District of Columbia Code Division IV. Criminal Law and Procedure and Prisoners. § 22-4504.01. Authority to carry firearm in certain places and for certain purposes.

(1) Within the registrant's home;

(2) While it is being used for lawful recreational purposes;

(3) While it is kept at the registrant's place of business; or

(4) While it is being transported for a lawful purpose as expressly authorized by District or federal statute and in accordance with the requirements of that statute.