Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19 Review

Behind the Box: Testing the Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19

As an equipment specialist with over a decade of hands-on experience across diverse environments, I’ve learned that the devil is often in the details, especially when it comes to firearm accessories. The Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19 arrived with a promise of enhanced consistency and reduced muzzle climb, critical factors for any shooter looking to wring more performance from their pistol. My journey with this compensator began with a need to tame the muzzle flip on a custom Glock build, a common endeavor that often reveals whether an accessory truly elevates performance or introduces more problems than it solves. First impressions were solid; the machined aluminum felt robust, and the black anodized finish offered a utilitarian, understated aesthetic that complemented the pistol. While I considered other, more budget-friendly options, I gravitated towards Faxon’s reputation for quality engineering, hoping for a refined solution. My initial reaction was one of professional curiosity, eager to see if this compensator lived up to its claims.

Real-World Testing: Putting Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19 to the Test

First Use Experience

My primary testing ground for this compensator was a familiar indoor shooting range, a controlled environment perfect for initial evaluation. I mounted the EXOS-513 onto a Glock 19 Gen 3, a platform it’s explicitly designed for, using a Faxon match barrel. The installation was straightforward, aided by the included set screws and Allen wrench, though the initial requirement for thread locker gave me pause, as I’ll discuss later. Firing was conducted with a variety of 9mm ammunition, ranging from standard 115-grain FMJ to heavier 147-grain loads, to gauge its performance across different recoil profiles. In terms of ease of use, the physical installation was intuitive, but understanding its impact on the firearm’s cycling became an immediate area of focus. The first session revealed a noticeable reduction in muzzle rise, a definite win, but also a slight increase in the need for meticulous lubrication to ensure smooth cycling, an unexpected quirk.

Extended Use & Reliability

After several hundred rounds over multiple range sessions, the Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19 has become a fixture on my test pistol. Its initial promise of reduced recoil and improved shot-to-shot consistency has largely held true, particularly with warmer loads. Durability seems excellent; the anodized finish has resisted superficial scratches from handling, and the aluminum construction shows no signs of stress or warping. Maintenance is minimal, primarily requiring a quick wipe-down and occasional attention to ensure the set screws remain snug, though this is where the primary challenge lies. Compared to simpler muzzle brakes or un-comped barrels, the flat shooting characteristic is undeniable. However, the persistent need for precise lubrication and careful monitoring of the mounting hardware means this isn’t a “set it and forget it” accessory.

Breaking Down the Features of Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19

Specifications

The Faxon Firearms EXOS-513 Pistol Compensator is constructed from 6061 Aluminum, a common and effective material choice for its balance of strength and light weight. It features a single-chamber design with uniquely angled front ports, a key element intended to redirect gas upwards and reduce both muzzle climb and recoil. The compensator measures a compact 1.1 inches in length and 1 inch in width, with a height of 1.2 inches, making it a relatively streamlined addition to the firearm. Its weight is a minimal 0.6 lbs, ensuring it won’t add significant heft to the pistol. This model is specifically designed for Glock Gen 3 and Faxon Firearms FX-19 pistols, with fitment testing performed on the Glock 19 Gen 3, Glock 17 Gen 3, and Glock 34 Gen 3. The barrel protrusion is optimized to fit flush with the slide for Faxon barrels, or should be .600” or less for other manufacturers’ barrels to achieve a similar flush fit. Each compensator comes complete with thread locker, two 6-32 set screws, and a 1/16 Allen wrench.

Performance & Functionality

The primary function of the EXOS-513 is to mitigate muzzle rise and recoil, and in this regard, it largely succeeds. The angled ports effectively redirect expanding gases upwards, leading to a noticeably flatter shooting experience, especially during rapid fire sequences. This improved stability translates to enhanced consistency, allowing for quicker follow-up shots. However, this increased gas redirection can also impact the pistol’s cycling. Lighter ammunition, particularly 115-grain loads, sometimes struggled to reliably cycle the action without meticulous tuning of lubrication and potentially spring weights. Heavier ammunition, like 124-grain and 147-grain rounds, performed significantly better, ensuring full slide travel and positive ejection. It’s a classic trade-off: greater control comes at the potential cost of action reliability with certain ammunition types, a common characteristic of many pistol compensators.

Design & Ergonomics

Faxon’s design for the EXOS-513 is pragmatic and functional. The 6061 Aluminum construction is lightweight yet durable, and the black anodized finish provides a non-reflective, professional look. The single-chamber design is less bulky than some multi-port alternatives, which contributes to its streamlined appearance. Its form factor is intended to integrate seamlessly, ideally matching the slide profile. The inclusion of set screws for attachment is a standard and effective method, though the need for thread locker is a critical detail that significantly affects the user experience. While the compensator itself is well-machined, the overall ergonomic impact is tied to how it integrates with the firearm and the shooter’s grip. It doesn’t interfere with a standard grip, but its presence does extend the firearm’s overall length, which is a factor for concealed carry considerations.

Durability & Maintenance

Durability appears to be a strong suit for the Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19. The 6061 Aluminum with its anodized finish is resistant to common wear and tear encountered on the range or during routine handling. The primary area requiring attention is the mounting system. The two 6-32 set screws secure the compensator to the barrel. While effective, they require periodic checking, especially given the potential for vibrations during firing to loosen them. The requirement for thread locker, either red Loctite or an equivalent, is crucial for long-term stability. Without it, the compensator can and will work loose, negatively impacting accuracy and potentially causing issues with cycling. This means maintenance involves not just cleaning but also occasional checks and reapplication of thread locker if it’s removed for cleaning or maintenance.

Accessories and Customization Options

The EXOS-513 comes with a basic but essential accessory kit: thread locker, two 6-32 set screws, and a 1/16 Allen wrench. This is a thoughtful inclusion that allows users to install the compensator right out of the box, assuming they have a compatible barrel. Beyond these included items, there aren’t significant customization options for the compensator itself, as it’s designed for a specific function and aesthetic. Its primary “customization” lies in its application to various Glock Gen 3 and FX-19 models, provided the barrel protrusion is within specification. Compatibility with aftermarket Glock slides and barrels from other manufacturers is possible, but requires careful measurement to ensure the optimal .600” or less barrel protrusion for a flush fit.

Pros and Cons of Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19

Who Should Buy Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19?

The Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19 is an excellent option for shooters who prioritize reduced muzzle rise and enhanced control during rapid fire, particularly those who participate in competitive shooting disciplines or enjoy a flatter-shooting platform at the range. It’s well-suited for owners of Glock Gen 3 or Faxon FX-19 pistols who are comfortable using heavier ammunition (124-grain and above) or are willing to experiment with lighter loads and fine-tune their firearm’s performance through lubrication and potentially spring swaps. Individuals who appreciate functional, minimalist design and have a stable, dedicated build where permanent accessory attachment is not a concern will also find this compensator appealing.

However, this compensator is likely not the best choice for users who:

• Rely exclusively on lightweight defensive ammunition (e.g., 115-grain standard pressure) and do not wish to adjust their ammo selection or firearm tuning.
• Prefer to avoid permanent modifications or thread locker on their firearms, or who frequently disassemble their pistol for cleaning and maintenance.
• Are seeking a “plug-and-play” solution that works flawlessly with all ammunition types without any adjustment.
• Operate in environments where extreme reliability with any 9mm load is paramount and tuning is not feasible.

For optimal performance, pairing this compensator with a quality match-grade barrel that ensures proper protrusion and potentially a recoil spring tuned for compensated firearms would be beneficial.

Conclusion on Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19

The Faxon Firearms EXOS-513 Pistol Compensator for Glock and FX-19 delivers on its core promise: it effectively tames muzzle flip and enhances shot-to-shot consistency, offering a tangible improvement in control for Glock Gen 3 and FX-19 owners. Its 6061 Aluminum construction is durable, and the single-chamber design is aesthetically pleasing and functionally sound for its intended purpose. The price point is competitive, especially considering the quality of machining and the brand’s reputation.

However, the requirement for red thread locker is a significant consideration that cannot be understated. This isn’t an accessory for those who frequently swap components or prefer a non-permanent installation. Furthermore, the potential for degraded cycling reliability with lighter ammunition means it’s best suited for shooters who can adapt their ammunition or firearm setup.

Ultimately, if you are looking for a well-machined, effective compensator for your Glock Gen 3 or FX-19, primarily shoot heavier 9mm loads, and are comfortable with a semi-permanent installation using thread locker, then the EXOS-513 is a strong contender. It provides a noticeable performance upgrade for its class, but be prepared for the necessary adjustments to fully integrate it into your shooting system.