FN 509 Action Enhancement Trigger Kit – Drop-In, Reduced Travel, Crisp Break
This is a direct drop-in trigger kit for the FN 509 platform, designed to reduce pull weight to approximately 5.5 lbs while shortening pre-travel, over-travel, and reset distance. The patent-pending geometry delivers a crisp break with no fitting required. Replaces the factory trigger assembly entirely, eliminating the need for stoning or aftermarket sear work. Maintains factory safety values via a center-mounted pivoting safety.
Compatibility
- FN 509 (all generations)
- FN 509 Compact
- FN 509 Tactical
- FN 509 Midsize
- FN 509 LS Edge
- FN 509 CC Edge
- FN High Power (509-pattern trigger group)
Note: Not compatible with FN FNS, FNX, or 502/503 series pistols.
Key Features
- Reduces trigger pull weight to ~5.5 lbs
- Reduces pre-travel, over-travel, and reset distance
- Crisp, defined break – no creep
- Direct drop-in – no gunsmith fitting
- Center-mounted pivoting safety maintains factory drop-safety specs
- Available in two trigger blade styles: Classic (flat sides, radiused corners) or Type 3 (chamfered corners with decorative face cuts)
- Black or red anodized finish (FDE discontinued)
- Includes all required springs and pins
Install Difficulty
2/5 – Requires punch set, small hammer, and a non-marring bench block. Detailed video guide available. No fitting, but trigger pin removal requires moderate hand strength. Budget 20–30 minutes for first install.
FAQ
Does this kit affect the striker safety or drop safety?
No. The center-mounted pivoting safety maintains factory safety values. This kit does not modify the firing pin block or sear engagement geometry.
Can I use this with factory holsters?
Yes. The trigger blade profile does not change the external trigger guard dimensions. Fits all standard FN 509 holsters.
Is the FDE color still available?
No. FDE triggers are discontinued due to anodizing supply issues. If you received a mismatched FDE trigger, contact customer service for a free replacement in red or black.
Shipping & Warranty
Ships same business day if ordered before 2 PM ET. Backed by manufacturer’s limited lifetime warranty against defects in materials or workmanship. No-hassle returns within 30 days of delivery.
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