product code:8900160



availability:  64 In stock


Limited to 1 per order.

The Sig Sauer Custom Works P320 Fire Control Unit (FCU), is a serialized firearm and is required to ship to an FFL dealer. Starting with the FCU you can add P320 grip modules, barrels, and slides to make a customized P320 pistol. Want multiple custom P320 pistols? Just take the FCU out of one setup and place it in another. Everything from a sub compact concealed carry pistol to a competition X-5 is possible with FCU.

From the beginning, the P320 was built to be a pistol that could adapt to meet the your specific needs. From grip modules and magazines to custom slides, barrels, and optics, the P320 can be configured in thousands of different ways to make your P320 unique and exactly the pistol you are looking for.

Click here to see all P320 parts we offer to build your dream handgun. 

These are serialized and must have a 4473 Application for firearm transfer completed before transfer, or shipped to an FFL.

  • Exclusive Titanium Nitride Frame
  • Titanium Nitride Skeletonized Trigger
  • Compatible with all 9mm/357SIG/40SW P320 Post-Upgrade accessories

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