Action Enhancement Kit for FN 509

Action Enhancement Kit for FN 509

Action Enhancement Kit for FN 509 - with Curved Trigger

Availability: Out of stock


Apex originated the drop-in trigger kit for the FN 509. The patent-pending design of the Action Enhancement Trigger Kit for the FN 509 (with Curved Trigger) makes a huge difference in the trigger pull characteristics and immediately became a must-have for 509 owners. When installed, this kit will:


– Reduce trigger pull weight to approx. 5.5 lbs.

– Reduce trigger pre-travel, over-travel and reset distance

– Deliver a crisp trigger break

– Maintain factory safety values with a center mounted pivoting safety

– Direct drop-in replacement, no fitting required

For Use In These Guns

For use in the following FN model pistols:

FN 509 (including Tactical, Midsize and Compact models).

FN FNS Compact all available calibers

Does Not Fit These Guns

Not for use in FNS models.

Not for use in the FN 503

What's Included

1 ea. Action Enhancement Trigger w/ Apex Trigger Bar for FN 509

1 ea. Apex Performance Sear

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