Action Enhancement Kit for FNS Compact

This Action Enhancement Kit is a direct drop-in trigger system engineered specifically for the FN FNS Compact. It addresses the factory trigger’s long, gritty take-up and heavy pull weight—common complaints among shooters transitioning from striker-fired platforms or seeking faster follow-up shots. By replacing the OEM trigger, sear, and associated springs, this kit reduces pull weight to approximately 5.5 lbs, shortens pre-travel and over-travel, and delivers a crisp break with a significantly reduced reset distance. The patent-pending design maintains all factory safety values via a center-mounted pivoting safety, ensuring the pistol remains drop-safe and mechanically sound for carry or competition use.

Compatibility

• FN FNS Compact (9mm and .40 S&W)
• FN FNS Long Slide models (9mm and .40 S&W)
• Not compatible with FN 509, FNX, or FNP series

Key Features

• Pull Weight: Approx. 5.5 lbs (measured with standard trigger pull gauge)
• Reset Distance: Reduced by approximately 40% compared to factory trigger
• Pre-Travel/Over-Travel: Minimized via precision-machined sear geometry
• Break: Clean, defined wall with minimal creep
• Safety: Center-mounted pivoting safety preserves all passive safeties (trigger safety, sear block)
• Installation: Direct drop-in; no fitting, filing, or polishing required
• Sear Marking: Laser-engraved Apex logo indicates processed sear—color may vary, but function is identical

Install Difficulty

Rating: 2 out of 5
Tools Needed: 3/32” punch, small hammer, slave pin (or 1/16” punch), needle-nose pliers, safety glasses. Armorer experience recommended but not required. Detailed instructions included.

Frequently Asked Questions

Will this kit work in my FNS-9 Long Slide?

Yes. The kit is compatible with both standard FNS Compact and Long Slide variants in 9mm and .40 S&W. No additional parts are needed.

Does the trigger color affect performance?

No. The sear color (black, gray, or other) is cosmetic only. The sear receives all necessary surface treatments and laser engraving regardless of appearance. FDE triggers have been discontinued due to supply chain issues—contact customer service if you received an FDE trigger and are unsatisfied with the color.

Do I need to replace any factory springs or pins?

No. The kit includes all necessary springs and uses the factory trigger bar and hammer assembly. The sear and trigger are drop-in replacements. No spring tuning required.

Shipping: Ships within 1-2 business days via USPS Priority or UPS Ground. Warranty: This component is backed by a limited lifetime warranty against manufacturing defects. Modifications to the sear, trigger, or springs void warranty. See full terms at checkout.