Let’s Dive into CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd
The CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd promises to enhance the capacity of your FN Five-seveN magazines. It aims to do this without permanently altering the original magazine. In a world where every round counts, especially in certain regulated environments, a magazine extension is a potentially valuable addition to a firearm setup.
My interest in this product stemmed from a need to maximize my magazine capacity within legal constraints. Living in a state with a 10-round limit, the allure of a simple extension that could potentially push the boundaries without breaking the law was strong. I was also intrigued by the CMMG name, as I’ve had generally positive experiences with their other AR platform products.
Upon receiving the kit, the packaging was simple and functional. The extension itself felt lightweight, constructed from what appeared to be a durable polymer. My initial impression was cautiously optimistic, as I examined the components, consisting of the extension sleeve and a replacement spring. I compared it to a Strike Industries +5 extension I use on my Glock magazines; the Strike Industries felt more robust right out of the box.
I ultimately chose the CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd hoping for a seamless integration with my existing magazines. I was looking for a product that would provide a near-factory feel and reliability, rather than something that felt like an afterthought. My initial excitement was tempered by a hint of concern, stemming from some online feedback suggesting potential fitment and reliability issues.
Real-World Testing: Putting CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd to the Test
First Use Experience
My initial testing ground was my local indoor shooting range. I wanted a controlled environment to assess the CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd‘s reliability before trusting it in any serious scenario. I ran approximately 100 rounds through two magazines equipped with the extensions.
The performance, unfortunately, was subpar. I experienced multiple failures to feed, especially when the magazine was fully loaded. The initial excitement quickly faded, replaced by frustration as I repeatedly cleared malfunctions. The malfunctions were consistent regardless if the ammunition used was Federal, Fiocchi or FN Herstal factory ammunition.
Extended Use & Reliability
Over the next few weeks, I continued testing the extensions, hoping to identify any specific factors causing the issues. I meticulously cleaned and lubricated the magazines, experimented with different loading techniques, and even tried different brands of ammunition. The results remained consistently disappointing.
The durability seemed acceptable; the polymer extension itself showed no signs of wear or damage. However, the reliability issues overshadowed any potential long-term benefits. Compared to my previous experiences with other magazine extensions, such as those from Magpul and Taran Tactical Innovations, the CMMG kit fell far short of expectations.
Breaking Down the Features of CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd
Specifications
Manufacturer: CMMG.
Gun Make: FN Herstal.
Gun Model: FN Five-seveN.
Caliber: 5.7x28mm.
Magazine Capacity: 10 Round. It’s designed to work with existing 10-round magazines.
Finish: Black.
Condition: New. The product comes in a new, unassembled state.
These specifications are crucial because they dictate compatibility and intended use. The CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd is specifically designed for the FN Five-seveN pistol using 10-round magazines, limiting its application to that particular firearm and magazine type. The black finish is a standard aesthetic choice, while the “new” condition implies that the extension should be free from defects upon purchase.
Performance & Functionality
The primary function of the CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd is to seamlessly increase magazine capacity. Unfortunately, in my experience, it failed to deliver on this promise consistently. The reliability issues, particularly failures to feed, significantly hampered its performance.
The kit’s biggest weakness is its impact on magazine reliability. While the concept is sound, the execution seems to fall short of expectations. The product does not meet expectations due to the failures to feed during testing.
Design & Ergonomics
The CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd boasts a simple, streamlined design. The polymer material keeps the weight minimal. While lightweight, it doesn’t exude a sense of premium quality.
The installation process is straightforward, requiring minimal tools. However, ease of installation doesn’t compensate for the subsequent reliability problems. There is little to no learning curve when installing.
Durability & Maintenance
The polymer construction suggests reasonable durability for the CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd. The extension sleeve itself is unlikely to break under normal usage. Maintenance is simple, involving only occasional cleaning to remove debris.
The longevity of the spring is a potential concern, but I didn’t have the product long enough to assess its long-term performance. The product is easy to clean.
Accessories and Customization Options
The CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd is a self-contained unit with limited customization options. It does not directly interface with any external accessories, such as base pads or specialized followers. Compatibility is limited to the stock FN Five-seveN 10-round magazine.
Pros and Cons of CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd
Pros
- Simple installation process.
- Lightweight design.
- Relatively inexpensive compared to purchasing new magazines.
- Maintains the original magazine’s form factor.
- CMMG brand recognition for AR platform products.
Cons
- Unreliable feeding, especially when fully loaded.
- Questionable long-term spring durability.
- May require modification for proper fitment, as indicated by user feedback.
Who Should Buy CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd?
The CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd might appeal to Five-seveN owners in states with magazine capacity restrictions. Those looking for an inexpensive way to experiment with increased capacity may find it worthwhile. However, those who prioritize absolute reliability should likely skip this product.
A must-have modification would be a higher quality aftermarket spring, if one exists. A stronger spring may solve most of the failure to feed issues.
Conclusion on CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd
The CMMG, Inc Magazine Extension Kit, Five-seveN Pistol, 10rd promises a simple solution for increasing magazine capacity. However, its inconsistent performance raises significant concerns about its reliability. The value proposition is questionable, considering the potential for malfunctions.
I would not personally recommend this product in its current form. Potential buyers should carefully weigh the convenience of the extension against the risk of compromised reliability. Consider exploring alternative magazine options or high-quality extensions from other reputable manufacturers for the Five-seveN.