P320 Manual Safety Conversion

AB Prototype

$199.00
(124 reviews) Write a Review
SKU:
Manual_Safety_Conversion
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Caliber:
All Calibers
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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 without cuts at the bottom 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.

124 Reviews Hide Reviews Show Reviews

  • 5
    Safety on P320

    Posted by Greg on Aug 7th 2026

    I’ve had two installed and going to have them install two more. Excellent work and highly recommend!!!

  • 5
    Fantastic work

    Posted by Jay on Aug 3rd 2026

    Great communication, fantastic work, very fast turnaround. Highly recommend these guys!

  • 5
    P320 Manual Safety Conversion

    Posted by Dan Ward on Jul 4th 2026

    First rate operation. AB Prototype’s workmanship and machining is as good or better than the factory, their turn around time is much better. There is no reason to carry a single action P320 without this manual safety.

  • 5
    Manual safety conversion

    Posted by Garrett Keeling on Jul 3rd 2026

    Great value for anyone not wanting to make the cuts themselves. Safety action is crisp and cuts are precise. Clears an OWB holster just fine.

  • 5
    P320 Manual Safety Conversion

    Posted by Doug Daugherty on Apr 10th 2026

    Quality Work. Can't tell its not factory installed. Will definately be using AB Prototype again.

  • 5
    Sig p-230

    Posted by Robert Payne on Apr 8th 2026

    Excellent service and work.

  • 5
    P320 SAFETY CONVERSION

    Posted by Mike on Jan 22nd 2026

    AB PROTOTYPE DID AN EXCELLENT JOB ON MY P320 WITH A MANUAL SAFETY CONVERSION. I WOULD RECOMMEND THIS SHOP FOR CUSTOM WORK.

  • 5
    Perfect installation and reliable peace of mind

    Posted by Jay on Nov 10th 2025

    The folks at AB Prototype were awesome! They answered my questions when I called, were responsive when I emailed them further questions. They updated the progress of my frames in real time, so all I had to do was try to be patient and watch my order status on their website. Great folks, great work, great value and a great experience!

  • 5
    P320 manual safety conversion

    Posted by Victor on Oct 20th 2025

    Machined very well just like oem