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.

89 Reviews Hide Reviews Show Reviews

  • 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.

  • 5
    P320 Manual Safety Install

    Posted by Justin Murray on Mar 30th 2024

    Highly recommended. Awesome service! Quick turnaround and works great. Thank you AB Prototype.

  • 5

    Posted by Mark Tobias on Mar 8th 2024

    Fast turnaround - in the shop for a day - looks factory installed, works perfectly. Feel safer as EDC when now in condition one not zero - and reports of the P320 AD's. Especially with powerful 10mm, scary. Good job!

  • 5
    P320 Manual Safety

    Posted by Tom Harrison on Jan 16th 2024

    AB did a terrific job installing the manual safety on my Sig P320! Their excellent work was accompanied by a quick turnaround.

  • 5
    P320 Manual Safety Install

    Posted by Jerry on Dec 26th 2023

    I might have gotten lucky but turn around was way faster than I expected. Gun looks like it came from the factory with the safety on it. Pay One Price included all parts and work. Great fit and finish. Function check worked as expected. Great job to the guys at AB.

  • 5
    P320 Manual Safety Conversion

    Posted by Tony Palumbo on Nov 22nd 2023

    Exceptional work; quick turn-around; great service. Alex has worked on several projects for me; always top notch!

  • 5
    P320 safety conversion

    Posted by John Donnell, Sr. on Nov 22nd 2023

    Very well done, super fast turn around. Thank You again!

  • 5
    Pro work

    Posted by Dan on Oct 24th 2023

    Fits right in, works perfectly, looks like it came from the factory that way