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. 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.

73 Reviews Hide Reviews Show Reviews

  • 5
    Phenomenal Service

    Posted by John Turner on Jun 2nd 2023

    Purchased a Manual Safety installation for my Sig P320 40cal. As quoted, they milled my existing FCU and fitted factory SIG Sauer safety components and it works beautifully. Shipping was a Breese, delivered right to my door with signature. I highly recommend this company, craftsmanship, and parts. Their customer service was prompt and exceptional. You can't go wrong with ABPrototype

  • 5
    Manual safety install

    Posted by Lars on May 4th 2023

    Outstanding job. Great communication, answered all my Qs, speedy turn around time. Will get another done soon.

  • 5
    320 manual safety

    Posted by Ty on May 4th 2023

    Excellent work and speedy turnaround time. Very pleasant experience.

  • 4
    P320 safety

    Posted by Scott on May 3rd 2023

    Service was quick, everything functions perfectly. The take down lever was extremely "stiff" but working it a complete cycle seated the fcu and works perfectly. Great job, fast turn around and much more trust in my p320 now.

  • 5
    P320 Manual Safety

    Posted by Joseph Prudhomme on Apr 28th 2023

    Abprototype process was easy and fast. Was suppose to take 2 weeks, but I got my gun back in about 10 days. The work was done perfectly. The manual safety looks like it came from the factory. Thanks for what you do.

  • 5
    Phenominal service

    Posted by Justin W on Apr 28th 2023

    AB Prototype did a phenominal job converting my pistol to having a manual safety. If you can’t find an M17 with a manual safety and collect Mil-clones like I do, this service is invaluable. Two week turn around from the day I shipped to them was great, and I can’t find any work marks. A fantastic job, thank you!

  • 5

    Posted by Mark A Hendrix on Apr 26th 2023

    Great job guys!! Super fast completion and return. I highly recommend AB. Thanks again.

  • 5
    XTen Safety Conversion

    Posted by Ryan on Apr 26th 2023

    Great job on this conversion and excellent customer service. The work performed looked like factory quality or better and functions great!

  • 5
    SigP320 manual safety conversion

    Posted by Matt B on Apr 24th 2023

    Outstanding customer service, very responsive to questions, job was completed and sent back to me via FedEx within a week! Thanks!