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Sig Sauer P320 Custom Works Fire Control Unit, Black Trigger
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$349.99
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SKU: 8900161-798681625970
Overview
Built around the modular P320 system, this fire control unit serves as the core component for assembling a handgun setup tailored to specific needs. It is intended for users who want to configure the platform with compatible slides, barrels, grip modules, and magazines rather than rely on a fixed factory layout. The Custom Works version includes a black PVD finished frame, a black PVD finished skeletonized trigger, and a custom FCU serial number. It is compatible with all 9mm/357SIG/.40SW P320 post-upgrade accessories, making it a practical foundation for a personalized range or duty configuration.
Why Hunters Choose the Sig Sauer
Core Fire
Control Unit for the modular
Supports Configuration
Multiple slides, barrels, grip modules,
Black Pvd
Finished frame and skeletonized trigger
Custom Fcu
Serial number included
Compatible 9mm,
9mm, .357 SIG, and .40
Key Features
- Custom Works Fire Control Unit for the SIG P320 modular platform
- Black PVD finished frame and skeletonized trigger
- Custom FCU serial number included
- Compatible with 9mm, .357 SIG, and .40 S&W P320 post-upgrade accessories
- Designed to work with various slides, barrels, grip modules, and magazines
Best Used For
- For shooters building a modular P320 setup with interchangeable slides, barrels, grip modules, and magazines.
- For users wanting a Custom Works FCU with a Black PVD finished frame and skeletonized trigger.
- For owners of compatible 9mm, .357 SIG, or .40 S&W P320 post-upgrade accessories.
- For hunters or outdoorsmen seeking a configurable handgun platform for range use and carry setup changes.
Specifications
| Blade Finish | Black PVD |
|---|---|
| Caliber Compatibility | 9mm/357SIG/40SW |
| Compatible With | All 9mm/357SIG/40SW P320 Post-Upgrade accessories |
| Fire Control Group | Yes |
| Frame | Black PVD finished frame |
| Grip Module Compatibility | Various grip modules |
| Magazine Compatibility | Various magazines |
| Modular | Yes |
| Platform | P320 |
| Serial Number | Custom FCU serial number |
| Trigger | Black PVD finished skeletonized trigger |
Pros
- Core Fire Control Unit for the modular P320 platform
- Supports configuration with multiple slides, barrels, grip modules, and magazines
- Black PVD finished frame and skeletonized trigger
- Custom FCU serial number included
- Compatible with 9mm, .357 SIG, and .40 S&W P320 post-upgrade accessories
Considerations & Trade-offs
- Requires compatible P320 Post-Upgrade accessories, so it is not a standalone complete pistol component.
- Designed around the modular P320 system, which means the final setup depends on the slides, barrels, grip modules, and magazines selected separately.
- The Black PVD finish and skeletonized trigger are specific configuration details, but the listing does not provide broader performance or durability claims.
- Compatibility is listed for 9mm/.357 SIG/.40 S&W P320 Post-Upgrade accessories only, so fit should be verified against the intended build.
Suggested Comparisons
- Pistol fire control units
- Modular handgun upgrade components
- Pistol frame and trigger assemblies
- P320-compatible accessories
Suggested Accessories
- Pistol grip module
- Pistol slide assembly
- Pistol barrel
- Pistol magazine
Frequently Asked Questions
What is included in the SIG P320 Custom Works Fire Control Unit package?
The source data identifies the product as the P320 Custom Works Fire Control Group (FCU) with a Black PVD finished frame, Black PVD finished skeletonized trigger, and a custom FCU serial number. It does not list any additional included parts.
What P320 configurations is this FCU compatible with?
It is described as compatible with all 9mm, .357 SIG, and .40 S&W P320 post-upgrade accessories. The P320 platform can also be configured with various slides, barrels, grip modules, and magazines.
Is this a complete pistol or just the fire control unit?
This product is the Fire Control Unit (FCU), described as the heart of the modular P320 platform. The provided data does not describe it as a complete pistol.
Does the product data specify the trigger style or finish?
Yes. The short description states that it has a Black PVD finished skeletonized trigger and a Black PVD finished frame.
Can I use this FCU with all P320 parts?
The data only states compatibility with all 9mm, .357 SIG, and .40 S&W P320 post-upgrade accessories. It does not claim compatibility with every P320 part or configuration.