With thanks to member CrossedCannons, Volume 5 of this excellent publication has been located and now made available for download here in its entirety from the Technical Articles for Milsurp Collectors and Re-loaders (click here).

The Machine Gun (by George M. Chinn) (click here)


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The Machine Gun. History, Evolution, and Development of Manual, Automatic, and Airborne Repeating Weapons

(Click PIC to Enlarge)

Bureau of Ordnance Department of the Navy, Washington, 1951 (Vol. I-IV)

Complete Set includes:

Volume 1 (698 pages)
History, Evolution, and Development of Manual, Automatic, and Airborne Repeating Weapons.

Volume 2 (232 Pages)
History, Evolution, and Development of Manual, Automatic, and Airborne Repeating Weapons.

Volume 3 (693 Pages)
Development During World War II and Korean Conflict by the United Statesicon and Their Allies, of Full Automatic Machine Gun Systems and High Rate of Fire Power Driven Cannon.

Volume 4 (653 Pages)
Design Analysis of Automatic Firing Mechanisms and Related Components.

Volume 5 (720 Pages)
Development of Full Automatic Machine Gun Systems High Rate of Fire Power Driven Cannon, and Automatic Grenade Launchers by the United States and Her Allies, Following World War II, Korean Police Action, and the Vietnam Conflict.
Regards,
Badger