.40 S&W to 9mm Glock Conversion

Published on June 14, 2023
Duration: 0:29

This guide details the installation of a 9mm conversion barrel into a Glock .40 S&W slide, a modification that allows shooting 9mm ammunition from a .40 caliber firearm. The process involves disassembly of the slide, swapping the barrels, and reassembly. The video emphasizes the difference in bore diameter between the two calibers while maintaining the same outer diameter for slide compatibility.

Quick Summary

Installing a 9mm conversion barrel in a .40 S&W Glock allows you to shoot 9mm ammunition. The process involves field stripping the firearm, swapping the .40 S&W barrel for the 9mm conversion barrel (which shares the same outer slide dimensions), and reassembling. This modification offers benefits like lower ammo costs and reduced recoil.

Chapters

  1. 00:00Recoil Comparison
  2. 00:04Disassembly
  3. 00:08Barrel Comparison
  4. 00:16Installation and Reassembly

Frequently Asked Questions

Can I shoot 9mm ammunition from my .40 S&W Glock pistol?

Yes, by installing a 9mm conversion barrel designed for your specific Glock model. This barrel has a 9mm bore and chamber but is designed to fit within your .40 S&W slide, allowing you to safely fire 9mm rounds.

What is the main difference between a .40 S&W barrel and a 9mm conversion barrel for a Glock?

The primary difference is the internal bore and chamber diameter. A 9mm conversion barrel has a smaller bore to accommodate 9mm ammunition, while its external dimensions match the .40 S&W barrel to ensure compatibility with the slide.

Is installing a Glock conversion barrel a difficult process?

No, installing a Glock conversion barrel is generally a straightforward process that involves basic field stripping and reassembly. It requires no specialized gunsmithing tools and can be done by most owners with intermediate firearm handling skills.

What are the benefits of using a 9mm conversion barrel in a .40 S&W Glock?

The main benefits include the ability to shoot less expensive 9mm ammunition, potentially reduced recoil for faster follow-up shots, and the flexibility to use different ammunition types depending on your needs.

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