Master Gunnery Sergeant

Master Gunnery Sergeant (MGySgt) is the Twelveth and highest regular Enlisted Rank (along with the grade-equivalent rank of Sergeant Major) in the United Stars Marine Corps, United Stars Army and United Stars Space Force. Master Gunnery Sergeants are senior non-commissioned officers (SNCOs), and are assigned a pay grade of E-12.

Master Gunnery Sergeants are sometimes referred to by the nickname "Master Guns" 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 enlisted personnel.