New Glock Gen 5 Model 21 MOS 45 ACP Review

Published on April 26, 2023
Duration: 25:13

This guide details the field stripping process for the Glock 21 Gen 5 MOS, as demonstrated by a seasoned firearm reviewer. It covers the essential steps for safe disassembly, inspection of key components like the barrel and slide, and reassembly. The review highlights the Gen 5's updated features, including the nDLC finish and Glock Marksman Barrel, and provides insights into its performance and ergonomics.

Quick Summary

The Glock 21 Gen 5 MOS in .45 ACP features significant upgrades including improved ergonomics with no finger grooves, enhanced durability via an nDLC finish, and modularity with the MOS system for red dot sights. Its large frame aids in managing .45 ACP recoil, and the Glock Marksman Barrel contributes to accuracy.

Chapters

  1. 00:00Introduction: Glock 21 Gen 5 MOS .45 ACP
  2. 01:08Glock 21 History and Evolution
  3. 02:54Generational Comparisons (Gen 3 vs Gen 5)
  4. 04:08Magazines and Ergonomics (No Finger Grooves)
  5. 05:20Slide and Barrel Features (Front Serrations, nDLC, GMB)
  6. 07:51Frame Size Comparison (.45 ACP vs 9mm)
  7. 09:40Internal Upgrades (Ambi Slide Stop)
  8. 12:55Included Accessories (MOS Plates, MBS)
  9. 14:23Trigger and Weight Specs
  10. 16:29Range Performance and Accuracy (.45 ACP Recoil)
  11. 18:16Field Stripping and Internal Inspection
  12. 20:19Final Assessment: Pros and Cons

Frequently Asked Questions

What are the key upgrades in the Glock 21 Gen 5 MOS compared to previous generations?

The Gen 5 Glock 21 removes finger grooves for better ergonomics, adds front slide serrations, features an nDLC finish for durability, includes the Modular Optic System (MOS) for red dot sights, and has an ambidextrous slide stop. The Glock Marksman Barrel (GMB) also enhances accuracy.

How does the Glock 21 Gen 5 MOS handle recoil in .45 ACP?

While .45 ACP has noticeable recoil, the large, heavy frame of the Glock 21 Gen 5 MOS helps to absorb and manage it effectively. Shooters with larger hands will find the grip more comfortable and conducive to recoil control.

What is the trigger pull weight and feel of the Glock 21 Gen 5 MOS?

The trigger pull weight was measured at approximately 5 lbs 3.4 oz. While described as slightly 'mushy,' it is considered an improvement over previous generations, offering a more refined break.

What accessories are included with the Glock 21 Gen 5 MOS?

The Glock 21 Gen 5 MOS typically comes with the Modular Optic System (MOS) adapter plates for mounting red dot sights, and the Modular Backstrap System (MBS) with various sizes and beavertail options to customize grip fit.

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