M1 Thompson: Savage Simplifies the SMG

Published on April 28, 2024
Duration: 18:02

The M1 Thompson represents a significant simplification of the original Thompson submachine gun, driven by the urgent production needs of World War II. Savage Arms developed this streamlined version, removing complex features like the Blish lock and vertical foregrip, and adopting a simple blowback action. While only produced for a short period before the M1A1, the M1 was crucial in increasing the availability of this iconic SMG.

Quick Summary

The M1 Thompson, developed by Savage Arms, simplified the original design by removing the Blish lock, adopting a horizontal foregrip, and using a simple blowback action. These changes were essential for mass production during WWII, making the iconic SMG more affordable and efficient to manufacture.

Chapters

  1. 00:00Introduction to the M1 Thompson
  2. 00:31WWII Context & Need for Simplification
  3. 01:53Savage Arms & the M1 Prototype
  4. 03:17Testing and Adoption of the M1
  5. 04:22External Markings & Manufacturer ID
  6. 04:59M1 vs. 1928A1 External Features
  7. 05:46Cocking Handle & Sights Simplification
  8. 07:10Stock & Control Simplification
  9. 08:36Receiver & Magazine Changes
  10. 09:54Internal Mechanics: Blish Lock Removal
  11. 13:28Hammer & Firing Pin System
  12. 15:07Production History & Transition to M1A1

Frequently Asked Questions

What were the main simplifications made to the M1 Thompson compared to the M1928A1?

The M1 Thompson removed the Blish lock, replaced the vertical foregrip with a horizontal one, eliminated barrel cooling fins, and simplified the rear sight to a fixed aperture. These changes drastically reduced manufacturing complexity and cost for wartime production.

Who manufactured the simplified M1 Thompson submachine gun?

While Auto-Ordnance was the primary contractor, Savage Arms was responsible for developing and manufacturing the simplified M1 Thompson. Savage's contribution was crucial in increasing production volume during World War II.

What type of action does the M1 Thompson use?

The M1 Thompson operates on a simple blowback action. This was a significant departure from earlier models that used the more complex Blish lock system, making the M1 easier and cheaper to manufacture.

What magazines were used with the M1 Thompson?

The M1 Thompson primarily used 20-round and 30-round stick magazines. The design eliminated the side slots for drum magazines, favoring the more reliable and cost-effective stick magazines for military use.

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