Britain's Experimental Viper No.3 SMG/PDW

Published on February 15, 2021
Duration: 8:18

This guide details the specific under-arm sling carry method demonstrated for the experimental Viper No.3 SMG. The technique emphasizes quick deployment, a crucial feature for its intended role with British military police in occupied West Germany. The demonstration highlights how the sling allows for discreet and rapid access to the firearm.

Quick Summary

The Viper No.3 SMG was an experimental British firearm designed for post-WWII military police in West Germany, intended for one-handed use against fleeing suspects. It operates on an open bolt, blowback system and uniquely uses MP40 magazines. This one-of-a-kind prototype is housed at the Royal Armouries in Leeds and never entered production.

Chapters

  1. 00:00Introduction to Viper No.3
  2. 00:31Historical Context & Purpose
  3. 01:46Mechanical Design & Magazine Choice
  4. 03:03Controls and Sights
  5. 04:12Stock and Carry Method
  6. 05:43Disassembly and Salvaged Parts
  7. 06:51Conclusion: One-of-a-Kind Prototype

Frequently Asked Questions

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

The Viper No.3 SMG was an experimental firearm designed for British military police operating in occupied West Germany after WWII. Its primary intention was for one-handed use, specifically to engage fleeing suspects effectively and rapidly.

What makes the Viper No.3 SMG's magazine choice unusual?

Unusually for a British firearm design of that era, the Viper No.3 SMG was designed to accept German MP40 magazines. This choice deviates from standard British ordnance and suggests a pragmatic or specific design consideration.

What are the key mechanical features of the Viper No.3 SMG?

The Viper No.3 operates on an open bolt, blowback system. It features a removable stock with wooden panels, a push-through selector switch for fire modes, and a spring-loaded ejection port cover.

Where is the Viper No.3 SMG located and is it in production?

The Viper No.3 SMG is a one-of-a-kind prototype housed at the National Firearms Centre, part of the British Royal Armouries in Leeds. It never entered mass production.

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