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FN 509 ACTION ENHANCEMENT TRIGGER KIT Reviews & Ratings

Apex Tactical's FN 509 Action Enhancement Kit will give your pistol a lighter, smoother trigger pull with less pre-travel, shorter overall pull length, AND a shorter (therefore faster) reset. Like Apex's Action Enhancement kits for the S&W M&P and SIG pistols, it's an easy-to-install replacement for your 509's factory trigger, trigger bar, and sear - basically a drop-in DIY trigger job! FN 509 owners who are a little handy with tools and comfortable following instructions can do the job themselves.

Drop-in replacement for factory trigger, trigger bar & sear
Will not alter function of factory safeties
Machined aluminum "flat-faced" trigger shoe with matte black hard-anodized finish
Polished stainless steel sear & trigger bar
Fits FN 509 chambered in 9mm Luger OR .40 S&W
Available in Black or Red.

When installed, the Apex FN 509 Action Enhancement Kit will reduce the trigger pull weight to approximately 5.5 lbs.; actual weight will vary slightly from one FN 509 to another. Rather than the OK-but-not-great feel of the plastic factory trigger, Apex's trigger is made of machined aluminum with their trademark "Flat Face." Many shooters prefer the flat face for its more comfortable feel and precise control akin to a 1911 target trigger. At the same time the "AEK" will not alter the function or reliability of your 509's factory trigger safety, firing pin safety, drop safety, or out-of-battery safety.

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2 Stars

Reviews Summary

The Apex FN 509 Action Enhancement Trigger Kit receives mixed reviews. Many users appreciate its performance and improvement over the stock trigger, noting a lighter pull and better accuracy. However, installation challenges, particularly with the locking block pin, have led to frustrations and concerns about quality control. Recommendations suggest using the Apex installation block for ease.

What Reviewers Are Saying

Product Performance

70%

The trigger kit significantly enhances the feel and performance of the FN 509, with users reporting reduced trigger pull weight and improved accuracy. Many highlight the contrast between the stock trigger and the upgraded Apex trigger, describing it as a much-needed improvement. Approximately 70% of reviewers mention this positive transformation.

Installation Challenges

60%

A recurring theme is the difficulty of installing the trigger kit, specifically the challenge of removing the locking block pin. While some users report easy installations with proper tools, many express frustration and suggest that the installation process is more complicated than anticipated. About 60% of reviewers note issues related to installation.

Customer Service

40%

Apex's customer service receives mixed feedback, with some users appreciating their support while troubleshooting installation issues. However, several customers voiced concerns about the lack of effective solutions for installation difficulties. Around 40% of reviewers commented on their interaction with customer service.

Quality Control

30%

Some users experienced issues with the quality of the trigger, including cosmetic flaws and defective units. This raises concerns about quality control in manufacturing, with approximately 30% of reviewers reporting such issues.

Installation Tools

50%

Many suggest purchasing the Apex installation block to ease the process. This tool helps avoid damaging the firearm while also simplifying the installation, leading to a better overall experience for about 50% of reviewers who mentioned it.

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Not bad

Better than stock trigger. I would recommend using the Mcarbo springs in conjunction with these triggers to get it down to around 4lbs. Also the anodized FDE is more of burnt bronze and no where close to FDE . Overall good trigger construction

by michael k. on July 30, 2023

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Part 2: Impossible to Install

I called Apex today. They are aware of the problem. They advised me that approximately 1/3 of the FN 509s they installed triggers in they had to use a press to get the locking block pin out and even with the press they were hard to remove. They stated that this is really a problem with the FN 509 Tactical. They are working on making arrangements so customers can ship their FN 509s to them and they will do the install for free. They stated once they work this out they will make an announcement. Customer Service so far is excellent.