Apex 9mm Threaded Barrel

Apex 9mm Threaded Barrel

Apex Optic Mount for Aimpoint® Acro P-1

Apex Optic Mount for Aimpoint® Acro P-1

Action Enhancement Kit for FN 509

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 Flat-Faced 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).


Does Not Fit These Guns

Not for use in FNS or FNS Compact 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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