SIG Sauer Standalone P320 FCU

SIG Sauer

$299.99 - $349.99
(17 reviews) Write a Review
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Here is SIG's OEM Standalone P320 complete FCU with all Factory SIG FCU parts and the skeletonized flat trigger.  Includes the flat, skeletonized trigger from the X5 Legion model, plus various FCU and trigger finishes available. The FCU will work with most P320 9mm, 40SW or 357SIG (not 45ACP or manual safety versions). ALL FCU PARTS are post-upgrade with the new drop parts. Will not work with pre-upgrade slide. Features custom "FCUXXXXXX" serial number (GOLD FCU ONLY, STAINLESS OR BLUE FCUS HAVE STANDARD SEQUENTIAL SERIAL NUMBER).

Includes: Factory SIG Sauer serialized FCU, all SIG FCU parts assembled in FCU with skeletonized flat trigger, extended X-Series slide catch and takedown lever. Pistol shown for reference only. Stainless or Blue FCUs do not include any factory packaging. Assembly grease, oil, etc. may be present. All parts are NEW. NOT ALL OPTIONS MAY BE IMMEDIATELY AVAILABLE. PLEASE NOTE: ONLY THE GOLD FCUs CAN BE REGISTERED WITH SIG SAUER. STAINLESS AND BLUE FCUs ARE BUILT FROM EXISTING PISTOL FCUs (ALL NEW SIG OEM PARTS).

OPTIONAL (checkbox): Add manual safety conversion to add the SIG factory manual safety lever. See details HERE.

Barrel, Slide, Optic, Grip, Magazines, Chamber flag, etc. are NOT INCLUDED.

FFL is REQUIRED for transfer of frame. Serialized frame not available in CA unless Law Enforcement. Federal law requires that the purchaser must be 21 years of age or older to transfer a serialized frame.

For quickest shipping please have your FFL send their license to our email: We will only ship to the FFL address.

17 Reviews Hide Reviews Show Reviews

  • 5
    320 FCU

    Posted by Mark Quinn on Feb 15th 2024

    Excellent quality and company is easy to work with.

  • 5

    Posted by JAMES TAYLOR on Dec 2nd 2023

    I got what I ordered. Good price, shipped promptly.

  • 5

    Posted by Tyson on Nov 4th 2023

    Got two blue ones and they look pretty good in a black and gray P320 frames.

  • 4
    FCU Standalone

    Posted by MARQEITH on Oct 21st 2023

    The FCU worked perfectly in every aspect. The only downside that I had was dealing with customer service for the delivery and pick up. Other that I would buy again in a heartbeat.

  • 5
    Standalone FCU

    Posted by Abe on Oct 13th 2023

    After receiving and installing the blue PVD FCU everyone agrees that it was exactly what my custom build needed. It functioned great and even feels smoother than the original. I will definitely be looking to either buy more parts like this or pay for the coating service. Great customer service too as other parts came in stock as I was waiting for it to ship and they added it to the order so I wouldn’t have to wait for 2 packages.

  • 5
    P320 45acp standalone FCU

    Posted by Joseph Newman on Mar 25th 2023

    Fast shipping.Only place I know of that offers 45acp fcu.Sig Sauer refuses to offer these

  • 5
    P320 FCU

    Posted by John on Feb 28th 2023

    Excellent product, lightening fast shipping!

  • 5
    FCU with manual safety

    Posted by LC on Feb 22nd 2023

    Great work on adapting the FCU for a manual safety. Done at a reasonable price, similar to buying an FCU and adding the safety yourself, and delivered timely. Very satisfied with purchase.

  • 5
    Nicely done!

    Posted by Rol on Feb 10th 2023

    Nicely done! It was definitely worth the wait. I have got to believe you will be getting more business re these conversions.