S.C. Code Ann. § 16-3-610

If a person is convicted of an offense pursuant to Section 16-3-29, 16-3-600, or manslaughter, and the offense is committed with a deadly weapon of the character as specified in Section 16-23-460 carried or concealed upon the person of the defendant, the judge shall, in addition to the punishment provided by law for such offense, sentence the person to imprisonment for the misdemeanor offense for not less than three months nor more than twelve months, or a fine of not less than two hundred dollars, or both.