Master gunnery sergeant

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Master Gunnery Sergeant
Master Gunnery Sergeant insignia
Country	United States
Service branch	United States Marine Corps
Abbreviation	MGySgt
NATO rank code	OR-9
Pay grade	E-9
Formation	1958
Next higher rank	Equivalent to sergeant major
Next lower rank	Master sergeant

Master gunnery sergeant (MGySgt) is the 9th and highest enlisted grade in the United States Marine Corps. Master gunnery sergeants are senior staff non-commissioned officers (SNCOs) with the pay grade of E-9, equivalent to sergeants major and the Sergeant Major of the Marine Corps (though the latter is a single unique billet in the Corps, and is senior to all enlisted ranks).