Action Enhancement Kit for FN 509

This Action Enhancement Kit is the drop-in trigger upgrade your FN 509 has been waiting for. Designed and sold by the same crew that originated the drop-in trigger for this platform, this kit delivers a serious improvement in trigger pull without any guesswork or gunsmithing. At $160, it’s a straightforward investment in better performance, shot after shot.

What you get: A direct drop-in replacement that requires no fitting. Just swap out your factory parts and you’re done. The patent-pending design immediately changes how the trigger feels and operates. You get a crisp, clean break with less mush and creep.

• Trigger pull weight: Reduced to approximately 5.5 lbs. – a noticeable improvement over stock, making follow-up shots faster and more consistent.
• Reduced pre-travel, over-travel, and reset distance: Less wasted movement means your finger gets back to the wall quicker. Good for faster strings and better accuracy under pressure.
• Crisp trigger break: No stacking or gritty feel. Just a clean wall and a predictable snap.
• Factory safety values maintained: The center-mounted pivoting safety keeps things safe and reliable, just like the original.

Choose your style: We offer two trigger face options, both using the same internals and performance:

• Apex Classic Trigger: Radiused front corners, flat visible sides with no face cuts. Simple, clean, functional.
• Apex Type 3 Trigger: Chamfered front corners with decorative face cuts on the visible sides. Same performance, slightly different look.

Important note on FDE triggers: Due to supply chain issues, we have discontinued FDE triggers until further notice. We are working to source a new anodizing shop that can match our color requirements. If you received an FDE trigger and are unhappy with the color, contact our Customer Service staff to discuss swapping it for red or black. We apologize for the inconvenience.

Fitment: Designed specifically for the FN 509 platform. Direct drop-in, no fitting required. Works with standard and compact models.

Bottom line: If you own an FN 509 and want a better trigger without the hassle of fitting or the risk of messing with factory safety, this kit is the no-nonsense solution. It’s a proven upgrade that plenty of 509 owners have already made a must-have. At $160, it’s a solid value for a noticeable improvement in trigger feel and