Anvil 058: Johnson Automatic Rifle

Published on January 29, 2021
Duration: 48:50

This guide details advanced gunsmithing techniques for the M1941 Johnson Automatic Rifle, presented by Master Gunsmith Mark Novak. It covers comprehensive disassembly, common repair issues like stock damage and magazine tube thread repair using specialized methods such as Cerrosafe casting, and reassembly of critical components. Novak's expertise shines through in his explanations of the rifle's unique short-recoil system, rotary magazine, and safety features, offering invaluable insights for collectors and restorers of this historical firearm.

Quick Summary

Master Gunsmith Mark Novak demonstrates advanced gunsmithing for the M1941 Johnson Automatic Rifle, detailing stock repair with Acraglas, magazine tube disassembly using Cerrosafe, and the rifle's unique short-recoil action and rotary magazine.

Chapters

  1. 00:00Introduction & Historical Context
  2. 00:47Initial Assessment & Repair Issues
  3. 01:54Stock Repair & Reinforcement
  4. 03:48Magazine Tube Disassembly
  5. 06:43Barrel System & Recoil Operation
  6. 08:48Receiver Design & Manufacturing
  7. 10:34Sights & Ejector Mechanics
  8. 12:02Rotary Magazine Mechanics
  9. 18:10Fire Control Group & Safety
  10. 21:42Butt Tube & Mainspring Assembly
  11. 23:45Bolt Carrier & Final Assembly
  12. 28:11Live Fire Testing

Frequently Asked Questions

What are the key repair challenges for the M1941 Johnson Automatic Rifle?

Common repair challenges include damage to the wooden stock, often requiring reinforcement with techniques like pillar sleeves and Acraglas, and issues with the magazine tube threads, which can be addressed using specialized methods like Cerrosafe casting for safe removal.

How does the M1941 Johnson Automatic Rifle's action work?

The M1941 Johnson features a short-recoil, semi-automatic action where the barrel and bolt move rearward together briefly before unlocking, similar in principle to a 1911 pistol but scaled for a rifle cartridge.

What is unique about the M1941 Johnson's magazine?

It utilizes a 10-round internal rotary magazine, a distinctive design that stores ammunition in a circular configuration around a central axis, differing from more common box or tubular magazines.

What safety features are notable on the M1941 Johnson?

A unique safety feature is that when the safety is engaged, the hammer cannot be cocked, and the bolt is locked shut, providing a secure state of readiness.

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