Let’s Talk About Mean Arms 9mm Ejectored EndoMag – 3 Pack
The Mean Arms 9mm Ejectored EndoMag – 3 Pack offers a unique solution for AR-15 owners wanting to shoot 9mm without dedicated 9mm lowers. These magazine inserts convert standard 5.56/.223 PMAGs into 9mm magazines, utilizing a standard AR lower receiver and a 9mm upper with a Glock or Colt-style bolt carrier group (BCG). This product piqued my interest as someone who appreciates modularity and maximizing the utility of my existing AR platform.
I was initially drawn to the promise of a simple, cost-effective 9mm AR conversion. The idea of using my existing PMAGs and standard lower was far more appealing than investing in a dedicated 9mm lower receiver. The Mean Arms EndoMag system seemed like a smart way to add 9mm capability to my collection without adding another serialized firearm to the safe.
Upon receiving the Mean Arms 9mm Ejectored EndoMag – 3 Pack, my first impression was positive; the polymer construction felt robust enough, and the design seemed straightforward. The ejector being integrated into the magazine insert was a clever feature. It eliminated the need for modifications to the lower receiver.
I was considering a dedicated 9mm lower receiver and a CMMG Radial Delayed Blowback system before discovering the EndoMag. The EndoMag‘s appeal lay in its ease of integration and lower overall cost compared to those options, and the ability to use existing PMAGs. I also looked at other magazine well adapters, but they added bulk to the rifle.
My initial excitement was tempered by the all-plastic construction of the ejector. However, the promise of easy caliber conversion and cost savings was enough to warrant giving the Mean Arms 9mm Ejectored EndoMag – 3 Pack a try. I hoped these inserts would live up to the hype and provide a reliable 9mm AR experience.
Real-World Testing: Putting Mean Arms 9mm Ejectored EndoMag – 3 Pack to the Test
First Use Experience
I first tested the Mean Arms 9mm Ejectored EndoMag – 3 Pack at an indoor shooting range with a PSA 9mm upper receiver and a Glock-style BCG. The range offered a controlled environment to evaluate the magazine inserts’ performance with various 9mm ammunition types. I tested them with 115 grain FMJ, 124 grain FMJ, and 147 grain FMJ rounds.
During the initial range session, I encountered a few hiccups. One of the three EndoMags failed to lock the bolt back on the last round consistently. I also experienced a few failures to feed with the 147 grain rounds, which I attributed to the initial break-in period.
The EndoMag inserts were relatively easy to install into Gen 2 PMAGs, although loading the magazines proved a bit stiff initially. I did not experience any issues specific to cold or dusty environments at the indoor range. The initial results were mixed, but the potential was there.
Extended Use & Reliability
After several range trips and approximately 500 rounds through each of the Mean Arms 9mm Ejectored EndoMag inserts, reliability improved considerably. The bolt lock-back issue resolved itself after the first 100 rounds fired through the initially problematic magazine. I disassembled and thoroughly cleaned the inserts after each range trip.
Durability appears adequate, though the plastic ejectors show minor wear where they contact the BCG. I haven’t observed any cracks or significant degradation in the polymer construction, but I am mindful of its limitations. Overall, the EndoMags have held up reasonably well with consistent use.
Maintenance involves disassembling the EndoMag insert from the PMAG, wiping down the components, and ensuring the ejector is free from debris. Lubricating the ejector with a dry lubricant helps to ensure smooth operation. The simple design makes cleaning and maintenance straightforward.
Compared to using dedicated 9mm Glock magazines, the EndoMag system initially presented more challenges in terms of reliability and ease of loading. However, after the break-in period and some minor tuning, the EndoMag system provided a functional, albeit not flawless, 9mm AR experience. For a modular solution, it served its purpose.
Breaking Down the Features of Mean Arms 9mm Ejectored EndoMag – 3 Pack
Specifications
The Mean Arms 9mm Ejectored EndoMag – 3 Pack converts Gen 2 and Gen 3 5.56/.223 PMAGs into 9mm magazines. It features an integrated ejector, eliminating the need for modifications to the lower receiver. The inserts are constructed from polymer and are designed for use with Glock or Colt-style 9mm BCGs.
The magazine capacity is 10 rounds due to an internal capacity restrictor. These magazine inserts are compatible with AR-15 platform rifles. The pack includes three EndoMag inserts. The color is black.
The Mean Arms design allows users to quickly and easily change calibers in their AR-15. It enables the use of standard 5.56 multi-caliber lower receivers for 9mm. The use of PMAG accessories, such as mag pouches and caliber indicators, is maintained. No magwell adapter is required.
Performance & Functionality
The Mean Arms 9mm Ejectored EndoMag – 3 Pack performs its primary function of converting PMAGs into 9mm magazines reasonably well. Reliability improved significantly after an initial break-in period. The integrated ejector functions as intended, though its plastic construction raises concerns about long-term durability.
A key strength is the ability to use existing PMAGs and a standard AR lower receiver. A weakness is the initial break-in period and potential for needing minor tuning, such as trimming the ejector tab. The 10-round capacity is a limitation in free states, but the magazines can be modified to hold more rounds.
The Mean Arms 9mm Ejectored EndoMag – 3 Pack mostly meets expectations as a budget-friendly and modular 9mm conversion system. It does not quite match the reliability of dedicated 9mm magazines. It offers a convenient way to experiment with the 9mm AR platform.
Design & Ergonomics
The polymer construction of the Mean Arms 9mm Ejectored EndoMag inserts is lightweight and functional. The inserts fit snugly inside the PMAGs and do not add significant bulk. The integrated ejector is a clever design element that simplifies the conversion process.
The build quality is acceptable, though the plastic ejector could be a point of failure over time. The EndoMag inserts are generally user-friendly. They require some initial familiarization to ensure proper installation and loading.
Durability & Maintenance
The long-term durability of the Mean Arms 9mm Ejectored EndoMag – 3 Pack is a concern due to the plastic ejector. Regular maintenance, including cleaning and lubrication, should extend the life of the inserts. I estimate a reasonable lifespan of several thousand rounds per insert with proper care.
The maintenance is straightforward. Disassembly and cleaning can be completed quickly. Replacement parts, such as ejectors, are not readily available. The overall simplicity of the design should minimize potential repair issues.
Accessories and Customization Options
The Mean Arms 9mm Ejectored EndoMag – 3 Pack does not come with any included accessories beyond the three magazine inserts. Users can utilize existing PMAG accessories, such as magazine pouches and caliber indicators. There are limited customization options for the EndoMag inserts themselves, beyond modifying the capacity restrictor.
The EndoMag system is compatible with a wide range of AR-15 accessories, including triggers, stocks, and optics. The compatibility with standard PMAGs allows users to leverage a large ecosystem of existing magazine accessories. The use of Glock-style BCGs also opens up customization options on the upper receiver.
Pros and Cons of Mean Arms 9mm Ejectored EndoMag – 3 Pack
Pros
- Enables 9mm AR-15 builds with standard 5.56 lowers and PMAGs.
- Cost-effective compared to dedicated 9mm lowers.
- Maintains compatibility with most PMAG accessories.
- Integrated ejector simplifies the conversion process.
- Relatively easy to install and maintain.
Cons
- Plastic ejector raises concerns about long-term durability.
- Requires an initial break-in period for optimal reliability.
- 10-round capacity is restrictive in free states.
Who Should Buy Mean Arms 9mm Ejectored EndoMag – 3 Pack?
The Mean Arms 9mm Ejectored EndoMag – 3 Pack is perfect for budget-conscious AR-15 owners who want to experiment with the 9mm AR platform without investing in a dedicated lower receiver. It is also suitable for shooters who appreciate modularity and the ability to quickly switch calibers. This product is beneficial for those who already own a supply of PMAGs.
This product is not for shooters who prioritize absolute reliability above all else, or those who require high-capacity magazines. Individuals who prefer the simplicity and robustness of dedicated 9mm Glock or Colt magazines may also want to consider alternative options. Those engaging in high round count shooting might experience earlier than expected wear.
A must-have accessory is a reliable 9mm upper receiver with a Glock or Colt-style BCG that is known to function well with PMAGs. Depending on state regulations, modification of the capacity restrictor may be desired to increase magazine capacity. Regular cleaning and maintenance are also essential for optimal performance.
Conclusion on Mean Arms 9mm Ejectored EndoMag – 3 Pack
The Mean Arms 9mm Ejectored EndoMag – 3 Pack offers a clever and cost-effective solution for converting standard AR-15 lowers to 9mm. While not without its limitations, the system provides a functional and modular way to experiment with the 9mm AR platform. The Mean Arms EndoMag excels in giving shooters multi-caliber versatility without investing in a dedicated 9mm lower.
The price of $91.99 for a three-pack is generally justified, considering the cost savings compared to dedicated 9mm lowers. The value proposition lies in its modularity and the ability to leverage existing AR-15 components. The cost savings allow users to allocate funds to other components.
I would personally recommend the Mean Arms 9mm Ejectored EndoMag – 3 Pack to shooters who are looking for a budget-friendly and modular 9mm conversion system, and are willing to accept some minor compromises in reliability and durability. Embrace the versatility and expand the capabilities of your existing AR-15 today! Consider the Mean Arms 9mm Ejectored EndoMag – 3 Pack if you want to explore the world of 9mm ARs without breaking the bank.