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Apex created a drop-in trigger kit for the FNS which has since become a go-to addition for FNS owners, thanks to its patent-pending design. The Action Enhancement Trigger Kit improves trigger pull characteristics significantly and offers the following benefits:

- Trigger pull weight reduced to approximately 5.5 lbs.

- Reduction of trigger pre-travel, over-travel, and reset distance

- Delivery of a crisp trigger break

- Maintenance of factory safety values using a center-mounted pivoting safety

- Direct drop-in replacement – fitting is not necessary


This kit can be used in the following FN models: FNS and FNS Longslide, including those made before 2014.

Please note: This kit is not suitable for use in FN 509 or FNS Compact models, and is not compatible with the FN 503.

The kit includes:

- 1 Action Enhancement Trigger with Apex Trigger Bar for FNS

- 1 Apex Performance Sear