Action Enhancement Kit for FN 509 – with Curved Trigger

Description

For FN 509 owners who want a trigger that feels like it should have come from the factory, this Action Enhancement Kit with a curved trigger delivers exactly that. Built by Apex—the company that pioneered the drop-in trigger system for the 509—this kit is designed for practical shooters, hunters, and anyone carrying concealed who demands consistent, predictable performance from their handgun.

Straight out of the box, this is a direct drop-in replacement. No filing, no fitting, no trips to a gunsmith. You install it yourself in minutes, and you get a trigger that changes how your 509 handles. The kit reduces pull weight to approximately 5.5 lbs, cuts down pre-travel and over-travel, shortens the reset distance, and delivers a clean, crisp break. That means faster, more accurate follow-up shots and less effort to stay on target during a long range session or a defensive course.

Safety isn’t compromised. The patent-pending design uses a center-mounted pivoting safety that maintains all factory safety values. You get a better trigger without giving up reliability or peace of mind.

What’s included in the kit:

• Curved trigger shoe (your choice of color)
• Drop-in sear with Apex laser engraving
• All necessary springs and pins

Key performance specs:

• Trigger pull weight: ~5.5 lbs
• Reduced pre-travel, over-travel, and reset distance
• Crisp, clean break with no grit or creep
• Factory safety values maintained
• Direct drop-in installation — no fitting required

Important notes on color and sear appearance:

• Flat Dark Earth (FDE) triggers may appear more like a burnt bronze color due to the anodizing process and materials. This is a repeatable, consistent color from Apex—unlike other vendors’ past attempts. If you receive an FDE trigger and are unhappy with the color, contact customer service to discuss swapping for Red or Black at no hassle.
• The sear you receive may look slightly different from the photo. If it has the Apex logo laser engraved on it, it has received all necessary processes and is correct. No need to second-guess it.

Whether you’re running drills at the range, carrying everyday, or heading into the field, this kit gives you a trigger that works with you—not against you. At $160, it’s one of the most practical upgrades you can make to your FN 509. Available now at Dallas Shooters.