CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger Review

Let’s Talk About CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger

The CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger promises enhanced performance and reliability for military, law enforcement, and serious recreational shooters alike. Designed by CMC Triggers, this trigger aims to deliver a crisp, consistent trigger pull in both semi-automatic and full-automatic modes. It’s a self-contained unit designed for easy installation, a feature that immediately caught my attention.

As a tactical gear specialist with over a decade of experience, I’m always on the lookout for upgrades that genuinely improve weapon performance. I was seeking a trigger upgrade that could enhance the feel of my AR platform without requiring extensive gunsmithing. The claims of a clean break, positive reset, and robust construction made the CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger particularly appealing.

The trigger arrived well-packaged, and my first impression was that it felt solid and well-made. The anodized aluminum housing inspires confidence, and the trigger itself had a smooth, almost polished feel. The included anti-walk pins were a nice touch, indicating attention to detail.

I considered other drop-in triggers from companies like Geissele and Timney, but the CMC Triggers unit offered a potentially simpler installation process and a price point that was appealing. Plus, I was intrigued by CMC Triggers’s claims of superior sear engagement surface finish and their full-auto compatibility. I was eager to see if it lived up to the hype, especially considering some user feedback suggesting potential issues with trigger shape and compatibility.

I was excited, but also cautiously optimistic. Drop-in triggers can be a mixed bag, and I’ve seen some that were a significant improvement over the mil-spec trigger, and others that were just…different. I hoped this would be one of the former.

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Real-World Testing: Putting CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger to the Test

First Use Experience

I first tested the CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger at my local shooting range. I installed it in my AR-15 lower receiver, a process that took about 10 minutes with the provided instructions and anti-walk pins. I wanted to see how it performed in a controlled environment before taking it out into more demanding situations.

The range conditions were dry and sunny, ideal for testing trigger feel and accuracy. The difference between the stock trigger and the CMC Triggers unit was immediately noticeable. The CMC Triggers trigger provided a much cleaner break and a shorter reset than the standard mil-spec trigger.

Initially, the installation went smoothly, but I did notice the trigger felt lighter than expected. This wasn’t necessarily a bad thing, but it did require some adjustment in my trigger control.

Extended Use & Reliability

After several range trips and hundreds of rounds fired, the CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger continues to perform well. There are no signs of excessive wear or tear. The anodized coating on the housing remains intact, and the trigger pull remains consistent.

Cleaning and maintenance are straightforward. A quick wipe-down with a CLP-soaked cloth is all that’s needed to keep it running smoothly. I’ve used it in dusty conditions and even experienced a light rain shower during one range session, and it didn’t affect performance.

This trigger definitely outperforms the stock mil-spec trigger it replaced. It offers a more precise and predictable shooting experience. The improved trigger control has noticeably tightened my groupings at 100 yards.

Breaking Down the Features of CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger

Specifications

The CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger is designed for both AR-15 and AR-10 platforms. It features a single-stage trigger mechanism with an advertised pull weight of 4.5 pounds. The housing is made from anodized aluminum, while the internal components are crafted from 8620 alloy steel and S7 tool steel, machined to tight tolerances of +/- .001″.

The trigger shape is curved (although some users have reported receiving a curved trigger when a flat trigger was expected). It’s compatible with full-auto systems, making it suitable for select-fire rifles. It comes with an anti-walk pin set to prevent pin migration during use.

These specifications are critical because they dictate the trigger’s feel, durability, and compatibility. The 4.5-pound pull weight aims for a balance between precision and responsiveness, while the high-quality materials and tight tolerances ensure reliable performance, even under demanding conditions. The full-auto compatibility makes it a versatile upgrade for those who own select-fire ARs.

Performance & Functionality

The CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger performs exceptionally well in its intended role. In semi-automatic mode, the trigger provides a crisp, clean break with minimal creep. The positive reset allows for rapid follow-up shots, making it suitable for both precision shooting and tactical applications.

The primary strength of this trigger is its consistent and predictable trigger pull. It inspires confidence and allows for greater control over each shot. However, some users might find the 4.5-pound pull weight too light for certain applications, such as hunting in cold weather or operating under stress.

Overall, the trigger meets and even exceeds expectations. The improved trigger control has a positive impact on accuracy and shooting speed.

Design & Ergonomics

The CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger boasts a robust and well-thought-out design. The self-contained, one-piece assembly simplifies installation and ensures proper alignment of internal components. The anodized aluminum housing adds rigidity and protects the trigger mechanism from the elements.

The curved trigger shape is comfortable and provides a natural feel. However, as some users have noted, the availability of flat triggers may be limited. The trigger’s weight is negligible, adding no noticeable bulk to the rifle. The simple drop-in design means there’s no need for advanced gunsmithing skills to install it.

Durability & Maintenance

Given its construction from high-quality materials, the CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger is built to last. The 8620 alloy steel and S7 tool steel components are resistant to wear and corrosion. The anodized aluminum housing provides an extra layer of protection against the elements.

With proper care, this trigger should provide years of reliable service. Maintenance is minimal, requiring only occasional cleaning and lubrication. There are no user-adjustable parts, which simplifies maintenance but limits customization options.

Accessories and Customization Options

The CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger comes with an anti-walk pin set to ensure secure installation. Beyond that, it doesn’t include any additional accessories. However, its compatibility with MIL-SPEC AR-15 and AR-10 platforms means it can be used with a wide range of aftermarket accessories, such as different pistol grips and selector levers.

The lack of user-adjustable features limits customization options, but the drop-in design makes it easy to swap out the entire trigger unit if desired. The trigger is compatible with most standard AR-15/AR-10 lower receivers, so there are no compatibility issues with common accessories like magazines and buffer tubes.

Pros and Cons of CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger

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Who Should Buy CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger?

The CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger is perfect for:

• Tactical shooters seeking improved trigger control and faster follow-up shots.
• Law enforcement and military personnel who require reliable performance in demanding situations.
• Competitive shooters looking for an edge in speed and accuracy.

This product isn’t the best choice for:

• Hunters who prefer a heavier trigger pull for added safety in cold weather or high-stress situations.
• Budget-conscious shooters who are satisfied with a standard mil-spec trigger.

A must-have modification for this trigger would be an ambidextrous safety selector. This would make the rifle more versatile for both left- and right-handed shooters.

Conclusion on CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger

In summary, the CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger offers a significant upgrade over a standard mil-spec trigger. It delivers a crisp, clean trigger pull, a positive reset, and reliable performance in both semi-automatic and full-automatic modes. Its durable construction and easy drop-in installation make it a worthwhile investment for serious shooters.

The price of $270 is justified by the improved performance and enhanced reliability. While the non-adjustable pull weight and potential for inconsistent trigger shape delivery may be drawbacks for some, the overall benefits outweigh the limitations.

I would personally recommend the CMC Triggers AR-15/10 Full-Auto Select Fire Drop-in Trigger to anyone looking for a high-quality, reliable trigger upgrade for their AR platform. If you’re seeking improved trigger control, faster follow-up shots, and enhanced overall shooting performance, this trigger is definitely worth considering. Upgrade your AR and experience the difference today!