Erma EMP36: External Form Factor of the MP40

Published on March 26, 2025
Duration: 20:55

The Erma EMP36 is a rare precursor to the MP38/MP40, showcasing early design elements like an underfolding stock and muzzle hook. Its complex bolt assembly and telescopic mainspring highlight its prototype nature, with many features later simplified for mass production. Only two examples are known to exist, making it a critical piece of firearms history.

Quick Summary

The Erma EMP36 is a rare submachine gun prototype and a direct precursor to the MP38 and MP40. It features key design elements like an underfolding stock and muzzle hook, but possesses a complex bolt assembly and telescopic mainspring that were later simplified for mass production.

Chapters

  1. 00:00Introduction to the Erma EMP36
  2. 00:45Historical Context and Design Origins
  3. 01:55External Design Features
  4. 03:20Complex Bolt Assembly
  5. 06:19Telescopic Mainspring
  6. 08:21Trigger and Fire Control
  7. 11:13Barrel Assembly Complexity
  8. 14:52Stock Operation and Markings
  9. 16:40Muzzle Hook and Vehicle Ports
  10. 19:25Rarity and Provenance

Frequently Asked Questions

What is the Erma EMP36 and its significance?

The Erma EMP36 is an extremely rare submachine gun prototype, considered a direct precursor to the iconic German MP38 and MP40. Its design incorporated key features that would define the later mass-produced models, making it a critical piece of firearms history.

What external design features of the EMP36 influenced the MP38/MP40?

The EMP36 introduced crucial elements like its distinctive underfolding stock, pistol grip, near-vertical magazine well, and a muzzle hook designed for vehicle use. These features established the foundational external form factor for the MP38 and MP40.

How complex was the bolt assembly of the Erma EMP36?

The EMP36 featured a remarkably complex bolt assembly for a submachine gun. It included a detachable bolt face secured by a screw, a spring-loaded firing pin, and an extractor, with even small internal parts serialized, reflecting German engineering precision.

What is the rarity of the Erma EMP36?

The Erma EMP36 is exceptionally rare, with only two known examples in existence. Production was estimated at around 20 units for field testing by the Wehrmacht, making any surviving example a significant historical artifact.

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