South Carolina Code §16-23-10 defines a handgun as a firearm intended to be fired from the hand and designed to expel a projectile. Antique weapons, collectible items, or any gun that does not fire fixed cartridges is excluded from the definition.
S.C. Code §16-23-20 prohibits carrying a handgun, whether concealed or in the open. Numerous exceptions apply to this prohibition, however, and a local attorney may be able to demonstrate that someone charged with a violation fits one of the exemptions.