Master Gunnery Sergeant (MGySgt) is the ninth and highest enlisted rank (along with the grade-equivalent ranks of
Sergeant Major and
Sergeant Major of the Marine Corps) in the U.S. Marine Corps. Master Gunnery Sergeants are staff non-commissioned officers (SNCOs), and are assigned a pay grade of E-9.
Master Gunnery Sergeants are sometimes referred to by the nickname "Master Gunns" or "Master Gunny." These nicknames are unacceptable in formal or ceremonial situations, and, at the rank holder's discretion, may also be unacceptable for use by lower-ranking Marines.
