What is a modular handgun? Check this out - Mirzon

Published on April 8, 2025
Duration: 2:23

This video explains the concept of modular handguns, using the Sig P320 as a primary example. It highlights that the serial number is located on the fire control unit (FCU), which is distinct from traditional frame-mounted serial numbers found on firearms like Glocks. The video demonstrates a basic field strip to show the separation of the FCU from the grip module, emphasizing how different grip modules can alter the firearm's ergonomics and aesthetics.

Quick Summary

Modular handguns, like the Sig P320, are distinguished by their serial number being located on the fire control unit (FCU), not the frame. This design allows for extensive customization, enabling users to swap grip modules and slides to alter ergonomics and aesthetics, making the FCU the legally registered component.

Chapters

  1. 00:00Introduction to Modular Handguns
  2. 00:21Serial Number Location on Modular Handguns
  3. 00:49Basic Field Strip of a Modular Handgun
  4. 01:08Aftermarket Grip Modules (Mirzon)
  5. 01:55Reassembled Modular Handgun with Custom Grip
  6. 02:17Conclusion: Uniqueness of Modular Firearms

Frequently Asked Questions

Where is the serial number typically located on a modular handgun like the Sig P320?

On modular handguns, such as the Sig P320, the serial number is located on the fire control unit (FCU). This component is often found within the trigger assembly and lower frame, distinguishing it from traditional handguns where the serial number is usually on the firearm's frame.

What does 'modular handgun' mean in terms of customization?

A modular handgun allows for easy customization by separating the serialized fire control unit from components like the grip module and slide. This enables users to change the firearm's ergonomics, aesthetics, and even caliber (with compatible parts) by swapping out these modules.

How do aftermarket grip modules affect a modular handgun?

Aftermarket grip modules, like those from Mirzon for the Sig P320, can significantly alter a modular handgun's feel and appearance. They offer different textures, colors, magwell sizes, and ergonomic profiles, enhancing grip comfort and handling for the shooter.

What is the primary difference between a modular handgun and a traditional handgun like a Glock?

The key difference lies in the location of the serial number. Traditional handguns like Glocks have the serial number on the frame, while modular handguns, exemplified by the Sig P320, have the serial number on the fire control unit (FCU), allowing the frame/grip to be swapped.

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