First Impressions of ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine
The ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine promises to be a cost-effective solution for those needing extra capacity for their sub-compact P320. With its steel construction and enhanced capacity, it aims to bridge the gap between concealability and firepower.
I often carry my Sig P320 sub-compact for concealed carry, but the limited capacity of the factory 12-round magazines has always been a slight concern. I was seeking a reliable way to increase my round count without sacrificing too much in terms of comfort or printing. This ProMag offering seemed like it might strike the right balance.
My first impression upon unboxing was that the ProMag magazine felt solid, if a bit heavier than the factory magazines. The steel construction gives it a robust feel, and the black oxide finish appears well-applied.
Compared to the factory Sig Sauer magazines and some aftermarket options from Mec-Gar, the ProMag felt less refined initially. However, the promise of 15 rounds at a significantly lower price point than factory extended magazines made it worth exploring. I chose the ProMag over other extended magazines due to its price and the positive reviews regarding its steel construction.
I was cautiously optimistic. While the build quality seemed decent, I knew the true test would be at the range.
Real-World Testing: Putting ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine to the Test
First Use Experience
I tested the ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine at my local outdoor shooting range. The conditions were sunny and mild, ideal for a relaxed range day.
The first few magazines performed flawlessly, with smooth feeding and reliable lock-back on empty. However, after about 50 rounds, I experienced a few failures to feed, where the slide would close on an empty chamber. This issue seemed intermittent but concerning.
I didn’t have to get used to it, the size is similar to the standard mag.
Extended Use & Reliability
After several weeks of use, the initial feeding issues with the ProMag magazine persisted, albeit less frequently. I estimate a failure rate of about 1-2 rounds per 100 after the initial break in.
The black oxide finish has held up well, with no signs of rust or significant wear. Cleaning is straightforward, as the magazine disassembles easily.
Compared to my experience with factory Sig Sauer magazines, the ProMag clearly falls short in terms of reliability. While the increased capacity is appreciated, the occasional malfunctions make it less trustworthy for serious defensive use.
Breaking Down the Features of ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine
Specifications
The ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine is designed for the Sig Sauer P320 Subcompact chambered in 9mm Luger. It boasts a 15-round capacity.
The magazine body is constructed of heat-treated steel for durability, and finished with a black oxide coating for corrosion resistance. The magazine spring is formed from heat-treated chrome silicone wire, intended for consistent and reliable feeding. The follower is injection molded from a durable polymer.
These specifications matter because they directly impact the magazine’s reliability and longevity. The steel construction and heat treatment should ensure durability and resistance to deformation under pressure. The chrome silicon spring is designed to maintain its strength and tension over extended use, preventing feeding issues.
Performance & Functionality
The ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine increases the capacity of a Sig P320 sub-compact pistol, offering a significant advantage in a defensive scenario. However, as mentioned earlier, its reliability is a concern.
The main strength is its increased capacity compared to the factory 12-round sub-compact magazines. The weakness lies in the occasional feeding issues. It mostly meets expectations, but has the intermittent failures to feed.
Design & Ergonomics
The ProMag magazine is designed to be a direct replacement for factory magazines. It seats securely in the magazine well of my Sig P320 sub-compact.
The build quality is acceptable for the price point, although not as refined as factory magazines. The magazine is easy to grip and insert, but some users may find the extended length slightly less comfortable for concealed carry.
Durability & Maintenance
The steel construction suggests that the ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine should be reasonably durable. Regular cleaning and lubrication of the spring and follower are recommended to maintain optimal performance.
Disassembly for cleaning is simple and requires no specialized tools. The durability is there, but not at the same level as OEM.
Accessories and Customization Options
The ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine does not come with any accessories. Since it’s a magazine, customization options are limited.
It is compatible with any P320 sub-compact that accepts standard Sig Sauer magazines, but compatibility with aftermarket baseplates may vary.
Pros and Cons of ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine
Pros
- Increased capacity from 12 to 15 rounds.
- Durable steel construction.
- Affordable price point compared to factory extended magazines.
- Easy to disassemble and clean.
- Provides a more substantial grip surface compared to the flush-fitting factory magazine.
Cons
- Occasional feeding issues, especially during initial use.
- May not be as reliable as factory Sig Sauer magazines.
- Slightly heavier than factory magazines.
Who Should Buy ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine?
The ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine is perfect for range shooters or those seeking an affordable way to increase their magazine capacity for practice. It can also be suitable for those who prioritize capacity over absolute reliability and are willing to accept the occasional malfunction.
Individuals who rely on their firearm for self-defense and demand unwavering reliability should probably skip this product. I would recommend sticking with factory Sig Sauer magazines or other higher-end aftermarket options.
A must-have modification would be diligent testing and a break-in period to identify any potential feeding issues before relying on the magazine.
Conclusion on ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine
The ProMag Steel Sig Sauer P320 Sub-Compact 9mm 15-Round Pistol Magazine offers an appealing combination of increased capacity and affordability. However, its inconsistent reliability is a significant drawback.
The price is justified for range use or as a backup magazine, but not for primary self-defense purposes. The intermittent malfunctions are the primary reason.
I would recommend this magazine with reservations. For casual range use or practice, the increased capacity is a definite plus. However, if your life depends on your firearm, I would strongly advise sticking with factory magazines or investing in higher-quality aftermarket alternatives. Test it thoroughly, and know its limitations before trusting it with your life.