First Impressions of ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine
The ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine is an aftermarket magazine designed to significantly increase the capacity of Sig Pro series pistols. With a whopping 50-round capacity, this magazine promises extended shooting sessions and reduced reloading frequency. The allure of spending more time shooting and less time reloading immediately piqued my interest.
As someone with over a decade of experience in the tactical gear world, I’m always on the lookout for equipment that offers a tangible advantage in real-world scenarios. The primary reason I sought out this magazine was to increase the firepower of my Sig Pro SP2022 for range training and potential home defense situations. Standard capacity magazines can sometimes feel limiting during extended training drills.
Upon receiving the ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine, my initial impression was mixed. The magazine’s body is constructed from ProMag’s proprietary DuPont Zytel-based polymer, which felt reasonably sturdy. The weight, even unloaded, was considerable, suggesting the potential for significant heft when fully loaded.
Compared to the factory Sig Sauer magazines and a couple of Mec-Gar magazines I own, the ProMag felt noticeably less refined. I hoped this difference wouldn’t translate to functional issues. The factory magazines are known for their reliability, and the Mec-Gar magazines have also performed well for me over the years.
While my initial reaction wasn’t overwhelmingly positive, I remained cautiously optimistic. The potential benefits of a 50-round capacity outweighed my minor reservations about the build quality. I was eager to hit the range and see how it performed under actual firing conditions.
Real-World Testing: Putting ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine to the Test
First Use Experience
My first outing with the ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine was at my local outdoor shooting range. I wanted to assess its performance in a controlled environment. The weather was dry and mild, providing ideal conditions for testing.
Loading the magazine was a bit of a chore, even with a magazine loader. The spring tension is significant, making it difficult to fully load without assistance. Once loaded and inserted into my Sig Pro SP2022, the pistol felt noticeably heavier and slightly unbalanced. I experienced several failures to feed within the first 20 rounds.
Extended Use & Reliability
After several range trips and approximately 300 rounds through the ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine, the reliability issues persisted. Failures to feed remained a common occurrence. The polymer body has held up surprisingly well, with no visible cracks or damage.
Cleaning the magazine is straightforward, but the high spring tension makes disassembly and reassembly slightly challenging. Compared to my experience with factory Sig Sauer magazines, the ProMag falls short in terms of reliability and overall shooting experience. The factory magazines consistently cycle flawlessly. While the increased capacity is tempting, the reliability issues make it a hard sell.
Breaking Down the Features of ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine
Specifications
- The ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine is designed for Sig Sauer Pro SP2009 and SP2022 pistols chambered in 9mm Luger. Its most significant specification is its 50-round capacity.
- The magazine body is constructed from a DuPont Zytel-based polymer, providing a lightweight yet durable housing for the ammunition. The magazine spring is formed from heat-treated chrome silicon wire.
These specifications are important because they directly impact the magazine’s capacity, durability, and compatibility. The 50-round capacity allows for extended shooting sessions without frequent reloads. The polymer construction aims to balance weight and durability.
Performance & Functionality
The ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine struggles in terms of overall performance and functionality. The primary issue is its unreliability. Failures to feed are common, detracting from the shooting experience.
While the increased capacity is a definite strength, the magazine’s unreliability overshadows this benefit. I expected better performance, especially considering ProMag is a well-known manufacturer. The magazine unfortunately does not meet my expectations for reliable performance.
Design & Ergonomics
The ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine features a straightforward design. The polymer body is functional, but not particularly refined. The weight, when fully loaded, significantly alters the pistol’s balance.
The magazine is not exceptionally user-friendly. Loading requires significant effort. Disassembly for cleaning, while simple, is made more difficult by the high spring tension.
Durability & Maintenance
The polymer body of the ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine appears durable and should last a reasonable amount of time with proper care. Maintenance is relatively simple. Regular cleaning is essential to ensure proper function.
Accessories and Customization Options
The ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine doesn’t offer any specific accessories or customization options. Its functionality is limited to simply holding and feeding ammunition. Compatibility with magazine loaders is a plus.
Pros and Cons of ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine
Pros
- Significantly increased magazine capacity (50 rounds).
- Durable polymer construction.
- Relatively easy to disassemble for cleaning.
Cons
- Unreliable feeding, causing frequent malfunctions.
- Difficult to load without a magazine loader.
- Adds significant weight and imbalance to the pistol.
Who Should Buy ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine?
The ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine might appeal to recreational shooters who prioritize high capacity over absolute reliability and are willing to experiment. It could be considered by someone who wants maximum firepower at the range and is prepared to deal with potential malfunctions.
Serious shooters, law enforcement, or anyone relying on their firearm for self-defense should skip this product. Reliability is paramount in those situations. A quality, standard-capacity magazine is a better choice.
Must-have accessories include a reliable magazine loader.
Conclusion on ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine
The ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine promises a lot with its 50-round capacity. Unfortunately, it falls short in execution. The unreliability issues are simply too significant to ignore.
At a price of $93.99, the value proposition is questionable. Given the consistent feeding problems, the price is not justified. I would not personally recommend this magazine. The enhanced capacity doesn’t outweigh the consistent reliability issues.
While the idea of a 50-round magazine is appealing, the ProMag Polymer Sig Sauer Sig Pro 9mm 50-Round Pistol Magazine ultimately disappoints. Invest in reliable, standard-capacity magazines instead.