Glock 20 Gen 4 vs Gen 3

Published on March 18, 2022
Duration: 19:33

This expert guide details the field stripping process for the Glock 20 Gen 3 and Gen 4, highlighting the key differences in their recoil spring assemblies. Hickok45, a veteran firearms reviewer, provides practical insights into how these internal changes, along with grip and magazine release variations, affect the shooting experience with both standard and heavy 10mm loads. The comparison concludes that while the Gen 4 offers ergonomic improvements, the recoil reduction is subtle.

Quick Summary

The Glock 20 Gen 4 features ergonomic upgrades like interchangeable backstraps and a reversible magazine release, plus a dual recoil spring assembly intended to reduce 10mm recoil. However, expert reviews indicate this recoil reduction is subtle (1-2%), with standard loads showing almost no difference compared to the Gen 3. Grip texture and aftermarket enhancements often have a more pronounced effect on perceived recoil.

Chapters

  1. 00:00Introduction & Dual Wielding
  2. 00:54Feature Comparison: Gen 4 Upgrades
  3. 02:24Shooting Comparison: Range Ammo
  4. 06:46Shooting Comparison: Heavy Loads
  5. 11:54Internal Inspection & Conclusion

Frequently Asked Questions

What are the main differences between the Glock 20 Gen 3 and Gen 4?

The Glock 20 Gen 4 features interchangeable backstraps for customizable grip size, a reversible magazine release, and a different grip texture. Internally, its most significant change is the dual recoil spring assembly, designed to reduce recoil compared to the Gen 3's single spring system.

Does the Glock 20 Gen 4 significantly reduce 10mm recoil compared to the Gen 3?

According to expert reviewer Hickok45, the recoil reduction from the Gen 4's dual recoil spring system is very subtle, estimated at only a 1-2% difference, even with heavy 10mm loads. Standard range ammo shows almost no perceptible difference.

What ammunition types were used in the Glock 20 Gen 3 vs. Gen 4 comparison?

The comparison utilized various 10mm Auto ammunition, including standard range loads like Federal American Eagle (180-grain) and heavier hunting ammunition such as Federal Trophy Bonded and Underwood loads. This allowed for testing across different pressure levels.

Is the Gen 4 recoil spring assembly a major upgrade over the Gen 3 for the Glock 20?

While the Gen 4 Glock 20 offers improved ergonomics and grip options, the recoil reduction from its dual recoil spring assembly is considered subtle. For existing Gen 3 owners, it may not be a 'game changer' in terms of felt recoil, with grip modifications often having a more noticeable impact.

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