Drop-in trigger kit for the FNS series. Reduces pull weight to approximately 5.5 lbs, shortens pre-travel, over-travel, and reset distance, and delivers a crisp break — all while maintaining factory safety values via a center-mounted pivoting safety. No fitting required.
Compatibility
- FN FNS-9
- FN FNS-9C
- FN FNS-40
- FN FNS-40C
- FN FNS-9 Long Slide
Does not fit FNX, FNP, or 509 series.
Key Features
- Drop-in replacement — no gunsmithing or fitting
- Reduces trigger pull weight to ~5.5 lbs (factory is ~7.5 lbs)
- Reduces pre-travel, over-travel, and reset distance
- Crisp, clean break with positive reset
- Center-mounted pivoting safety maintains factory drop-safety values
- Patent-pending design
- Includes all components needed for installation
Install Difficulty
2 out of 5 — requires basic hand tools (punch set, small hammer, non-marring mallet). Detailed instructions included. Expect 20-40 minutes if you’ve detail-stripped an FNS before. First-timers allow 60 minutes.
Frequently Asked Questions
Will this work in my FNX or FNP?
No. This kit is specific to the FNS series only. FNX/FNP use a different fire control geometry.
Do I need to replace any other parts?
No. This is a complete drop-in kit. Use the factory trigger return spring, striker, and striker spring. All replacement components are included in the package.
Will this affect reliability with defensive ammunition?
No. The kit maintains factory safety values and does not lighten the striker spring. The reduced pull weight comes from sear geometry changes, not spring swaps. It is suitable for carry use after function-checking.
All orders ship within one business day. This kit carries a limited lifetime warranty against manufacturer defects. Returns accepted within 30 days of delivery if uninstalled.
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