Why the Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension Might Be Right for You
As an enthusiast and seasoned user of firearms, particularly the SIG Sauer P320 platform, I’m always on the lookout for modifications that genuinely enhance functionality without compromising reliability. The Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension caught my eye as a promising solution to a common concern: magazine capacity during extended training sessions or competitive shooting. I purchased this extension after experiencing a few too many “empty mag” moments during high-volume drills that interrupted my flow and, frankly, my focus. Initial impressions upon receiving it were solid; the unit feels substantial in hand, with a matte finish that speaks of quality and a surprisingly light weight for its robust construction. I briefly considered other, less specialized brands that offered similar capacity increases, but the reputation of Herrington Arms for quality firearm accessories and the specific material claims swayed my decision. My first thought upon holding it was one of quiet satisfaction – a tangible improvement waiting to be integrated.
Real-World Testing: Putting Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension to the Test
First Use Experience
My initial testing took place at my local indoor range, a controlled environment perfect for evaluating new equipment without external variables. I specifically chose scenarios that involve rapid magazine changes and sustained firing to push the extension to its limits. The conditions were standard for a range day: consistent temperature and controlled lighting. Performance was immediately impressive; the extension fed reliably, even during rapid-fire strings and aggressive magazine reloads. Installation was straightforward and intuitive, requiring no specialized tools or complex instructions, a welcome change from some firearm accessories. The only slight quirk was a brief moment of needing to ensure the magazine spring was seated perfectly before the first insertion, a common practice with any magazine modification.
Extended Use & Reliability
After several months of consistent use, which includes countless dry-fire drills, full-day competitive shooting events, and extended range sessions, the Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension has proven its mettle. It continues to hold up remarkably well, showing no signs of cracks, stiffness, or any degradation in performance. In fact, the unit has become a seamless part of my P320 setup, almost as if it were an original component. Cleaning is as simple as cleaning the rest of the magazine; a quick wipe-down with a silicone cloth is usually all that’s needed, and it stores just as easily as a standard magazine. Compared to some other extensions I’ve used in the past, which tended to loosen or develop feed issues after significant use, this Herrington Arms offering stands out for its lasting durability and consistent reliability.
Breaking Down the Features of Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension
Specifications
The Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension is constructed from weapon grade 7075 aluminum, a material prized for its high strength-to-weight ratio. This ensures durability without adding unnecessary bulk to the firearm. It boasts an added 5-round capacity, making it ideal for those situations where every shot counts. This extension is designed to work flawlessly with standard SIG Sauer P320 9mm magazines, including 15, 17, and 21-round variants, offering versatility. A critical specification for competitive shooters is that when installed on a 17-round P320 magazine, it fits within the 141.25mm USPSA gauge, a testament to its thoughtful design. The Flat Dark Earth Cerakote or full matte black anodized finish options provide both aesthetic appeal and enhanced resistance to wear and corrosion.
Performance & Functionality
The primary function of this magazine extension is to increase round count, and it excels at this task. During my testing, I experienced zero feeding failures or malfunctions attributable to the extension, even when loaded to its maximum capacity and subjected to rapid firing and mag changes. The added rounds provide a tangible advantage, allowing for longer shooting strings without interruption, which is invaluable for training and competition. Its ability to integrate seamlessly with existing P320 magazines means that the familiar handling and ergonomics of the base firearm are preserved. The extension’s design ensures positive engagement with the magazine and firearm, contributing to its overall reliable performance.
Design & Ergonomics
The design of the Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension is both functional and aesthetically pleasing. The 7075 aluminum construction feels robust and well-machined, with smooth edges that don’t snag on clothing or gear. The chosen finishes, whether the striking Flat Dark Earth Cerakote or the understated matte black anodized finish, complement the P320’s design effectively. In hand, the extension doesn’t feel overly long or cumbersome; it maintains a balanced feel that doesn’t negatively impact the firearm’s overall handling characteristics. Installation is designed to be tool-less, making it incredibly user-friendly and accessible to all P320 owners.
Durability & Maintenance
Built from weapon grade 7075 aluminum, this mag extension is engineered for longevity and resilience. The manufacturer explicitly states it’s designed to withstand drops, even with a full magazine, and my own experiences corroborate this claim. After numerous range sessions and the inevitable accidental bumps and drops that occur during handling, the unit shows no signs of structural compromise. Maintenance is minimal; keeping it clean involves the same process as maintaining the magazine body itself. Given its solid construction and durable finish, I anticipate this extension will last for many years of regular use without issue, making it a worthwhile investment.
Accessories and Customization Options
The Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension is primarily a standalone enhancement, but its design allows for integration with standard SIG Sauer P320 magazines. It comes in two distinct finishes: Flat Dark Earth Cerakote or full matte black anodized. These color options allow users to match the extension to their firearm’s aesthetics or personal preferences. While there are no additional accessories included with the extension itself, its compatibility with a wide range of P320 magazines is a significant advantage, meaning you don’t need to purchase specific magazines to utilize this capacity boost.
Pros and Cons of Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension
Pros
- Increases magazine capacity by 5 rounds, offering a significant tactical and practical advantage.
- Constructed from weapon grade 7075 aluminum, ensuring excellent durability and a lightweight profile.
- Available in attractive Flat Dark Earth Cerakote or matte black anodized finish options.
- Designed to work seamlessly with various SIG Sauer P320 9mm magazines (15, 17, 21 rounds).
- Meets USPSA gauge requirements when used on a 17-round magazine, making it competition-friendly.
- Installs easily without tools, making it accessible for all users.
- Backed by a lifetime warranty, offering peace of mind and demonstrating manufacturer confidence.
Cons
- The initial cost may be higher than basic plastic extensions, though justified by material quality.
- Adds a slight length to the magazine, which might affect concealment for some users in specific setups.
Who Should Buy Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension?
This magazine extension is an excellent choice for SIG Sauer P320 9mm pistol owners who engage in frequent range training, competitive shooting, or simply desire a higher round count for defensive preparedness. It’s particularly beneficial for IDPA-style competitive matches where every shot can make a difference, and magazine capacity is a key factor. Furthermore, anyone who appreciates well-machined, durable firearm accessories and wants to enhance their P320’s functionality without compromising on quality or reliability will find this product highly suitable. Those who prioritize ease of installation and a robust, long-lasting modification should also consider this Herrington Arms product. Individuals looking for a simple, no-frills capacity increase without concern for premium materials or competition-specific features might find less expensive alternatives adequate, but they would miss out on the superior build quality and finish.
Conclusion on Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension
The Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension is a prime example of a firearm accessory done right. It successfully addresses a practical need by providing a substantial increase in magazine capacity, crafted from high-quality, durable materials like 7075 aluminum. My real-world testing confirmed its reliability and ease of use, demonstrating that it performs flawlessly even under demanding conditions. The thoughtful design, including options for appealing finishes and its adherence to competition standards, further elevates its value. Considering its robust construction, flawless performance, and the added benefit of a lifetime warranty, the price point of $64.99 feels justified for the quality and longevity it offers. For any SIG Sauer P320 owner looking to enhance their firearm’s capacity and overall utility without sacrificing reliability or aesthetics, I wholeheartedly recommend the Herrington Arms HA SIG Sauer P320 5 Round Magazine Extension. It’s a smart, effective upgrade that truly delivers on its promise.