2021 Sig Sauer P320 Custom Works Fire Control Unit

P320 Custom Works FCU

Stock #FCU-3379
MSRP: $349 USD
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Hi, my name is and I'm interested in this 2021 Sig Sauer Handgun P320 Custom Works Fire Control Unit . I'm in the area and you can reach me at or by phone at

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P320 Custom Works Fire Control Unit (FCU)

Start building your P320 with our Custom Works P320 Fire Control Unit.

From the beginning, the P320 was built to be a pistol that could adapt to meet the user’s 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.

The P320 CustomWorks Studio FCU program takes that idea and brings it to an unprecedented new level. Take a look at the video to get a more in-depth overview of what this program has to offer. You can also click one of the buttons above to either start building your custom P320 or to purchase your CustomWorks P320 FCU.

  • Exclusive Titanium Nitride Frame
  • Titanium Nitride Skeletonized Trigger
  • Custom "FCU######" Serial Number
  • Compatible with all 9mm/357SIG/40SW P320 Post-Upgrade accessories
  • Build a custom P320 with a full line of performance parts and accessories at sigsauer.com/configurator/p320
  • Status:
    New
  • Vehicle:
    2021 Sig Sauer P320 Custom Works Fire Control Unit
  • Model Number:
    8900160
  • Color:
    Gold
  • Stock Number:
    FCU-3379
  • Location:
    Harsh Outdoors, Eaton, CO 80615
  • Warranty:
    Manufacturer's w/ Extended Available

Our Location


Harsh Outdoors
600 Oak Avenue
Eaton, CO 80615

Prices shown are not final and do not include sales tax, dealer freight, set up fees, finance charges, vehicle registration fees, or any other fees required by law. Prices may be subject to changing incentives. If applicable, incentives may require a trade-in, financing, or other specific qualifications and restrictions. Reasonable efforts are made to keep information on this website accurate, but Dealer and/or its affiliates do not assume responsibility for omissions or for misprints or other errors displayed on this website. EPA mileage estimates are for newly manufactured vehicles only, so actual mileage will depend on how the vehicle is driven and maintained.