Here is the relevant code:
SEC. 97-37-15. Parent or guardian not to permit minor son to have or carry weapon; penalty.
Any parent, guardian or custodian who shall knowingly suffer or permit any child under the age of eighteen (18) years to have or to own, or to carry concealed, in whole or in part, any weapon the carrying of which concealed is prohibited, shall be guilty of a misdemeanor, and, on conviction,shall be fined not more than One Thousand Dollars ($1,000.00), and shall be imprisoned not more than six (6) months in the county jail. The provisions of this section shall not apply to a minor who is exempt from the provisions of Section 97-37-14.