40 mike-mike

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English[edit]

Introduction of an unfamiliar soldier with the Mk19.jpg

Etymology[edit]

From Mike (the letter M in the ICAO spelling alphabet).

Noun[edit]

40 mike-mike

  1. (US Army and Marines, military, slang) Any weapon firing a 40mm grenade. Often specifically the M203 grenade launcher, mounted underneath an M-16 or variant. In the Marine Corps, often the Mark-19 Automatic 40mm Grenade Launcher.