approach to mounting provides the Kingslayer with an edge in adaptability, opening up a world of possibilities for different firearms, from pistols to rifles.

My Testing

During my evaluation, I took advantage of this feature by mounting the Kingslayer on several different platforms, including handguns and a rifle.

The RMR footprint allowed for straightforward mounting, and the Picatinny mount held sturdy during each test firing. 

The unit stayed secure and maintained its zero throughout. I found this adaptability to be a genuine plus, offering great value and versatility.

5. Illumination Settings

Illumination is crucial in a red dot sight, and the Kingslayer doesn’t disappoint. It offers a whopping 11 illumination settings tailored to suit any lighting condition you might find yourself in. 

The 10 brightness levels provide everything from subtle dots for low light conditions to intensely bright dots capable of standing out in full sunlight. 

It’s like having multiple sights in one; you get a tailored experience that adapts to your needs and environmental conditions.

My Testing

In my hands-on testing, I cycled through the various brightness levels during different times of the day, including dusk, noon, and an indoor range with subdued lighting. 

Each setting offered an optimized view, with the dot clearly visible against any background. The ability to toggle between these settings quickly meant I could adapt on the fly, enhancing both accuracy and speed in target acquisition.

6. Compact and Lightweight Design

What’s immediately striking about the Kingslayer is its compact size and lightweight nature. Weighing in at just 1 oz in pistol configuration, it’s one of the most lightweight sights you can find. 

The small footprint makes it ideal for those who value sleekness and maneuverability in their shooting experience.

My Testing

When mounted, the sight’s light weight was immediately noticeable. It didn’t add any noticeable heft to the firearm, making it easy to maintain a steady aim for extended periods. 

Despite its lightweight nature, it felt robust and well-built, offering the best of both worlds: durability without the extra weight. Maneuvering around corners and transitioning between targets was also a smoother experience, thanks to its compact size.

7. Lens Coating and Optics

The Kingslayer goes beyond standard lenses with its multi-coated Ruby Red lens. This state-of-the-art coating is designed to minimize glare and maximize light transmission. 

Furthermore, it features anti-fog and hydrophobic coatings to ensure clear vision regardless of weather conditions. 

These features collectively make for an optic that delivers excellent visual clarity, allowing you to focus on what matters the most: hitting your target.

My Testing

To really put the lens coatings to the test, I used the Kingslayer in a variety of settings, including direct sunlight and during a misty morning. 

The anti-glare coating did an excellent job of reducing glare, while the hydrophobic coating easily repelled the morning mist. 

No fogging occurred, allowing me a clear sight picture at all times. These coatings dramatically improved my shooting experience, making the Kingslayer’s optics some of the best I’ve seen in any red dot sight.

Footprint and Mounting Considerations

When it comes to the footprint and mounting, the Kingslayer is notably flexible and versatile. Its RMR footprint scope base is designed for optimum compatibility with a wide array of pistol slides. 

Additionally, it comes pre-assembled with a low-profile Picatinny rail mount, streamlining the mounting process. This is a significant advantage for those who want a quick setup without compromising on stability or functionality. 

Moreover, the Kingslayer is compatible with handguns, although a mounting plate or slide cut is required. This design makes it an adaptable and convenient choice for shooters looking for multi-platform compatibility.

Pros & Cons: Swampfox Kingslayer


  • Multiple Reticle Options: Choose from 3 MOA dot, red circle dot, or green circle dot reticles to suit your needs.
  • Battery Life: The CR1632 battery provides up to 1,500 hours of use and can be easily swapped without re-zeroing the optic.
  • Illumination Settings: 11 different settings for diverse lighting conditions.
  • Compact and Lightweight: Measures only 1.8″ x 1.1″ x 1″ and weighs just 1 oz in pistol configuration.
  • Advanced Lens Coating: Multi-Coated Ruby Red lens with anti-fog, hydrophobic, and anti-scratch coatings.
  • Versatile Mounting Options: RMR footprint for maximum compatibility with various pistol slides and included low-profile Picatinny rail mount.


  • Limited Reticle Style: No other reticle options apart from the circle and dot.
  • Auto Shut-Off: While the auto shut-off feature saves battery life, it could be inconvenient if forgotten about, requiring the UP button to wake the device.

Final Verdict

As a professional shooter, I’ve tried my fair share of red dot sights, and I can genuinely say that the Kingslayer brings a new level of excellence to the table. 

It performed exceptionally well in various shooting scenarios, offering both reliability and ease of use. If you’re looking for something that balances performance, durability, and user-friendly features, then this is the sight you’ll want to have on your firearm.

During my time with the Kingslayer, I found it to be an absolute game-changer. It made target acquisition faster and improved my overall shooting experience. 


Is the Swampfox Kingslayer always on?

No, the Kingslayer turns off automatically after 4 hours without button interaction.

Can Kingslayer’s Auto-Off be programmed?

No, the Auto Off feature is not programmable on the Kingslayer.

What is the difference between Swampfox Kingslayer and Liberty?

Liberty is narrower, has flush-fitting brightness buttons, a top-loading battery system, and allows for higher iron sights to co-witness.

Where is Swampfox Kingslayer made?

The Swampfox Kingslayer is manufactured in China.

Does the Kingslayer have a shake-awake feature?

No, the Kingslayer does not come with a shake-awake feature.

What is the battery life of the Swampfox Kingslayer?

The battery life of the Kingslayer is up to 1,500 hours.

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I'm Micheal, an avid shooter and hunting enthusiast from Texas. I'm a recreational shooter who loves to spend time at the range and enjoy learning about new firearms and gears. I love to write about guns and share my passion for shooting with others.

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