THE SIG SAUER P365 CUSTOM WORKS FIRE CONTROL UNIT is the serialized core of the modular P365 platform, giving shooters the foundation to build a customized micro-compact carry pistol around factory SIG Sauer components.
This black P365 FCU is listed by SIG Sauer as a Custom Works Fire Control Unit for 9mm / .380 Auto P365 configurations with a flat blade trigger. SIG’s P365 FCU platform is designed around modularity, allowing the serialized FCU to be paired with compatible grip modules, slides, barrels, magazines, optics, and accessories.
Because the FCU is the serialized firearm component, this item must ship to a Federal Firearms License holder for transfer. It is not a complete pistol and does not include a slide, barrel, grip module, magazine, or optic.
Why the P365 FCU Matters:
The P365 FCU gives customers a factory SIG Sauer starting point for building a personalized P365. Instead of buying a complete pistol and replacing major components, the FCU lets the user select the compatible grip module, slide, barrel, magazine, and accessory configuration that best fits their carry or range needs.
Important Compatibility Note:
This is a serialized fire control unit only. Confirm compatibility with your intended P365 slide, grip module, barrel, magazine, and caliber configuration before ordering.
Ideal Applications:
- Custom P365 Builds: Factory serialized FCU foundation for personalized configurations
- Carry Optimization: Build around preferred grip size, slide length, sights, and optic setup
- Modular Platform Use: Compatible with a wide range of P365 parts and accessories
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