CMMG ZEROED Mk9 Extended Ambi Magazine Catch Review

First Impressions of CMMG ZEROED Mk9 Extended Ambi Magazine Catch

The CMMG ZEROED Mk9 Extended Ambi Magazine Catch promises to solve a common frustration for left-handed shooters – magazine changes on an AR-platform rifle. CMMG, a well-regarded name in the AR parts market, aims to deliver ambidextrous functionality with an extended release bar for enhanced leverage. I’ve spent years awkwardly contorting my hands to release magazines with standard catches, so the appeal of a true ambidextrous solution is strong.

As a left-handed shooter, I’ve always struggled with the standard AR-15 magazine release. The position of the standard button forces me to either break my grip or use my trigger finger, which is far from ideal for speed and safety. This led me to search for a more ergonomic and efficient solution, hoping to find a magazine catch that would allow me to maintain a solid grip and quickly drop magazines with my support hand.

Upon receiving the CMMG ZEROED Mk9 Extended Ambi Magazine Catch, my initial impression was somewhat underwhelming. The finish appeared basic, and the extended release bar seemed potentially prone to accidental activation. I had hoped for a more refined design, especially considering the price point.

Compared to options like the NERO Ambi Mag Release or the Type A mag release, the CMMG ZEROED Mk9 Extended Ambi Magazine Catch seemed less robust and visually appealing. I chose to try this one primarily because of CMMG’s reputation and the promise of easy installation with mil-spec components, hoping it would prove more functional than aesthetically pleasing. My first impression was a mix of cautious optimism and a slight reservation about the overall design quality.

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Real-World Testing: Putting CMMG ZEROED Mk9 Extended Ambi Magazine Catch to the Test

First Use Experience

I tested the CMMG ZEROED Mk9 Extended Ambi Magazine Catch at my local shooting range during a practical rifle course. The weather was dry and mild, providing ideal conditions for assessing its performance. Installation was straightforward, dropping into my Mk9 lower receiver without any modification.

The initial experience was somewhat disappointing. The extended release bar made it easier to activate the magazine release from the left side, but I quickly noticed that it was too easy. I experienced several accidental magazine drops during drills as the extended tab snagged on my gear, especially when slinged.

Extended Use & Reliability

After several range trips and incorporating the CMMG ZEROED Mk9 Extended Ambi Magazine Catch into my training routine, the reliability issues persisted. While the ambidextrous functionality worked as advertised, the sensitivity of the extended release bar became a major drawback. The extended tab on the port side makes it way too easy to release the magazine.

The finish on the catch also began to show wear relatively quickly, with some slight chipping after only a few weeks of use. Cleaning was simple, but I found myself constantly checking the tightness of the screws to ensure proper function. Compared to my experience with other CMMG products, this one falls short in terms of durability and overall reliability.

Breaking Down the Features of CMMG ZEROED Mk9 Extended Ambi Magazine Catch

Specifications

• Manufacturer: CMMG
• Gun Make: CMMG
• Gun Model: CMMG Mk9
• Condition: New
• Condition Quality: Excellent (though durability issues emerged later)
• Ambidextrous Design: Allows magazine release from both sides of the rifle. This is the main selling point for left-handed shooters.
• Extended Release Bar: Provides increased leverage for easier magazine changes. The extension is both a pro and a con, leading to accidental releases.
• Compatibility: Works with mil-spec style and aftermarket magazine release buttons. Ensures wide compatibility with existing AR-15 components.
• Intended Use: Designed for the CMMG Mk9 platform, but can be adapted to other AR-15 lowers. The Mk9 designation suggests optimal performance with dedicated 9mm AR builds.

These specifications indicate a product intended for ease of use and broad compatibility. However, the real-world performance highlights significant trade-offs in terms of accidental magazine releases and durability.

Performance & Functionality

The CMMG ZEROED Mk9 Extended Ambi Magazine Catch functions as intended in terms of ambidextrous operation. The extended release bar undoubtedly makes it easier to drop magazines from the left side. However, the sensitivity of the release is a significant flaw.

The primary weakness is the ease with which the magazine can be accidentally released. This issue undermines the product’s overall effectiveness and could be detrimental in tactical situations. While it meets the basic expectation of ambidextrous functionality, the design requires significant improvement to address the accidental release problem.

Design & Ergonomics

The build quality appears adequate upon initial inspection, but the materials used don’t seem particularly robust. The extended release bar, while ergonomic in theory, protrudes excessively and contributes to the accidental release issue. The design prioritizes accessibility over security, which is a critical flaw.

The catch is easy to install, with no significant learning curve. However, the ergonomic benefit is outweighed by the practical disadvantages of the oversensitive release mechanism.

Durability & Maintenance

The finish on the CMMG ZEROED Mk9 Extended Ambi Magazine Catch shows signs of wear relatively quickly. The screws holding the assembly together require periodic tightening to maintain proper function. While cleaning is straightforward, the overall durability is questionable, especially compared to higher-end ambidextrous magazine catches.

I don’t expect this component to last as long as other parts on my rifle, and I am concerned about its long-term reliability under heavy use.

Accessories and Customization Options

The CMMG ZEROED Mk9 Extended Ambi Magazine Catch is designed to work with standard mil-spec and aftermarket magazine release buttons. You can customize the button itself to your preference. No other specific accessories are required or particularly relevant to this magazine catch.

Pros and Cons of CMMG ZEROED Mk9 Extended Ambi Magazine Catch

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Who Should Buy CMMG ZEROED Mk9 Extended Ambi Magazine Catch?

The CMMG ZEROED Mk9 Extended Ambi Magazine Catch might be suitable for casual range shooters who prioritize ease of access over security and ruggedness. It could also serve as an entry-level ambidextrous option for those on a very tight budget.

Competitive shooters or tactical users who demand reliable and secure magazine retention should skip this product. The risk of accidental magazine releases is too high for demanding applications. Must-have modifications would include finding a way to reduce the sensitivity of the release bar or replacing it altogether with a more robust design.

Conclusion on CMMG ZEROED Mk9 Extended Ambi Magazine Catch

The CMMG ZEROED Mk9 Extended Ambi Magazine Catch promises a convenient ambidextrous solution, but ultimately falls short due to its overly sensitive release mechanism. While the price is lower than some competitors, the trade-offs in reliability and durability are significant.

The value proposition is questionable given the risk of accidental magazine drops. I would not personally recommend this product, especially for serious shooters or tactical applications. There are better ambidextrous magazine catch options available, even if they come at a higher price point. Consider investing in a higher-quality option for increased reliability and peace of mind.