Japan's Interim Handgun: The "Papa" Nambu

Published on April 1, 2020
Duration: 11:19

This guide details the field stripping process for the Papa Nambu pistol, an interim Japanese handgun. It highlights key differences from the Grandpa Nambu and emphasizes a unique disassembly method involving barrel depression and trigger guard manipulation. The guide strongly warns against dry-firing due to the fragile firing pin. Instruction is provided by Ian McCollum of Forgotten Weapons, known for his deep historical and mechanical expertise.

Quick Summary

The Papa Nambu, an interim Japanese handgun, was developed as an improvement over the Grandpa Nambu. Chambered in 8mm Nambu (8x22mm), it featured a locked-breech, short-recoil action. Production by the Tokyo Artillery Arsenal and TG&E ran from 1906-1928, totaling around 10,000 units. Disassembly requires careful handling of its fragile firing pin.

Chapters

  1. 00:00Introduction to Nambu Variants
  2. 01:28Development History
  3. 02:08Markings and Caliber
  4. 03:48Grandpa vs. Papa Comparison
  5. 05:13Mechanical Operation
  6. 05:45Disassembly and Internal Components
  7. 09:21Production and Adoption

Frequently Asked Questions

What is the Papa Nambu pistol?

The Papa Nambu, officially the Nambu Automatic Pistol Modified Type A, was an interim handgun developed in Japan between 1904-1906. It served as an improvement over the earlier Grandpa Nambu and was produced until the adoption of the Type 14 Nambu.

What caliber is the Papa Nambu?

The Papa Nambu is chambered in 8mm Nambu, also known as 8x22mm Nambu. This caliber was standard for several Nambu pistol designs.

How do you field strip the Papa Nambu?

Field stripping involves ensuring the pistol is unloaded, depressing the barrel, and sliding the trigger guard down. Extreme caution is advised with the firing pin assembly due to its fragility.

Who manufactured the Papa Nambu?

The Papa Nambu was produced by the Tokyo Artillery Arsenal and Tokyo Gas & Electric (TG&E) from approximately 1906 to 1928, with an estimated production run of 10,000 units.

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