The WW2 Double-Magazine MP40/I

Published on May 6, 2025
Duration: 1:12

This guide details the operational procedure for the rare WW2 MP40/I submachine gun prototype, as demonstrated by Ian McCollum. It explains how to switch between its dual 32-round magazines using a unique sliding block mechanism to increase sustained fire capability against Soviet PPSh-41 variants. The process involves firing the first magazine, releasing a latch, and sliding the block to engage the second magazine.

Quick Summary

The MP40/I was a rare WW2 German submachine gun prototype featuring an innovative sliding block mechanism to house dual 32-round magazines, offering 64 rounds of capacity. This design aimed to match the sustained firepower of Soviet PPSh-41 variants and was presented by Ian McCollum on Forgotten Weapons.

Chapters

  1. 00:00Introduction to MP40/I
  2. 00:07Historical Context & Capacity Needs
  3. 00:20Design Challenges
  4. 00:31Sliding Block Mechanism Explained
  5. 00:47Operational Procedure

Frequently Asked Questions

What was the purpose of the MP40/I prototype?

The MP40/I was a World War II German submachine gun prototype designed to increase magazine capacity, allowing soldiers to compete with Soviet weapons like the PPSh-41 which had larger drum magazines. It aimed to provide higher sustained firepower.

How did the MP40/I achieve higher magazine capacity?

The MP40/I featured an innovative sliding magazine block. This mechanism allowed two standard 32-round magazines to be housed side-by-side, enabling a quick switch to the second magazine after the first was depleted.

What were the main design challenges for the MP40/I?

The primary challenge was integrating two magazines with a single bolt and barrel without a complete redesign of the firearm's core architecture. The sliding block mechanism had to ensure precise alignment for reliable feeding and function.

Who presented the MP40/I prototype and on what channel?

The MP40/I prototype was presented by Ian McCollum on the popular YouTube channel Forgotten Weapons, known for its in-depth historical and technical firearm analysis.

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