The MP-40: History’s Most Infamous SMG

Published on May 24, 2022
Duration: 11:48

This guide details the field stripping process for the MP-40 submachine gun, as demonstrated by Brandon Herrera. It covers the basic steps for disassembly and reassembly, emphasizing the open-bolt mechanism and the use of period-correct materials like Bakelite. The video highlights the importance of understanding historical firearm engineering.

Quick Summary

The MP-40 is an iconic WWII submachine gun operating on an open-bolt, blowback system and chambered in 9mm Luger. Constructed from stamped steel and Bakelite, it features a distinctive, albeit wobbly, under-folding stock and dual safety mechanisms. Understanding its historical engineering and operation is key for enthusiasts.

Chapters

  1. 00:00Introduction to the MP-40
  2. 02:16Gun Overview and History
  3. 03:59Technical Operation: Open Bolt System
  4. 04:58Caliber and Magazines
  5. 05:18External Features: Stock and Bakelite
  6. 06:03Controls and Safety
  7. 07:30Disassembly and Internals
  8. 09:02Threaded Muzzle and Final Thoughts

Frequently Asked Questions

What is the operating system of the MP-40 submachine gun?

The MP-40 operates using an open-bolt, blowback system. In this design, the bolt remains in the rearward position until the trigger is pulled, at which point it moves forward to chamber a round and fire.

What caliber is the MP-40 chambered in?

The MP-40 is chambered in 9mm Luger. This was the standard pistol cartridge for German forces during World War II and was also used in other sidearms like the Luger P08 and Walther P38.

What materials are notable on the MP-40?

The MP-40 is known for its construction from stamped steel for durability and weight reduction. Its lower receiver and handguard often feature Bakelite, an early type of plastic, contributing to its distinctive appearance.

How does the MP-40's folding stock function?

The MP-40 is equipped with an under-folding metal stock. While functional for compactness, it is often noted for being somewhat wobbly, which can impact shooting stability compared to more rigid stock designs.

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