Action Enhancement Kit for FN 509

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

Trigger Styles:

Apex Classic Trigger:

• Radius on the front corners
• Flat on the visible sides of the trigger with no face cuts

Apex Type 3 Trigger:

• Chamfers at the front corners
• Additional decorative face cuts on the visible sides of the trigger

Our Type 3 Trigger features a visually distinct design that sets it apart, while maintaining the same excellent performance as our Classic Triggers.

Notice Regarding FDE Color:

Due to supply chain issues, we have discontinued FDE triggers until further notice. We are working to source a new anodizing shop that can accurately match our color requirements.

If you received an FDE trigger and are unhappy with the color, we urge you to contact our Customer Service staff to discuss replacing your trigger with one in red or black.

We apologize for any inconvenience.