What is the abbreviation for Mass Communications Specialist?

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In Navy practice, each enlisted rating has a short abbreviation used on uniforms, personnel records, and in communications. Mass Communications Specialist is abbreviated MC. This two-letter code is the standard shorthand that represents the rating, derived from the name itself. So, when you see MC in Navy contexts, it stands for Mass Communications Specialist. The other options correspond to entirely different ratings—Master-at-Arms, Machinist's Mate, and Legalman—so they aren’t the correct shorthand for this specialty.