My first impression of Command Arms MCK 4-4.20mW Green Laser Sight
The Command Arms MCK 4-4.20mW Green Laser Sight promises to be a game-changer for anyone using a Micro Conversion Kit (MCK). Command Arms advertises seamless integration and improved target acquisition, enticing users to enhance their pistol platform. My experience with tactical accessories has taught me to approach such claims with a healthy dose of skepticism, which I will use in this review.
I needed a reliable aiming solution for low-light scenarios. Iron sights can be challenging to use in the dark, and I was looking for something more precise than a weapon-mounted light alone. I have used other laser aiming devices in the past, but was attracted to this due to its specifically designed integration into the MCK platform.
Upon unboxing, the laser sight felt reasonably solid. The adapter seemed well-machined, but the included battery felt suspiciously lightweight. My initial thought was that this was a decent piece of kit let down by cost-cutting in the battery department, a suspicion that, unfortunately, proved correct.
Compared to a Crimson Trace laser I use on my EDC, the Command Arms laser felt a little less refined. I was also considering a Streamlight TLR VIR II but the integrated aspect of the Command Arms MCK 4-4.20mW Green Laser Sight was more appealing. I picked the Command Arms MCK 4-4.20mW Green Laser Sight for what I hoped was a seamless integration with my MCK. Overall, I was cautiously optimistic, but that initial battery issue did raise a red flag.
Real-World Testing: Putting Command Arms MCK 4-4.20mW Green Laser Sight to the Test
First Use Experience
I tested the Command Arms MCK 4-4.20mW Green Laser Sight at an indoor shooting range, specifically focusing on low-light drills. The range provided a controlled environment to assess the laser’s effectiveness and ease of use. I also did some outdoor testing during dusk.
Under controlled indoor lighting, the green laser was easily visible, even against brightly colored targets. However, in the dusk testing, the laser was less noticeable. Initial accuracy was promising, requiring only minor adjustments to zero the laser. Sadly, within the first 20 minutes of use, the provided battery died.
Extended Use & Reliability
After replacing the original battery with a known, reliable CR123A, the laser performed much more consistently. I have now used it for several range sessions and in a low-light training course. The laser has held zero reasonably well.
After about a month of regular use, I’ve noticed some minor wear on the adapter where it interfaces with the MCK. It wipes clean and doesn’t affect function. Cleaning is straightforward; I simply wipe down the unit with a lightly oiled cloth after each use. Compared to my experience with other laser sights, once I swapped out the initial battery, the Command Arms MCK 4-4.20mW Green Laser Sight has been reliable, but that initial hiccup was frustrating.
Breaking Down the Features of Command Arms MCK 4-4.20mW Green Laser Sight
Specifications
The Command Arms MCK 4-4.20mW Green Laser Sight is designed for integration with Command Arms MCK platforms. It boasts a 4-4.20mW green laser output. The unit is powered by a single CR123A/3V battery.
The green laser is intended to provide superior visibility compared to red lasers, especially in daylight. The CR123A battery is a common and relatively inexpensive power source. The MCK-specific adapter ensures a secure and streamlined attachment.
Performance & Functionality
When functioning correctly with a good battery, the Command Arms MCK 4-4.20mW Green Laser Sight enhances target acquisition. It provides a clear aiming point, especially useful in low-light conditions. The laser held zero with only minor adjustments even after hundreds of rounds.
The initial battery issue was a significant weakness. The laser’s performance relies heavily on a good power source. Despite this, with a fresh CR123A installed, the laser meets expectations for close-quarters target engagement.
Design & Ergonomics
The unit’s design is simple and functional. The adapter is specifically shaped to fit securely within the MCK chassis. The weight is minimal.
The laser is intuitive to use. The ambidextrous on/off switch is easily accessible, though slightly mushy to the touch.
Durability & Maintenance
The laser body appears to be constructed from a durable polymer. This should withstand reasonable abuse. As mentioned, maintenance is simple; a quick wipe-down is all that’s needed.
With proper care, the Command Arms MCK 4-4.20mW Green Laser Sight should provide years of reliable service. However, be mindful of the battery contacts and ensure they are kept clean.
Accessories and Customization Options
The Command Arms MCK 4-4.20mW Green Laser Sight comes with the MCK adapter and a (low-quality) CR123A battery. There are no further customization options. However, the laser is designed to integrate seamlessly with other MCK accessories, such as weapon lights and slings. Command Arms doesn’t offer alternative adapters for other platforms.
Pros and Cons of Command Arms MCK 4-4.20mW Green Laser Sight
Pros
- Seamless integration with the Command Arms MCK platform.
- Highly visible green laser for rapid target acquisition.
- Simple and intuitive operation.
- Durable polymer construction.
- Ambidextrous on/off switch.
Cons
- The included battery is of poor quality and unreliable.
- Limited customization options.
- The on/off switch is slightly mushy.
Who Should Buy Command Arms MCK 4-4.20mW Green Laser Sight?
The Command Arms MCK 4-4.20mW Green Laser Sight is perfect for MCK owners who want to improve their low-light shooting capabilities. This laser is also ideal for those prioritizing rapid target acquisition in close-quarters scenarios. It is also beneficial to those with failing eyesight.
If you are not using a Command Arms MCK, this product will not be useful. Those looking for advanced features like adjustable brightness or IR lasers should look elsewhere. A good weapon light is a must-have accessory to compliment the laser.
Conclusion on Command Arms MCK 4-4.20mW Green Laser Sight
The Command Arms MCK 4-4.20mW Green Laser Sight is a mixed bag. Its primary strength lies in its seamless integration with the MCK platform and the visibility of its green laser. However, the poor quality of the included battery is a significant drawback.
At $195.00, the price is reasonable if you factor in the MCK-specific adapter. The cost is justified for those committed to the MCK ecosystem. I would recommend the Command Arms MCK 4-4.20mW Green Laser Sight, but only with the caveat that you immediately replace the included battery. This laser is a solid performer with a reliable power source. Consider buying one of these and drastically improving your MCK experience.