Prototype Jungle Carbine: A No1 MkV Becomes a No5 MkI

Published on February 17, 2021
Duration: 3:50

This review details a rare No1 MkV prototype converted into an early No5 MkI 'Jungle Carbine' configuration. Key features include its receiver-mounted aperture sight, a modified front end with a flash hider and bayonet lug, and a unique hollowed bolt handle for weight reduction. The prototype's development in 1943 aimed for a lighter service rifle, but ultimately, the No4 rifle was chosen as the basis for mass production due to existing manufacturing infrastructure.

Quick Summary

The No1 MkV prototype, converted into an early No5 MkI Jungle Carbine, featured a receiver-mounted aperture sight and a modified front end with a flash hider. A unique hollowed bolt handle was tested for weight savings, but the prototype wasn't mass-produced as the No4 rifle was already in production and better suited for adaptation.

Chapters

  1. 00:00Introduction: No1 MkV to No5 MkI Prototype
  2. 01:04Receiver Markings & Historical Context
  3. 01:25Rear Aperture Sight Details
  4. 01:52Front End & Muzzle Features
  5. 02:16Butt Plate & Bolt Handle Mods
  6. 02:53Why This Prototype Wasn't Produced

Frequently Asked Questions

What distinguished the No1 MkV rifle from earlier Lee-Enfield models?

The No1 MkV rifle, developed in the 1920s, primarily distinguished itself by moving the rear sight from the barrel to the receiver bridge, incorporating an aperture sight for improved accuracy. This prototype was a conversion of such a rifle.

What were the key modifications made to create the prototype Jungle Carbine?

The prototype featured a shortened barrel, a metal-wrapped nose cap, a conical flash hider with a bayonet lug, and a rubber-padded butt plate. A unique feature was its hollowed-out bolt handle for weight reduction.

Why was the No1 MkV prototype not chosen for mass production as the Jungle Carbine?

By 1943, the British military already had the No4 rifle in production, which also featured receiver-mounted aperture sights. It was more efficient to adapt the No4 for the carbine role than to base it on the older No1 MkV trials rifle.

What is the significance of the 'SHLE V' marking on the receiver?

The 'SHLE V' marking on the receiver indicates 'Short Lee Enfield Mark V'. While often referred to as the No1 Mk5, this official designation wasn't adopted until 1926; in 1922, it was still designated as the Short Lee Enfield Mark V.

Related News

All News →

More Reviews Videos You Might Like

More from Forgotten Weapons

View all →