S.C. Code Ann. § 23-24-10
Uniformed law enforcement officers, as defined in Section 23-6-400(D)(1), and reserve police officers, as defined in Section 23-28-10(A), may wear their uniforms and use their weapons and like equipment while performing private jobs in their off duty hours with the permission of the law enforcement agency and governing body by which they are employed.
ETHICS COMMISSION OPINIONS
Police officers may utilize uniforms, weapons, and like equipment in off-duty security work in accordance with Section 23-24-10, when properly approved by law enforcement agency and governing body and when no additional public expense would be involved. Op S.C. St. Ethics Comm., SEC AO92-154, May 27, 1992.