If you own an FN 509 and wish the trigger pull was a little lighter and a lot crisper, this drop-in kit is exactly what you’ve been looking for. This component replaces the factory trigger, sear, and associated springs with a patent-pending design that instantly improves the feel of your pistol. The biggest complaint we hear from 509 owners is the mushy take-up and long reset from the factory—this kit addresses both issues directly. It’s a direct swap with zero filing or fitting, so you can get back to the range faster.
Compatibility
- FN 509 (full-size)
- FN 509 Compact
- FN 509 Tactical
- FN 509 Midsize
- FN 509 LS Edge (check fit with your specific slide)
Key Features
- Reduces trigger pull weight to approximately 5.5 lbs
- Cuts pre-travel, over-travel, and reset distance noticeably
- Delivers a crisp, clean break with no creep
- Center-mounted pivoting safety maintains factory safety values
- Drop-in design—no fitting, filing, or gunsmithing required
- Includes curved trigger shoe for a familiar, comfortable finger position
Install Difficulty: 2 out of 5
You’ll need a punch set, a small hammer or mallet, and a bench block or piece of wood to support the frame. Watch the manufacturer’s install video on YouTube before you start—it walks you through the pin removal and sear swap step by step. Expect about 20-30 minutes if you take it slow. If you’ve ever detail-stripped a striker-fired pistol, this is straightforward.
Frequently Asked Questions
Will this fit my FN 509 Compact?
Yes, it fits all standard 509 models including the Compact. The LS Edge may require a quick check of the trigger bar geometry—most work fine, but we recommend test-fitting before final assembly.
Do I need to replace the striker or any other parts?
No. This kit is a complete drop-in replacement for the trigger, sear, and springs only. The factory striker, slide components, and frame parts remain unchanged. You do not need to buy anything else to get the improved pull.
What about the color of the trigger or sear?
The flat dark earth triggers sometimes come out closer to a burnt bronze color due to the anodizing process. If you receive an FDE trigger and are unhappy with the shade, contact our customer service team—we can swap it for red or black at no charge. Also, the sear you receive may look slightly different from the photo. If it has the Apex laser engraving, it has passed all quality checks and is correct.
Shipping & Warranty: We ship same business day on orders placed before 2 PM Eastern. This kit is backed by the manufacturer’s warranty against defects in materials and workmanship. If you have any fitment questions, give us a call—we’re a family shop and happy to help before you buy.
Reviews
There are no reviews yet.