The SIG Custom Works P320 Fire Control Unit enables users to build their own pistol.

SIG Sauer just launched an exciting new feature, enabling shooters to design their own pistol based on the company’s popular P320 platform. The Custom Works P320 Fire Control Unit (FCU) enables a new level of customization. It enables full customization and personalization via the P320 Studio.

SIG Custom Works P320 Fire Control Unit

SIG first announced the P320 FCU back in August. Our friends at had the exclusive first look at the unit.

“The P320 pistol is renowned for both its unprecedented modularity and unmatched capability to become the pistol of choice amongst firearms enthusiasts and all branches of the U.S. Military,” said Tom Taylor, Chief Marketing Officer and Executive Vice President, SIG SAUER, Inc.  “The soul of the P320, and the driving force behind its modularity, is the patented, serialized fire control unit that gives the consumer the ability to build their dream pistol from the ground up.”

The P320 FCU comes as the serialized part. It features a titanium nitride coating and skeletonized trigger. It also comes with an exclusive FCU serial number. The unit works with 9mm, .357 SIG and .40 S&W.

“In conjunction with the availability of the P320 FCU in retail stores, we are also launching the P320 Studio online at  This level of customization is an industry first and the virtual experience offers the consumer countless options and endless possibilities to build and view their custom P320,” continued Taylor.  “We are planning to take the customization element of this one step further, because we recognize that the consumer wants what they want, and sometimes that’s something SIG doesn’t offer.  By working hand-in-hand with premium after-market component manufacturers, FCU customers can quite literally build their dream P320 however they want.” 

The Future of Custom Work

The P320 FCU is great for the future of the line of pistols. Firstly, plenty of custom houses will be partnering with SIG for builds. Expect to see new custom P320s on the market soon, like this P320 X-Comp Ultra from Parker Mountain Machine.

The P320 Studio also gives consumers a unique online experience. Users can choose a grip module, slide, barrel, guides and springs, optics or complete CAL-X Kits. All parts within the P320 Studio come direct from The P320 FCU retails for $299.99. For even more info, please visit

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