The M1 Garand's Mysterious 7th Round Stoppage
The M1 Garand's notorious 7th round stoppage was a production flaw stemming from a cut made during barrel hole drilling at Springfield Armory, which inadvertently altered a guide rib. This issue, documented by Julian Hatcher, caused intermittent jams specifically when the top round was loaded on the right side of the en-bloc clip. The fix involved repairing existing rifles and adjusting tooling, highlighting the critical impact of undocumented manufacturing changes on firearm performance.









