119-125
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What It Does
The Apex Action Enhancement Kit for the FN 509 model pistols is a direct drop-in replacement of the factory polymer trigger, trigger bar and sear. The patent pending Apex design reduces trigger pull weight to give you an approx. pull weight in the 5.5 lbs range. Trigger travel is also reduced, including pre-travel, over-travel, overall trigger travel and trigger reset distance. It provides a smooth uptake while delivering a crisp trigger break.

Expected Results
– Direct drop-in replacement of factory polymer trigger, trigger bar and sear
– Reduces trigger pull weight to approx. the 5.5 lbs. range

– Reduces trigger pre-travel, over-travel and reset distance
– Provides crisp trigger break
– Center mounted pivoting safety maintains factory safety values


Applicable To What Gun(s)
For use in the FN 509 model pistols.
NOT for use in FNS or FNS Compact models.

In The Package
1 ea. Flat-Faced Action Enhancement Trigger w/ Apex Trigger Bar (Patent Pending)
1 ea. Apex Performance Sear

Installation Resources
FN Install Assistance from Apex