http://scstatehouse.gov/code/t16c023.php
SECTION 16-23-30. Sale or delivery of handgun to and possession by certain persons unlawful; stolen handguns.
(A) It is unlawful for a person to knowingly sell, offer to sell, deliver, lease, rent, barter, exchange, or transport for sale into this State any handgun to:
(3) a person under the age of eighteen, but this shall not apply to the issue of handguns to members of the Armed Forces of the United States, active or reserve, National Guard, State Militia, or R. O. T. C., when on duty or training or the temporary loan of handguns for instructions under the immediate supervision of a parent or adult instructor; or
(B) It is unlawful for a person enumerated in subsection (A) to possess or acquire handguns within this State.
SECTION 16-23-20. Unlawful carrying of handgun; exceptions.
It is unlawful for anyone to carry about the person any handgun, whether concealed or not, except as follows, unless otherwise specifically prohibited by law:
(8) a person in his home or upon his real property or a person who has the permission of the owner or the person in legal possession or the person in legal control of the home or real property;
(9) a person in a vehicle if the handgun is:
(a) secured in a closed glove compartment, closed console, closed trunk, or in a closed container secured by an integral fastener and transported in the luggage compartment of the vehicle; however, this item is not violated if the glove compartment, console, or trunk is opened in the presence of a law enforcement officer for the sole purpose of retrieving a driver’s license, registration, or proof of insurance. If the person has been issued a concealed weapon permit pursuant to Article 4, Chapter 31, Title 23, then the person also may secure his weapon under a seat in a vehicle, or in any open or closed storage compartment within the vehicle’s passenger compartment; or
(b) concealed on or about his person, and he has a valid concealed weapons permit pursuant to the provisions of Article 4, Chapter 31, Title 23;
(12) a person who is granted a permit under provision of law by the State Law Enforcement Division to carry a handgun about his person, under conditions set forth in the permit, and while transferring the handgun between the permittee’s person and a location specified in item (9);
(15) a person while transferring a handgun directly from or to a vehicle and a location specified in this section where one may legally possess the handgun.
South Carolina State Law on Minimum Age for a CWP
http://scstatehouse.gov/code/t23c031.php
SECTION 23-31-215. Issuance of permits.
(A) Notwithstanding any other provision of law, except subject to subsection (B), SLED must issue a permit, which is no larger than three and one-half inches by three inches in size, to carry a concealable weapon to a resident or qualified nonresident who is at least twenty-one years of age and who is not prohibited by state law from possessing the weapon upon submission of: