D.C. Mun. Regs. tit. 24, r. 24-2345
A non-resident of the District, as defined by the Act, may apply to the Firearms Registration Section for a concealed carry license upon a showing that the applicant meets all of the eligibility requirements of § 2332.
A non-resident may satisfy some or all of the firearms training requirements in § 2336 by providing proof of completion of a firearms training course in another state or subdivision of the United States.
A non-resident shall obtain a certification from a firearms trainer that the applicant has received and completed training in District firearms law and the District law of self-defense.
A non-resident must demonstrate to the Chief that he or she has a good reason to fear injury to his or her person or property, as defined by the Act and these regulations, by showing that the fear is from a cause that will likely be present in the District and is not a cause that is likely to be present only in another jurisdiction.
A non-resident must demonstrate to the Chief that he or she has any other proper reason for carrying a pistol, as defined by the Act and these regulations, by showing that the other proper reason exists in the District.
D.C. Mun. Regs. tit. 24, r. 24-2345