CMMG, Inc A2 Compensator Review

Let’s Dive into CMMG, Inc A2 Compensator

The CMMG, Inc A2 Compensator is a ubiquitous muzzle device, a staple on AR-15 platforms for decades. It’s a no-frills, budget-friendly option designed to reduce muzzle rise and improve control during rapid fire. I picked one up recently, not expecting groundbreaking performance, but seeking a reliable, basic compensator for a dedicated 9mm AR pistol build.

What sparked my interest in the CMMG, Inc A2 Compensator? I was piecing together a budget-friendly 9mm AR pistol. I needed a compensator that was compatible with the 1/2-36 threads common on 9mm barrels, and I didn’t want to break the bank. Functionality and affordability were my top priorities.

My first impression upon unboxing was exactly what I anticipated: a simple, black oxide finished steel device. The CMMG, Inc A2 Compensator felt solid and well-made, belying its incredibly low price point. There were no obvious machining flaws or imperfections.

I considered a few other options, including some linear compensators marketed for directing sound forward, and flash hiders. However, I opted for the CMMG, Inc A2 Compensator because of its proven design and low cost. I wasn’t chasing minimal flash or maximum noise reduction; I wanted a basic compensator that would help tame muzzle climb in 9mm.

Initially, I was neither excited nor disappointed – I was realistic. I knew the CMMG, Inc A2 Compensator wouldn’t perform like a high-end competition brake. But, I was cautiously optimistic that it would offer a noticeable improvement over a bare muzzle.

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Real-World Testing: Putting CMMG, Inc A2 Compensator to the Test

First Use Experience

My initial testing took place at an indoor shooting range. I mounted the CMMG, Inc A2 Compensator on my 8.3″ Ballistic Advantage 9mm barrel using a crush washer (not included, which is typical). The environment was controlled, allowing me to focus solely on the compensator’s performance.

The CMMG, Inc A2 Compensator performed as expected. It noticeably reduced muzzle rise during rapid fire with 115gr FMJ ammunition. The felt recoil remained manageable, and the muzzle stayed relatively flat, allowing for quicker follow-up shots.

The installation was simple, requiring only a wrench and a crush washer. No specialized tools were necessary. The compensator tightened securely against the crush washer, providing a solid and stable mounting point.

Extended Use & Reliability

After several range sessions and hundreds of rounds fired, the CMMG, Inc A2 Compensator continues to perform reliably. There are no signs of loosening or degradation of the finish. It has proven to be a durable and dependable addition to my 9mm AR pistol.

The black oxide finish shows some minor wear marks from cleaning and handling. But overall, the compensator has held up well under regular use. It’s a testament to the quality of materials and construction, despite its low price.

Cleaning is straightforward; I simply wipe it down with a solvent-soaked cloth after each range session. No special cleaning procedures are required. The simple design means there are no small parts or intricate surfaces to worry about.

Compared to my experience with a more expensive muzzle brake on another AR-15, the CMMG, Inc A2 Compensator is less effective at recoil reduction. However, it still offers a tangible improvement over a bare muzzle, especially in managing muzzle rise. For its price point, it exceeds expectations.

Breaking Down the Features of CMMG, Inc A2 Compensator

Specifications

• Manufacturer: CMMG.
• Color: Black.
• Gun Model: AR-15 (primarily used on 9mm AR builds due to thread pitch compatibility).
• Condition: New.
• Thread Pitch: Typically 1/2-36 for 9mm AR barrels, although some may be 1/2-28. Verify thread pitch compatibility with your barrel before purchasing.
• Material: Steel with a black oxide finish.
• Design: Standard A2 birdcage compensator with six ports.
• Purpose: To reduce muzzle rise and felt recoil.

These specifications are important because they directly impact the CMMG, Inc A2 Compensator’s compatibility, performance, and durability. The black oxide finish provides a degree of corrosion resistance. The A2 design is proven to effectively redirect gasses, reducing muzzle climb.

Performance & Functionality

The CMMG, Inc A2 Compensator functions as intended, providing noticeable muzzle rise reduction, especially in 9mm AR builds. The design effectively redirects propellant gasses upwards. This helps keep the muzzle down during rapid fire.

The strengths are its simplicity, affordability, and noticeable improvement over a bare muzzle. A minor weakness is that, compared to more aggressive muzzle brakes, the recoil reduction is moderate. It will not completely eliminate muzzle rise, but significantly tames it.

The CMMG, Inc A2 Compensator meets my expectations for a basic compensator at this price point. It’s not a competition-grade device, but it serves its purpose well for general range use and plinking.

Design & Ergonomics

The build quality is solid. The steel construction feels robust, and the black oxide finish provides adequate protection against corrosion. The weight is negligible, adding very little to the overall weight of the firearm.

The CMMG, Inc A2 Compensator is inherently user-friendly due to its simple design. Installation requires minimal effort. No specialized knowledge is needed to install and use it effectively.

Durability & Maintenance

With proper care, the CMMG, Inc A2 Compensator should last for thousands of rounds. The steel construction is durable and resistant to heat and pressure. The black oxide finish will eventually show wear, but it’s primarily cosmetic.

Maintenance is minimal. Regular cleaning with a solvent and a brush is all that’s required to keep it in good working order. The simple design means there are no small parts that can break or require replacement.

Accessories and Customization Options

The CMMG, Inc A2 Compensator itself doesn’t require any accessories. However, a crush washer is necessary for proper installation and timing. Some shooters may opt for a peel washer instead.

There are no specific customization options for the CMMG, Inc A2 Compensator itself. Its standard A2 birdcage design makes it compatible with some aftermarket accessories designed for A2-style muzzle devices, such as blast shields that direct sound forward.

Pros and Cons of CMMG, Inc A2 Compensator

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Who Should Buy CMMG, Inc A2 Compensator?

The CMMG, Inc A2 Compensator is perfect for budget-conscious AR-15 builders, casual range shooters, and those looking for a simple and effective muzzle device to reduce muzzle rise in 9mm AR pistols or rifles. It is a great option for those prioritizing affordability and ease of use over maximum recoil reduction.

Those who should skip this product are competitive shooters seeking maximum recoil reduction, or individuals prioritizing flash suppression over muzzle rise control. A more expensive, specialized muzzle brake or flash hider would be a better choice for these individuals.

A must-have accessory is a crush washer for proper installation and timing. A thread protector might also be useful for protecting the barrel threads when the compensator is not installed.

Conclusion on CMMG, Inc A2 Compensator

The CMMG, Inc A2 Compensator is a solid, no-frills muzzle device that delivers on its promise of reducing muzzle rise at an incredibly affordable price. It’s not the flashiest or most effective compensator on the market. But it offers a tangible improvement over a bare muzzle, especially in 9mm AR builds.

The value proposition is excellent. The low price point makes it an accessible upgrade for any AR-15 owner. It offers a good balance of performance, durability, and affordability.

I would personally recommend the CMMG, Inc A2 Compensator to anyone looking for a basic, reliable compensator without breaking the bank. It’s a great entry-level muzzle device that will get the job done. Upgrade your AR-15 today and experience the difference!