Sig Sauer's P320 FCU - Multiple Guns in One | Guns & Gear
This video demonstrates the modularity of the Sig Sauer P320 platform, focusing on the Fire Control Unit (FCU) as the serialized component. It shows how a single FCU can be used to build multiple firearm configurations, from a full-size range gun to a compact concealed carry pistol, by swapping slides and grip modules. The Sig Custom Shop FCU offers enhanced features like a Titanium Nitride finish and a skeletonized trigger.













