Primary Arms SLX RS-10 Problems You Should Know

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As someone who’s spent considerable time in the field with the Primary Arms SLx RS-10 red dot sight, I’ve come to appreciate its features and also identify some areas where it could be better. 

It’s been a journey of discovery, testing this sight in various conditions and pushing it to its limits. Through my hands-on experience, I’ve encountered a few Primary Arms SLX RS-10 problems that users might face with this optic. 

This article is aimed at guiding you through these challenges, ensuring that your experience with this red dot sight is as smooth and effective as possible. 

ProblemSolution
Reflection in Sight WindowAdjust mounting positions/angles.
Clarity Issues in Extreme LightManually adjust brightness settings.
Galaxy Effect in the WindowAdapt to it during regular shooting; focus on the center of the dot; practice under various movement conditions

Top 3 Primary Arms SLX RS-10 Issues & Solutions

1. Reflection in Sight Window

When using the Primary Arms SLx RS-10, I noticed a peculiar reflection issue within the sight window. This was more evident when the sight was mounted on rifles. Essentially, the up adjustment indicator’s reflection became visible in certain lighting and angles, which could be a bit distracting.

It seemed like a minor design oversight but had a noticeable impact during usage. Especially in dynamic shooting scenarios, this reflection could momentarily draw attention away from the target, which isn’t ideal. It’s a subtle issue, but once you notice it, it becomes hard to ignore, affecting the overall shooting experience.

Solution

To address the reflection problem in the sight window of the RS-10, I experimented with different mounting positions and angles. Adjusting the sight slightly can reduce the angle at which light enters, thus minimizing the reflection. 

For those using it on handguns, where this issue is less pronounced, maintaining a standard mounting position usually suffices. In cases where the reflection persists, I found that getting accustomed to its presence and focusing on the reticle helped. 

This isn’t an ideal solution, but it’s a practical workaround for an otherwise solid optic. 

2. Clarity Issues in Extreme Light Conditions

During my field tests with the Primary Arms SLx RS-10, I encountered some clarity issues under extreme lighting conditions. This was particularly noticeable on bright, sunny days or when transitioning between areas of high and low light. 

The red dot’s visibility fluctuated, sometimes appearing washed out or overly dim, depending on the intensity of the surrounding light. 

This variability in clarity can be a significant hindrance for shooters who require consistent sight performance across different environments.

Solution

To counteract the clarity issues in various lighting conditions, I found that manually adjusting the brightness settings was effective. The SLx RS-10 offers multiple brightness levels, which can be fine-tuned for optimal visibility. 

In extremely bright conditions, increasing the brightness helps the reticle stand out more distinctly. Conversely, in lower light scenarios, reducing the brightness prevents the dot from being overpowering.

3. A Blurry Effect in the Window

In my time using the Primary Arms SLx RS-10, I stumbled upon a peculiar phenomenon I’ve termed the ‘galaxy effect.’ This occurred when the sight experienced rapid, circular movements. 

Essentially, the red dot would blur and spread out, resembling a mini galaxy inside the sight window. While it’s quite an interesting visual, it’s not exactly what you want in a precision optic. 

However, in scenarios involving quick, dynamic movements, this visual distortion could potentially distract or disorient the shooter. This was especially true in drills where rapid target transition was key.

Solution

The galaxy effect, while noticeable, did not substantially impact the overall performance of the RS-10 in most practical shooting scenarios. 

My approach to addressing this was primarily to adapt to it. During regular shooting and target acquisition, this phenomenon was rarely an issue. It’s more of a visual quirk than a functional flaw. 

For shooters concerned about this effect, I recommend practicing with the sight under various movement conditions to get accustomed to it.

Training your focus on the center of the dot and ignoring the peripheral blur can mitigate the distraction it causes. 

Alternatives to Primary Arms SLX RS-10

1. Vortex Venom

The Vortex Venom is a highly regarded red dot sight known for its durability and clear optics. It offers a wide field of view and easy-to-use power and brightness controls, making it a top choice for both beginners and experienced shooters.

2. Burris Fastfire

The Burris Fastfire stands out with its lightweight design and precision accuracy. Ideal for both handguns and rifles, it offers quick target acquisition and is particularly favored for its ease of installation and reliable performance.

3. Crimson Trace CTS-1550

The Crimson Trace CTS-1550 is celebrated for its ultra-compact design and superior battery life. This red dot sight is perfect for compact carry pistols, providing clear sighting even in challenging light conditions, making it a versatile choice for everyday carry.

Final Verdict

After extensive testing and analysis, my verdict on the Primary Arms SLX RS-10 is that, despite its quirks, it stands as a reliable and effective red dot sight. 

Yes, it does have its issues, like the reflection in the sight window, clarity challenges in extreme lighting conditions, and the unique ‘galaxy effect.’ 

However, each of these problems can be mitigated with practical solutions. Whether it’s adjusting mounting positions, playing with brightness settings, or simply getting used to the sight’s idiosyncrasies, the RS-10 can be a dependable tool in a shooter’s arsenal.

FAQ’s

What footprint does the Primary Arms SLx RS-10 use?

The Primary Arms SLx RS-10 uses the commonly used Docter/Noblex footprint and includes an adapter plate for Glock MOS.

What is the field of view on a Primary Arms SLX 3x?

The field of view on a Primary Arms SLX 3x is 38.0 feet at 100 yards, providing excellent visibility for CQB situations.

Are Primary Arms optics waterproof?

Yes, Primary Arms optics are waterproof, fog resistant, and shockproof, with a durable hardcoat anodized finish.

Does Primary Arms offer a lifetime warranty?

Yes, Primary Arms offers a Limited Lifetime Warranty covering manufacturer defects, materials, workmanship problems, and even normal wear and tear, without requiring proof of purchase.

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