First Impressions of ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine
The ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine immediately grabs your attention. It is a high-capacity drum magazine designed to feed your MP5 or PTR9 platform a serious amount of 9mm ammunition. The promise of 50 rounds of uninterrupted fun and firepower is a compelling one, especially for range days or scenarios where reloading isn’t an option. ProMag products often walk a fine line between affordability and reliability, so I was particularly interested to see where this drum mag fell on that spectrum.
I’ve always been on the lookout for ways to extend my time on the range without constantly reloading. The standard 30-round magazines are good, but a 50-round drum offers a different level of sustained fire. I have tried several high-capacity magazines in the past, but the experiences have been mixed.
The magazine arrived in a simple, no-frills package. Upon unboxing, I was immediately struck by the polymer construction. It felt surprisingly lightweight, which is a definite plus considering the potential weight when fully loaded. Compared to steel magazines, this one felt different, almost… cheaper? I picked this over other high-capacity magazines because of the ProMag name recognition, and the hope of getting a good value for the price.
My initial reaction was a mix of excitement and cautious optimism. The sheer capacity is alluring, but the polymer construction raised concerns about long-term durability. Time and range testing would be needed to see if it lived up to the hype.
Real-World Testing: Putting ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine to the Test
First Use Experience
I took the ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine to my local shooting range for its maiden voyage. The range offered a controlled environment with different target distances and shooting positions. I wanted to see how the magazine performed under moderate stress, simulating rapid firing scenarios.
The first few magazines cycled smoothly with standard 115-grain FMJ ammunition. However, after about 100 rounds, I experienced several failures to feed. The conditions were dry and relatively clean, so the malfunctions were unexpected.
Loading the magazine was simple enough. However, getting that last 10-15 rounds in was very difficult.
Extended Use & Reliability
After several range sessions and about 500 rounds through the ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine, the reliability issues persisted. While it performed adequately with some ammunition, it exhibited frequent failures to feed with others, especially when fully loaded. I also tried different brands of ammo, including 124-grain and 147-grain, with similar inconsistent results.
There were no obvious signs of wear and tear on the magazine body. The polymer seemed resilient, despite the malfunctions. Cleaning the magazine was straightforward, as it disassembles easily.
Compared to my experience with factory MP5 magazines, the ProMag fell short in terms of reliability. The factory magazines consistently perform flawlessly, while the ProMag was hit-or-miss, making it disappointing overall.
Breaking Down the Features of ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine
Specifications
- The ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine is designed for the Heckler & Koch MP5 and PTR9 platforms chambered in 9mm Luger. It is important to verify compatibility before purchase.
- It has a 50-round capacity, providing significantly more firepower than standard magazines. This is the main draw for most buyers.
- The magazine body is constructed from a proprietary DuPont Zytel-based polymer. This makes it lightweight but also raises questions about long-term durability compared to steel alternatives.
- The follower is injection-molded, and the magazine spring is formed from heat-treated chrome silicon wire. These components are critical for reliable feeding.
- It is a drum-style magazine, which allows for a high capacity in a relatively compact package. The drum design, however, can be bulky compared to stick magazines.
These specifications are crucial because they directly impact the magazine’s performance and reliability. The polymer construction influences its weight and resistance to wear, while the spring and follower determine the consistency of feeding.
Performance & Functionality
The ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine’s main job is to reliably feed 9mm ammunition into an MP5 or PTR9. Its performance in this regard was inconsistent. While it functioned adequately with some ammunition types, it experienced failures to feed with others.
The primary strength is its high capacity. However, the unreliability overshadowed this advantage. It definitely did not meet my expectations for consistent performance.
Design & Ergonomics
The ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine features a simple, functional design. The polymer body is lightweight and easy to grip. The weight is manageable even when fully loaded.
The magazine locks into the MP5/PTR9 magazine well securely, with no excessive wobble. There is a slight learning curve associated with loading the drum, particularly getting the last rounds in.
Durability & Maintenance
The polymer construction seems reasonably durable. It showed no signs of cracking or breaking during testing. Disassembly for cleaning and maintenance is straightforward.
Given the inconsistent reliability, the long-term lifespan of the internal components (spring, follower) is questionable. Regular cleaning and proper storage are essential to maximizing its lifespan.
Accessories and Customization Options
The ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine does not come with any specific accessories. No customization options are available beyond potential aftermarket followers or springs if desired. It is designed to function as a standalone high-capacity magazine, and its compatibility with other accessories is limited.
Pros and Cons of ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine
Pros
- High 50-round capacity: Extends shooting sessions and reduces the need for frequent reloads.
- Lightweight polymer construction: Reduces overall weight compared to steel magazines, especially when fully loaded.
- Relatively affordable price: Offers a high-capacity option at a lower price point compared to some competitors.
- Easy to disassemble and clean: Simple design allows for easy maintenance.
- It looks pretty cool when fitted to the gun.
Cons
- Inconsistent reliability: Suffers from failures to feed with certain types of ammunition.
- Polymer construction raises durability concerns: Might not be as robust as steel magazines in the long run.
- Difficult to load the last 10-15 rounds.
Who Should Buy ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine?
The ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine might be a good fit for recreational shooters who prioritize high capacity and are willing to experiment with different ammunition to find what works best. It could also be suitable for those looking for an affordable entry into high-capacity magazines for their MP5 or PTR9.
This product should be avoided by those who demand absolute reliability from their magazines, such as law enforcement or tactical users. Competition shooters who need consistent performance would also be better served by higher-quality magazines.
A must-have modification would be potentially upgrading the follower and spring to improve feeding reliability, but this would add to the overall cost.
Conclusion on ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine
The ProMag Polymer MP5/PTR9 9mm 50-Round Pistol Magazine offers a tempting combination of high capacity and affordability. However, its inconsistent reliability is a significant drawback. The value proposition is questionable, as the potential for malfunctions outweighs the benefits of increased firepower for many users.
I would not personally recommend this magazine for serious use without extensive testing and potential modifications to improve its reliability. It might be an acceptable option for casual range use if you’re willing to accept occasional failures.
If you’re considering this magazine, weigh the pros and cons carefully. If you prioritize sheer capacity over everything else and are willing to tinker with it, give it a shot. Otherwise, invest in higher-quality magazines for your MP5 or PTR9.