U.S. Marine Corps Dictionary

Quad 50s

An anti-aircraft weapon employed by the Army. The Geneva Convention limits anti-personnel weapons to 30 caliber, so these four 50 caliber rifles could only be used on aircraft and other equipment. R-i-i-ght! (origin) Vietnam

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DevilDogCorps.com is an unofficial online dictionary of terms and acronyms commonly used within the United States Marine Corps.