Sig Sauer P320 Fire Control Unit Black – Custom Works

Description

The Sig Sauer P320 Fire Control Unit Black is the part that makes the P320 platform what it is, sold on its own. MAG5 Firearms stocks this Custom Works version with a titanium frame, a black nitride finish and a flat-face skeletonized trigger, ready to drop into whatever grip module, slide and barrel combination you want to build.

Why the Fire Control Unit Is the Firearm

On a P320 the serialized component is not the frame or the slide. It is the fire control unit, the small stainless chassis that holds the trigger group. Everything else is a part that can be bought and swapped freely.

That is why the Sig Sauer P320 Fire Control Unit Black transfers through an FFL like a complete pistol. It is also why one purchase can become a full-size duty gun, a compact carry pistol and a subcompact, without ever going back to a dealer.

What Custom Works Changes

The standard P320 fire control unit uses a stainless frame and a curved trigger. This one uses titanium and a flat-face skeletonized trigger, which is the single most common aftermarket upgrade P320 owners make.

A flat trigger gives more consistent finger placement and a break that feels lighter than it measures. Skeletonizing removes mass from the moving part, which shortens reset marginally and looks the part.

Sig Sauer P320 Fire Control Unit Black Specifications

Building Around the Sig Sauer P320 Fire Control Unit Black

Grip modules are available in full-size, carry, compact and subcompact, in polymer, in aluminum AXG and in tungsten-infused TXG. Slide assemblies come in every barrel length SIG offers and in several calibers.

Because it accepts 9mm, 40 S&W and 357 SIG components, a single unit covers three cartridges. Nothing else in the handgun market works quite this way.

Who Buys One

Some buyers want a specific configuration SIG never sold as a complete pistol. Others already own P320 parts and want a second chassis so both builds can stay assembled.

Either way the Sig Sauer P320 Fire Control Unit Black is the cheapest route into the platform, because everything except this component can be sourced as an ordinary part.

Transfer and Availability

This is a serialized firearm component and must transfer through an FFL exactly as a complete pistol would. MAG5 Firearms is a licensed FFL dealer in Pennsylvania and ships to your local FFL.

It arrives new in factory packaging with documentation. A gold nitride version and a P365 equivalent are cataloged separately.

Other Sig Sauer P320 Fire Control Unit Black options and P320 components are listed in our handgun catalog. Factory specifications are published by SIG SAUER.

Every Sig Sauer P320 Fire Control Unit Black sold by MAG5 Firearms ships new in the factory packaging with the accessories SIG SAUER includes, and transfers to your chosen FFL. The Sig Sauer P320 Fire Control Unit Black is a regulated firearm and we verify licensing before any order leaves the shop.