The German WWII Standby: The MP38 and MP40 SMGs

Published on August 4, 2017
Duration: 15:31

This video details the key differences between the German MP38 and MP40 submachine guns, often confused but with distinct manufacturing evolutions. The MP38 featured an expensive milled receiver, while the MP40 transitioned to a stamped sheet metal design for mass production. Specific features like the MP38's vehicle hook and the MP40's safety redesign are highlighted, along with internal mechanics like the telescoping recoil spring.

Quick Summary

The main difference between the German MP38 and MP40 submachine guns lies in their manufacturing. The MP38 used a costly milled receiver, while the MP40 adopted a stamped sheet metal tube for simplified, cheaper mass production during WWII.

Chapters

  1. 00:00Introduction: MP38 & MP40 Overview
  2. 00:28Design Lineage & Magazine Issues
  3. 02:04Manufacturing: Milled (MP38) vs. Stamped (MP40)
  4. 04:06MP38 Specific Feature: Vehicle Hook
  5. 07:26MP40 Simplification & Updates
  6. 09:12Disassembly & Recoil System
  7. 11:17Safety Redesign in MP40

Frequently Asked Questions

What is the main manufacturing difference between the MP38 and MP40?

The primary manufacturing difference is that the MP38 features an expensive milled receiver made from bar stock, while the MP40 transitioned to a stamped sheet metal tube, significantly simplifying and cheapening production for wartime needs.

Did the MP38 have any unique features for specific troops?

Yes, the MP38 included a unique hook under the barrel, often called a 'resting bar' or vehicle hook. This was designed for mechanized troops to secure the weapon over the side of vehicles like half-tracks, preventing accidental recoil into the cabin.

What was a common design weakness in the MP38 and MP40 magazines?

A notable design carryover and weak point in both the MP38 and MP40 is the double-stack, single-feed magazine. This design experiences higher friction compared to double-feed designs, potentially affecting reliability.

How did the MP40 improve safety over earlier models?

Early MP40 models had a simple hook charging handle that could accidentally discharge if caught. In 1942, a two-piece push-pull safety bolt handle was introduced to lock the bolt in the forward position, preventing unintentional firing.

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