First Impressions of JL Billet 9/40 Glock Double Stack Magazine Extension
The JL Billet 9/40 Glock Double Stack Magazine Extension promises enhanced capacity and improved handling for Glock owners seeking a competitive or tactical edge. JL Billet aims to deliver a product that’s both functional and aesthetically pleasing, constructed from aircraft-grade aluminum with a hard anodized finish. As someone who has spent countless hours on the range and in the field with various Glock platforms, I was eager to see if this extension lived up to the hype and addressed some common magazine-related issues I’ve encountered over the years.
I was initially drawn to this magazine extension as a potential solution to increase magazine capacity without sacrificing reliability or adding excessive bulk. I’ve often found myself wanting just a few extra rounds during training scenarios and competitions. I hoped the JL Billet extension would provide that extra edge.
Upon unboxing, the extension felt solid and well-machined, its black anodized finish giving it a professional look. The weight felt substantial, suggesting a durable build. Compared to other magazine extensions I’ve used, like those from Magpul and Taran Tactical Innovations, the JL Billet initially appeared to be a good middle-ground in terms of size and weight.
My initial impression was cautiously optimistic. The solid construction was promising, but I was also wary of potential fitment issues or reliability concerns, especially given the mixed user feedback about the retaining lips I saw online before purchasing. I knew the true test would come on the range.
Real-World Testing: Putting JL Billet 9/40 Glock Double Stack Magazine Extension to the Test
First Use Experience
I first tested the JL Billet 9/40 Glock Double Stack Magazine Extension at my local shooting range, using it with both Glock 17 and Glock 19 magazines. The weather was typical for an early autumn day – slightly cool and dry, perfect for shooting.
Installation was relatively straightforward, though the fit was tighter than expected, requiring a bit of force to seat the extension fully. The first few magazines loaded and seated without issue. However, I immediately noticed that the magazine seemed to shift slightly within the extension, as pointed out by another user.
During live fire, I experienced several failures to feed within the first 50 rounds, especially with the Glock 19 magazine. The Glock 17 magazine fared slightly better, but still experienced occasional hiccups. This immediately raised concerns about the extension’s reliability under pressure.
Extended Use & Reliability
After several weeks of continued use, including multiple range sessions and some dry-fire practice, my initial concerns about the JL Billet 9/40 Glock Double Stack Magazine Extension were unfortunately confirmed. The extensions did not hold up well, and in fact, began to damage the magazines themselves.
I started noticing significant wear and tear on the magazine base pads, particularly the retaining lips that secure the extension. As the initial reviewer noted, these lips appeared to be poorly designed and actually began to grind away at the polymer of the magazines.
The durability was disappointing, with the anodized finish showing scratches and wear marks relatively quickly. Cleaning was simple enough, but the fact that the extension contributed to damage on the magazines themselves was a major drawback. This is a significant disappointment and a major red flag for anyone considering this extension for serious use. It underperforms significantly, and I cannot recommend it based on my experience.
Breaking Down the Features of JL Billet 9/40 Glock Double Stack Magazine Extension
Specifications
The JL Billet 9/40 Glock Double Stack Magazine Extension is designed to increase the capacity of Glock 9mm and .40 S&W double stack magazines. It is advertised to add +3 rounds for 9mm and +2 rounds for .40 S&W.
The extension is constructed from 6065 Aluminum with a Type III Hardcoat Anodized finish for durability. It weighs approximately 1.3 oz. The extension is compatible with Glock models 17, 17L, 19, 19X, 26, 34, 22, 23, 27, and 35. These specifications initially appear promising, but the real-world performance paints a different picture.
Performance & Functionality
In terms of performance, the JL Billet 9/40 Glock Double Stack Magazine Extension falls short of expectations. While it does technically increase magazine capacity, the reliability issues and magazine damage make it a liability rather than an asset.
The primary weaknesses are the poorly designed retaining lips and the tendency for the magazine to shift within the extension. These flaws lead to feeding problems and potential magazine damage. This fails to meet the expectation of reliable increased capacity.
Design & Ergonomics
The JL Billet 9/40 Glock Double Stack Magazine Extension boasts a streamlined design that blends well with the Glock aesthetics. The build quality initially appears solid, but the choice of aluminum, while lightweight, may not be the most durable for this specific application.
While user-friendly in terms of installation, the slight shifting and potential for damage detract significantly from the overall ergonomic experience. There is a clear design flaw that needs to be addressed by JL Billet.
Durability & Maintenance
The advertised Type III Hardcoat Anodized finish is supposed to ensure longevity, but it scratches relatively easily. The extension itself seems durable enough, but the damage it inflicts on the magazines is a major concern.
Maintenance is straightforward, requiring only occasional cleaning. However, the long-term durability is questionable, given the wear and tear observed after only a few weeks of use.
Accessories and Customization Options
The JL Billet 9/40 Glock Double Stack Magazine Extension does not come with any additional accessories. There are no customization options available beyond the stock black anodized finish.
While the extension itself doesn’t offer further customization, it is compatible with standard Glock magazines, but as highlighted earlier, it can also damage them. This limited accessory and customization options are not a major drawback, but it would be nice to see JL Billet offer replacement parts or alternative finishes in the future.
Pros and Cons of JL Billet 9/40 Glock Double Stack Magazine Extension
Pros
- Increased magazine capacity (+2/3 rounds).
- Solid aluminum construction.
- Aesthetically pleasing design.
Cons
- Unreliable feeding issues.
- Damages OEM Glock magazines.
- Questionable long-term durability.
Who Should Buy JL Billet 9/40 Glock Double Stack Magazine Extension?
The JL Billet 9/40 Glock Double Stack Magazine Extension is not suitable for serious users, competitive shooters, or anyone relying on their firearm for self-defense. Its reliability issues and potential to damage magazines make it a risky choice for critical applications.
This product should be skipped by anyone seeking a reliable and durable magazine extension. There are better alternatives on the market that offer increased capacity without compromising performance.
Conclusion on JL Billet 9/40 Glock Double Stack Magazine Extension
The JL Billet 9/40 Glock Double Stack Magazine Extension promised enhanced capacity and improved handling, but it ultimately falls short due to reliability issues and a design flaw that damages magazines. The price of $24.99 is not justified given its performance.
I would not personally recommend this product. The risk of feeding issues and magazine damage outweighs any potential benefits. There are more reliable and durable options available on the market. Save your money and invest in a more reputable magazine extension.