Magpul Instructions - AMAG SG9 P365 10 & 12

Published on February 27, 2026
Duration: 1:35

This guide details the installation of Magpul's AMAG SG9 floor plates and grip extensions for the Sig Sauer P365. It covers the removal and installation process for both the 10-round and 12-round magazine variants, emphasizing proper seating of lock plates and extension components. Proper technique ensures reliable magazine function after the upgrade.

Quick Summary

Learn to install Magpul AMAG 10 SG9 and 12 SG9 floor plates and grip extensions on your Sig Sauer P365. The process involves removing the old floor plate by depressing the lock plate, then installing the new components, ensuring the lock plate is fully seated for secure attachment and reliable function.

Chapters

  1. 00:05AMAG SG9 P365 Magazine Features
  2. 00:27AMAG 10 SG9 Floor Plate Removal
  3. 00:36AMAG 10 SG9 Floor Plate Installation
  4. 00:52AMAG 12 SG9 Floor Plate Removal
  5. 01:00AMAG 12 SG9 Grip Extension Installation
  6. 01:16AMAG 12 SG9 Extension Plate Installation

Frequently Asked Questions

What are the Magpul AMAG SG9 extensions for the Sig Sauer P365?

The Magpul AMAG SG9 line includes floor plates and grip extensions for Sig Sauer P365 magazines. The AMAG 10 SG9 offers standard and extended floor plates for micro frames, while the AMAG 12 SG9 provides a grip extension for X, XL, standard, and micro frames.

How do I install the Magpul AMAG SG9 floor plate on a P365 magazine?

To install, turn the magazine upside down, depress the lock plate, and slide the old floor plate off. Then, slide the new floor plate into position, ensuring the lock plate is fully seated within it.

What is included with the Magpul AMAG 12 SG9 for the P365?

The AMAG 12 SG9 kit includes a floor plate, an extension plate, and a grip extension. This package is designed to enhance the grip and ergonomics of the Sig Sauer P365 magazine across various frame sizes (X, XL, standard, micro).

What is the purpose of the lock plate in Magpul AMAG SG9 installations?

The lock plate is a critical component that secures the floor plate or grip extension to the magazine body. Ensuring it is fully seated is essential for the proper function and retention of the installed accessory.

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