Sig Sauer 320: Changing Calibers (How to)

Published on April 20, 2018
Duration: 2:03

This guide details how to perform a caliber change on a Sig Sauer P320 using an X-Change Kit, as demonstrated by Rick Marvick from Sig Sauer. The process involves safely disassembling the firearm to remove the Fire Control Unit (FCU) and then reassembling it with the new caliber's slide and grip module. The FCU is the serialized part that remains with the user, allowing for modular caliber and grip changes.

Quick Summary

To change the caliber of a Sig Sauer P320, first ensure the firearm is unloaded. Disassemble the pistol by rotating the takedown lever, removing the slide, and then removing the Fire Control Unit (FCU). Reassemble with the new caliber's slide and grip module, ensuring the FCU is correctly seated.

Chapters

  1. 00:00Introduction to Sig P320 Caliber Change
  2. 00:07Safety and Initial Disassembly
  3. 00:17P320 Disassembly Steps
  4. 00:37Understanding the X-Change Kit Purpose
  5. 00:49Unboxing the Caliber Exchange Kit
  6. 00:57Kit Contents: Manual and Slide Catch Lever
  7. 01:12Installing New Grip Module and FCU
  8. 01:23Reinstalling the Takedown Lever
  9. 01:34Installing New Slide and Final Assembly
  10. 01:47Conclusion and Availability

Frequently Asked Questions

How do you safely disassemble a Sig Sauer P320 for a caliber change?

First, ensure the P320 is unloaded by locking the slide to the rear and removing the magazine. Visually and physically inspect the chamber. Rotate the takedown lever 90 degrees, remove the slide, then push the takedown lever out to remove it and the Fire Control Unit (FCU).

What is the serialized part of a Sig Sauer P320?

The serialized part of a Sig Sauer P320 is the Fire Control Unit (FCU). This component houses the trigger and all internal mechanisms and must remain with the owner for legal compliance when changing caliber or grip modules.

What components are included in a Sig Sauer P320 X-Change Kit?

A Sig Sauer P320 X-Change Kit typically includes a new slide assembly, a grip module, a magazine, an owner's manual, and potentially an updated slide catch lever for compatibility with newer grip modules.

Can I change the caliber of my Sig P320 without special tools?

Yes, changing the caliber of a Sig Sauer P320 using an X-Change Kit is designed to be tool-less. The process primarily involves safe disassembly and reassembly of the firearm's main components.

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