First Impressions of CMMG DISSENT 9mm, 6.5in Upper Receiver
The CMMG DISSENT 9mm, 6.5in Upper Receiver arrived, and I immediately knew this wasn’t just another AR upper. This upper promised a unique blend of compactness and modularity, addressing the gray areas surrounding AR pistol braces. The CMMG DISSENT represents a bold step in firearm design, and I was eager to see if it lived up to the hype.
I’ve always been drawn to unconventional firearms, especially those that offer solutions to specific needs. Mounting concerns over AR pistol regulations were definitely the driving force, and that’s what piqued my interest in the CMMG DISSENT. The promise of a bufferless AR-style platform in 9mm was too intriguing to ignore.
Unboxing revealed a sleek, well-machined upper receiver. The compact action was immediately apparent, and the side-charging handle felt robust and well-placed. The finish was clean and even, and the M-LOK handguard felt solid.
I considered a SIG MPX and a CZ Scorpion, but their proprietary platforms didn’t appeal to me as much. The CMMG DISSENT offered the modularity of the AR platform, allowing me to use existing lowers and magazines with the help of CMMG‘s 9mm conversion magazines. That aspect, coupled with the innovative bufferless design, made the DISSENT the clear winner.
My initial reaction was excitement tempered with cautious optimism. The design was innovative and addressed my concerns about AR pistol regulations, but the proof would be in the performance. Would the bufferless system be reliable, and would the accuracy be acceptable from the short 6.5-inch barrel?
Real-World Testing: Putting CMMG DISSENT 9mm, 6.5in Upper Receiver to the Test
First Use Experience
My first range trip with the CMMG DISSENT 9mm, 6.5in Upper Receiver was at an outdoor range on a partly cloudy day. I paired it with a standard AR-15 lower receiver and a CMMG 9mm conversion magazine. I wanted to see how it performed under relatively controlled conditions.
The DISSENT cycled flawlessly through various 9mm loads, from 115-grain FMJ to 147-grain hollow points. Ejection was consistent, and the side-charging handle was easy to manipulate even with gloves on. The linear compensator effectively mitigated muzzle rise.
The initial learning curve was minimal. The controls were familiar, and the side-charging handle was intuitive to use. However, I did find that I needed to adjust my grip slightly to avoid inadvertently bumping the charging handle during rapid fire.
My first-time using the CMMG DISSENT was extremely positive. Reliability was excellent, and the accuracy was surprisingly good for such a short barrel. The recoil was manageable, and the overall shooting experience was enjoyable.
Extended Use & Reliability
After several months of regular use, the CMMG DISSENT 9mm, 6.5in Upper Receiver has proven to be remarkably reliable. I’ve put several thousand rounds through it in different shooting conditions, and it continues to function flawlessly. The Radial Delayed Blowback system seems to be very forgiving.
The finish has held up well to repeated handling and cleaning. I haven’t noticed any significant signs of wear and tear, even on high-stress areas like the bolt and charging handle. The M-LOK handguard remains rock solid.
Cleaning and maintenance are straightforward. The DISSENT disassembles easily, and the internal components are readily accessible. I typically clean it after each range session, and it’s been a breeze to maintain.
The CMMG DISSENT has exceeded my expectations. It offers the compactness and modularity I was looking for, and its reliability has been outstanding. It outperforms other 9mm AR platforms I’ve used in terms of ease of maintenance and overall shooting experience.
Breaking Down the Features of CMMG DISSENT 9mm, 6.5in Upper Receiver
Specifications
- Caliber: 9mm Luger. This makes it versatile and readily available.
- Barrel Length: 6.5 inches. This length offers a good balance of compactness and ballistic performance.
- Barrel Twist Rate: 1-10. Optimized for stabilizing a wide range of 9mm bullet weights.
- Threads per Inch: 1/2×28. This is a standard thread pitch for 9mm muzzle devices, allowing for easy customization.
- Muzzle Device: Zeroed Linear Compensator. This directs the blast forward, minimizing concussion and muzzle rise.
- Fabric/Material: Aluminum. Keeps the upper receiver lightweight yet durable.
- Gun Rail: M-LOK. Provides ample space for attaching accessories.
- Gun Make: CMMG. A reputable manufacturer known for quality firearms.
- Condition: New. Guarantees a pristine product.
- Magazine Included: No. Requires separate purchase of magazines or use of CMMG conversion magazines.
These specifications combine to deliver a compact, reliable, and versatile 9mm AR platform. The Radial Delayed Blowback system, combined with the short barrel and linear compensator, provides a controllable and enjoyable shooting experience.
Performance & Functionality
The CMMG DISSENT 9mm, 6.5in Upper Receiver excels in accuracy, reliability, and usability. It consistently delivers tight groupings at reasonable distances, cycles reliably with various ammunition types, and is easy to operate. The Radial Delayed Blowback system is inherently more reliable than direct blowback.
The strengths lie in its compact size, modularity, and smooth operation. The short barrel makes it ideal for maneuvering in tight spaces, while the AR platform allows for easy customization. One area for potential improvement is the weight, as it is a bit heavier than some other 9mm pistol uppers.
The CMMG DISSENT far exceeds my expectations for a bufferless 9mm AR upper receiver. It offers a unique blend of features and performance that sets it apart from the competition.
Design & Ergonomics
The CMMG DISSENT boasts excellent build quality. The aluminum receiver is well-machined, and the finish is durable. The weight is substantial but manageable, and the overall feel is solid and confidence-inspiring.
The ergonomics are generally good. The side-charging handle is easy to reach and manipulate. While the grip and controls are standard AR fare, the lack of a buffer tube drastically changes the overall feel and handling characteristics of the firearm.
Durability & Maintenance
With proper care, the CMMG DISSENT 9mm, 6.5in Upper Receiver should last for many years. The quality materials and robust construction contribute to its longevity. Regular cleaning and lubrication will ensure smooth and reliable operation.
Disassembly is straightforward, and spare parts are readily available from CMMG. The design is relatively simple, making repairs easy to perform.
Accessories and Customization Options
The CMMG DISSENT comes with a 1913 Picatinny rail end plate, allowing the attachment of braces or stocks (where legal). Its compatibility with standard AR-15 lowers opens up a wide array of customization options, from triggers to pistol grips.
The M-LOK handguard allows for the attachment of various accessories, such as lights, lasers, and foregrips. It is compatible with various AR-15 accessories and optics. The compatibility of the DISSENT with standard AR-15 lowers is a major advantage.
Pros and Cons of CMMG DISSENT 9mm, 6.5in Upper Receiver
Pros
- Compact Size and Bufferless Design: Allows for maximum maneuverability and eliminates the need for a buffer tube.
- AR-15 Platform Compatibility: Integrates seamlessly with existing AR-15 lowers (when using CMMG 9mm conversion mags), providing modularity and customization.
- Radial Delayed Blowback System: Enhances reliability, reduces recoil, and allows for smoother operation.
- Excellent Accuracy: Surprising accuracy for a 6.5-inch barrel.
- Side-Charging Handle: Facilitates quick and easy bolt manipulation.
Cons
- Weight: Heavier than some other 9mm pistol uppers.
- Requires CMMG 9mm Conversion Magazines or dedicated 9mm Lower: Adds to the overall cost if you don’t already have them.
Who Should Buy CMMG DISSENT 9mm, 6.5in Upper Receiver?
Perfect for: Individuals seeking a compact and modular 9mm AR-style firearm, firearm enthusiasts looking for innovative designs, and those concerned about AR pistol regulations. It is also a great choice for those who want the familiar controls and customization options of the AR platform in a compact 9mm package.
Who should skip this product? Those on a very tight budget might find it too expensive. Someone wanting a very lightweight option may want to explore other alternatives.
Must-have accessories or modifications? A quality brace or stock (depending on local laws), a red dot sight, and spare CMMG 9mm conversion magazines are essential. A weapon light is also recommended for home defense or tactical applications.
Conclusion on CMMG DISSENT 9mm, 6.5in Upper Receiver
The CMMG DISSENT 9mm, 6.5in Upper Receiver is a game-changer. The value is justified by its innovative design, exceptional reliability, and AR-15 platform compatibility.
I would wholeheartedly recommend the CMMG DISSENT to anyone looking for a compact, reliable, and modular 9mm AR-style firearm. It is a significant investment, but the performance and features justify the price.
If you’re seeking a cutting-edge 9mm platform that addresses the evolving landscape of firearm regulations, the CMMG DISSENT is the answer. Upgrade your AR game and experience the future of compact firepower.