The Navy's 'comedy of errors' why converting M1s to 7 62 was a bad plan they went ahead with anyway

Published on May 9, 2026
Duration: 1:07

This video details the US Navy's ill-fated program to convert M1 Garand rifles to fire 7.62x51mm NATO. Despite warnings, the Navy proceeded, resulting in rifles with limited service use, primarily for training and competition. The conversion involved adding a chamber bushing and marking the barrels, but many original .30-06 M1s remained in service until replaced by M14s.

Quick Summary

The US Navy's conversion of M1 Garand rifles to 7.62x51mm NATO is characterized as a 'comedy of errors.' Despite warnings, the program proceeded, resulting in rifles with minimal service use, primarily for training and competition. The conversion involved adding a chamber bushing and marking the barrels, but many original .30-06 M1s remained until replaced by M14s.

Chapters

  1. 00:01Introduction: Comedy of Errors
  2. 00:03Navy's Dumb Plan
  3. 00:10Shocking Change and Limited Use
  4. 00:15Training and Competition Use
  5. 00:25Trophy Rifles
  6. 00:31Little Shipboard Use
  7. 00:33Original .30-06 M1s Remain
  8. 00:38Replacement by M14s
  9. 00:44Unnecessary Conversion
  10. 00:50Ease of Faking Conversions
  11. 00:55Mod 0 Conversion Details

Frequently Asked Questions

Why was the US Navy's M1 Garand to 7.62 NATO conversion considered a failure?

The conversion program is labeled a 'comedy of errors' because the Navy proceeded with a flawed plan despite being warned and presented with evidence against it. The resulting rifles saw minimal actual service, primarily being used for training and competition.

What was the primary use of the Navy's 7.62 converted M1 Garand rifles?

These converted M1 Garands were largely used for training and competition shooting, including match shooting. Some were also awarded as trophies for shooting competitions, rather than seeing extensive shipboard or combat deployment.

How were the M1 Garand rifles converted to fire 7.62x51mm NATO?

The conversion, specifically for the 'Mod 0' variants, involved adding a chamber bushing to existing M1 Garand rifles. The outside of the barrels were then marked with a '7.62' designation to indicate the caliber change.

Were all Navy M1 Garands converted to 7.62 NATO?

No, the majority of the M1 Garands in Navy inventory remained in their original .30-06 caliber. The converted rifles were a specific program that ultimately saw limited practical application before being superseded by the M14.

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