Japanese Pedersen Rifle

Published on April 18, 2015
Duration: 11:54

This guide details the field stripping process for the rare Japanese Pedersen Rifle, as demonstrated by Ian McCollum on Forgotten Weapons. It highlights the unique disassembly method involving a spring catch and a single cross-pin to remove the complex toggle-lock assembly. The process is noted as being significantly easier than on the British Vickers version.

Quick Summary

The Japanese Pedersen Rifle, a rare adaptation of John Pedersen's design, features a complex delayed blowback toggle-lock action and a unique rotary magazine. It was developed in Japan between 1932-1935 and is noted for its easier field stripping compared to the British Vickers version, though it faced reliability challenges.

Chapters

  1. 00:00Introduction: Japanese Pedersen Rifle
  2. 00:31Pedersen Rifle History & US Trials
  3. 01:36Japanese Development & Reliability Issues
  4. 02:58Visual Comparison: Japanese vs. British Pedersen
  5. 04:02Action and Safety Features
  6. 05:12Disassembly Process Explained
  7. 06:49Internal Mechanics: Toggle-Lock Action
  8. 08:18External Features & Arisaka Elements
  9. 09:46Sights and Adjustments
  10. 11:10Conclusion & Rarity

Frequently Asked Questions

What makes the Japanese Pedersen Rifle unique?

The Japanese Pedersen Rifle is unique for its adaptation of John Pedersen's design by Japan, featuring a delayed blowback toggle-lock action, a rotary magazine (unlike the original's en-bloc clips), and a simpler field stripping process compared to its British counterpart.

How does the Japanese Pedersen Rifle's action work?

It utilizes a delayed blowback system with a toggle-lock mechanism. Precisely machined surfaces on the toggle linkage delay the bolt's rearward movement after firing, allowing internal pressures to safely decrease before the breech fully opens.

What are the key differences between the Japanese and British Vickers Pedersen rifles?

The Japanese version uses a rotary magazine and has a simpler disassembly via a single cross-pin. The British Vickers model employed en-bloc clips and had a more complex disassembly procedure, making the Japanese variant easier to field strip.

Why did the Japanese Pedersen rifle have reliability issues?

Reliability problems were likely caused by the delayed blowback action's sensitivity to cartridge lubrication. The requirement for waxed cartridges suggests the system needed specific conditions to function optimally, which may not have been consistently met.

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