SIG SAUER Custom Works P320 FCU & Studio


SIG SAUER P320 Fire Control Units are now available. The heart of the pistol, these serialized parts can be combined with a myriad of factory OEM and after market parts from a variety of partners to create a truly custom pistol, with simple hand tools. There’s no need to involve a gunsmith. You can do it all on your own.

Now you can build your dream pistol from the ground up. The Custom Works FCU lets you create like never before. Countless options, endless possibilities.


  1. Been waiting on this since they aired the video back in September definitely getting this, I just wonder who will get number FCU000001,? Sig definitely stays 1 step ahead of the game their company is the best in the universe

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