1921 VS 1928 Thompson Machinegun (FullAuto)

Published on March 17, 2017
Duration: 9:23

This video provides an expert-level comparison between the Thompson Model 1921 and Model 1928 submachine guns, detailing their historical development, technical differences, and performance characteristics. The expert highlights the Blish lock mechanism and the impact of rate of fire on controllability.

Quick Summary

The Thompson Model 1928 offers superior controllability in full-auto fire compared to the Model 1921, primarily due to its reduced rate of fire (650 RPM vs. 900 RPM). This slower rate, achieved with heavier internal parts, makes managing recoil and staying on target much more feasible.

Chapters

  1. 00:00Introduction of Thompson 1921 vs 1928
  2. 00:391921 Thompson History & Rate of Fire
  3. 01:29Development of the 1928 Model for Control
  4. 02:50Magazine Variations: Sticks and Drums
  5. 03:541921 Live Fire Demonstration (900 RPM)
  6. 04:581928 Live Fire Demonstration (650 RPM)
  7. 07:43Technical Specs: The Blish Lock Mechanism

Frequently Asked Questions

What are the main differences between the Thompson Model 1921 and 1928?

The primary difference lies in their rate of fire: the 1921 fires at approximately 900 rounds per minute, while the 1928 was modified to fire at a slower 650 RPM for improved controllability. This was achieved through heavier internal components.

How did the Blish lock affect the Thompson's operation?

The Blish lock was an innovative mechanism designed to delay the opening of the bolt, contributing to the firearm's reliability and controllable firing cycle. It was a key feature of early models but was omitted in later M1 and M1A1 variants.

Which Thompson model is easier to control in full-auto?

The Thompson Model 1928 is significantly easier to control in full-auto fire due to its reduced rate of fire (650 RPM) compared to the Model 1921's 900 RPM. Factors like a horizontal foregrip and sling also aid in managing recoil and muzzle climb.

What were the common magazine types for the Thompson submachine gun?

Early Thompsons utilized 20-round stick magazines. Higher capacity options included 50 and 100-round drum magazines, though these were often noted for being noisy and prone to jamming in combat conditions.

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