P320 Manual Safety Conversion

AB Prototype

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Manual Safety Conversion for a SIG Sauer P320

This is a SERVICE to convert your existing SIG P320 to manual safety (works for most Gen 1, post-upgrade, AXG, X-Ten, Wilson Combat, ZEV, etc). This service includes SIG Sauer OEM manual safety parts and grip cut, as required. We can cut factory frames. 

Perfect for your EDC P320 or competition!

We precision cut the manual safety pocket in ANY P320 FCU in 9mm, 40S&W, 357SIG, 10mm or 45ACP to exact SIG Sauer specifications (X-Ten Carry Comp cannot be converted due to the slide width). Each frame is tested for fit and function.

The SIG manual safety parts are exchanged for your existing non-manual safety FCU parts. Grip is cut as required.

Includes: CNC machine your FCU for the P320 Manual Safety Lever. Exchange non-safety parts with manual safety parts. Cut polymer SIG P320 grip (SIG, Wilson Combat and other grips ok, Polymer80 requires additional customer modifications, AXG or Icarus aluminum grip +$10, inserts will not be cut). Function test. Lead time can be up to 2 weeks, but is often less.

We will reply to your order confirmation with shipping instructions. We are a licensed firearms manufacturer and can receive and return firearms directly to customers' residence address only. All completed FCUs must have a serial number and must be accompanied by a copy of valid state-issued driver's license, CCW or ID card (no PO Boxes for return address). Conversion may not work with all aftermarket trigger bars such as the standard forward-set Apex trigger bar (manual safety version will work).

Shipping charges cover return shipping only, signature is required upon return. When shipping please do not include cases, manuals, slides, optics, etc. unless specifically necessary for other services.

FCU Parts, Barrel, Slide, Grip, Magazines, etc. are obviously NOT INCLUDED.

PLEASE NOTE: AB Prototype modifications to your frame are not authorized by SIG Sauer or JSD Supply. Any modifications to these frames will most likely void any existing manufacturer warranty. AB Prototype does not provide any additional warranty, neither expressed nor implied. We only guarantee fit and function of the manual safety lever on completed frames.

96 Reviews Hide Reviews Show Reviews

  • 5
    P320 safety conversion

    Posted by John Hutchinson on Jun 10th 2024

    Great job on installing the manual safety on my p320 AXG, turn around time was fantastic. Thanks AB Prototype.

  • 5
    Sig p320 safety conversion

    Posted by Eric Hackenbracht on Jun 6th 2024

    I sent my Spectre X compact for the installation of the manual safety as I’m an old guy, and I just wanted a manual safety. My FCU and grip module came back looking great and functioning perfectly as well. I was concerned that the trigger pull might be affected, but I can tell no difference. Great service, great people to deal with, I will be a repeat customer.

  • 5
    Manual safety conversion

    Posted by John Hutchinson on Jun 5th 2024

    Great job with the cut out and installation of the manual safety on the Sig P320. Would use ab prototype again

  • 5
    Safety lever installed

    Posted by Donald F Allen on May 28th 2024

    Outstanding service and workmanship, highly recommend.

  • 5
    P 320 manual safety install

    Posted by Kevin Noyes on May 22nd 2024

    Excellent to deal with and they do outstanding work . Turn around time was very quick and they have excellent communication on your order. I highly recommend their work !

  • 5
    P320 manual safety conversion

    Posted by Jim McManis on May 17th 2024

    The conversion was exactly what I was looking for. The entire process was very simple and easy. I would definitely recommend AB Prototype if you are looking to have this done.

  • 5
    P320 MS Conversion

    Posted by Robert Law on Apr 28th 2024

    Nice job, operates and looks great. Now have the same manual of arms as my M17 & M18. Thank you.

  • 5
    320 Safety

    Posted by John Charles Billies on Apr 10th 2024

    Nice people. Second one for us. Professional and prompt. 8-day turnaround.

  • 5
    Safety conversion for Sig P320

    Posted by Dennis on Apr 5th 2024

    Very high quality. Works perfectly. Completely indistinguishable from factory. took less than 2 weeks.