Change This If You're Using a .45-10mm Conversion Barrel

Published on July 3, 2024
Duration: 27:10

This guide details the process of installing a 10mm conversion barrel into a Glock 21 frame, emphasizing the critical step of replacing the factory extractor with a 10mm-specific one for reliability. It also covers recommended upgrades like a tungsten guide rod and provides insights into Glock's internal mechanisms, including the safety plunger and extractor depressor plunger assembly.

Quick Summary

To reliably shoot 10mm from a Glock 21, install a 10mm conversion barrel and, crucially, replace the factory .45 ACP extractor with a 10mm version. This ensures proper extraction of the 10mm case rim. Additionally, upgrading to a tungsten guide rod is recommended to manage the increased recoil of the 10mm cartridge.

Chapters

  1. 00:04Introduction to Glock Cross-Compatibility
  2. 00:39Glock 21 SF Frame Overview
  3. 01:31Shooting 10mm from a .45 ACP Glock
  4. 01:46Understanding the 10mm Conversion Barrel
  5. 02:14Why Choose 10mm Ammunition
  6. 02:53Installing the 10mm Conversion Barrel
  7. 03:07The Importance of the 10mm Extractor
  8. 04:17Slide Disassembly for Extractor Swap
  9. 04:42Guide Rod Function and Replacement
  10. 05:46Barrel Removal and Installation
  11. 06:43Essential Lubrication Points for Glock Barrels
  12. 08:54Extractor Removal and Installation Process
  13. 11:01Slide Cover Plate Removal
  14. 15:07Extractor Depressor Plunger (EDP) Assembly
  15. 16:56Removing the Extractor and Safety Plunger
  16. 17:54Comparing 10mm vs .45 ACP Extractors
  17. 18:57Reassembling the Slide with New Extractor
  18. 21:16Installing the EDP and Firing Pin
  19. 22:22Reinstalling the Slide Cover Plate
  20. 23:43Final Slide Reassembly
  21. 24:28Conclusion and Recommendations
  22. 26:26GlockStore Nashville Visit

Frequently Asked Questions

Can I shoot 10mm from a Glock 21?

Yes, you can shoot 10mm from a Glock 21 by installing a 10mm conversion barrel. It's crucial to also replace the factory extractor with a 10mm-specific one for reliable extraction and to use 10mm magazines.

What is the main reason to change the extractor when using a 10mm conversion barrel in a Glock 21?

The primary reason is reliability. The 10mm cartridge has a slightly different case rim dimension than .45 ACP, and a dedicated 10mm extractor is designed to grip it more effectively, preventing extraction failures and ensuring consistent cycling.

Should I upgrade the guide rod when converting a Glock 21 to 10mm?

It is highly recommended to upgrade from the factory plastic guide rod to a tungsten guide rod when shooting 10mm. The 10mm round is 'snappy' with more recoil, and a heavier tungsten guide rod helps manage this recoil more effectively.

Where are the critical lubrication points on a Glock barrel?

Key lubrication points include where the barrel hood intersects the ejection port, and the ring on the barrel that contacts the inside of the slide. These areas experience metal-on-metal contact during the articulating barrel's movement.

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