The Thompson M1A1 Submachine Gun (Full Auto)

Published on July 27, 2016
Duration: 5:29

This guide covers the operational aspects of the Thompson M1A1 submachine gun, drawing from TFB TV's expert demonstration. It details the weapon's controls, sights, magazine system, and handling characteristics, including its weight and stock ergonomics. The information is presented with a high degree of authority, reflecting detailed knowledge of historical production changes and mechanical differences.

Quick Summary

The Thompson M1A1 submachine gun fires the .45 ACP round and features an open bolt, blowback action with 20 or 30-round stick magazines. Simplified for WWII mass production, it achieved 2-2.5 inch groups at 40 yards despite an awkward stock slant. Its double-stack magazine is noted for reliability over single-feed designs.

Chapters

  1. 00:00Introduction and Full Auto Demo
  2. 00:21Historical Context and Models
  3. 00:51Cost and Production
  4. 01:20Sights and Controls
  5. 02:59Magazine and Action
  6. 03:53Accuracy and Ergonomics

Frequently Asked Questions

What are the key features of the Thompson M1A1 submachine gun?

The Thompson M1A1 fires the .45 ACP round and features an open bolt, blowback action. It utilizes a 20 or 30-round stick magazine and has simplified controls including separate levers for safety and fire selection (semi/full), a thumb-actuated magazine release, and a reciprocating charging handle.

How does the Thompson M1A1 compare to earlier Thompson models?

The M1A1 is a simplified version designed for mass production during WWII. Unlike earlier models with complex sights and finned barrels, the M1A1 streamlined production to reduce costs, making it more affordable and easier to manufacture in large quantities.

What is the accuracy and handling like for the Thompson M1A1?

The M1A1, weighing 12 lbs loaded, can achieve 2-2.5 inch groups at 40 yards due to its stability. However, its aggressive stock slant can make shouldering feel awkward for some shooters, impacting handling comfort.

What caliber does the Thompson M1A1 fire and what is its magazine capacity?

The Thompson M1A1 fires the .45 ACP caliber. It is designed to accept double-stack, double-feed stick magazines with capacities of either 20 or 30 rounds, offering good reliability.

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