Britain's Experimental Viper No.3 SMG/PDW

Published on February 15, 2021
Duration: 8:18

The Viper No.3 is a unique, one-of-a-kind British experimental submachine gun designed for one-handed use, potentially for post-WWII occupation forces. Despite mechanical similarities to the Sten, it uniquely utilizes MP40 magazines and features a removable stock and a push-through fire selector. The design incorporated salvaged parts, indicated by an unused gas port on the barrel, and never entered production.

Quick Summary

The Viper No.3 is a unique British experimental submachine gun designed for one-handed use, potentially for post-WWII occupation forces. It uniquely utilizes German MP40 magazines and features a removable stock, but never entered production.

Chapters

  1. 00:00Introduction to the Viper No.3 SMG
  2. 00:31Historical Context: Post-WWII British PDW
  3. 01:46Mechanical Design: Sten vs. MP40 Mags
  4. 03:03Controls: Selector Switch & Sights
  5. 04:12Ergonomics: Stock & Sling Carry
  6. 05:43Disassembly & Salvaged Parts
  7. 06:51Conclusion: One-of-a-Kind Prototype

Frequently Asked Questions

What is the Viper No.3 SMG?

The Viper No.3 is a rare, one-of-a-kind British experimental submachine gun developed after World War II. It was designed for one-handed use and uniquely utilized MP40 magazines, despite being a British design.

Why did the Viper No.3 use MP40 magazines?

The use of German MP40 magazines in the British Viper No.3 SMG was unusual. This choice might have been due to parts availability, standardization efforts for occupied territories, or specific design requirements for the weapon's intended role.

What was the intended purpose of the Viper No.3?

The Viper No.3 was intended for British military police operating in occupied West Germany after WWII. Its design focused on one-handed operation, suitable for engaging fleeing suspects, and it was considered a Personal Defense Weapon (PDW).

Was the Viper No.3 ever mass-produced?

No, the Viper No.3 was a unique prototype and never entered mass production. It represents an experimental design from the Royal Small Arms Factory Enfield that did not proceed beyond the prototype stage.

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