How to change the grip module on a Sig P320

Published on January 30, 2020
Duration: 4:03

This guide details the process of replacing the factory grip module on a Sig Sauer P320 with a Wilson Combat module. It covers the safe disassembly, removal and installation of the Fire Control Unit (FCU), and reassembly. The video emphasizes proper tool usage and safety checks throughout the procedure, offering specific advice for left-handed shooters regarding the magazine catch.

Quick Summary

Changing the Sig P320 grip module involves safely unloading the firearm, removing the slide and takedown lever, and then carefully releasing the Fire Control Unit (FCU). The FCU is then aligned and pressed firmly into the new grip module, potentially using a soft mallet. Reassembly includes reinstalling the takedown lever and slide, followed by a function check.

Chapters

  1. 00:00Introduction
  2. 00:24Disassembly and Safety Check
  3. 00:46Removing the Fire Control Unit (FCU)
  4. 01:07Installing the FCU into New Module
  5. 01:53Reassembly and Function Check
  6. 02:44Reversing the Magazine Catch

Frequently Asked Questions

How do you safely remove the Fire Control Unit (FCU) from a Sig P320 grip module?

First, ensure the P320 is unloaded. Remove the magazine, lock the slide back, and visually confirm the chamber is empty. Then, remove the slide and takedown lever. Press upward and forward on the trigger to release the FCU from the grip module.

What tools are needed to change a Sig P320 grip module?

Essential tools include a punch for the takedown lever, a soft-ended mallet for seating the FCU, and a dental tool for manipulating the magazine catch keeper, especially for left-handed shooters. Ensure the firearm is unloaded before starting.

Can I swap grip modules on any Sig P320 model?

Yes, the Sig P320 is designed with a modular system. The Fire Control Unit (FCU) is the serialized component, allowing you to swap grip modules across different sizes and styles, like installing a Wilson Combat module, as long as they are compatible with the FCU.

What is the purpose of the alignment ears on the Sig P320 FCU?

The alignment ears on the rear of the Sig P320 Fire Control Unit (FCU) are crucial for correctly positioning it within the grip module. They slot into corresponding grooves, ensuring proper alignment and secure seating for reliable function.

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