§ 555.55 Change in class of explosive materials.
A licensee or permittee who intends to change the class of explosive materials described in his license or permit from a lower to a higher classification (see § 555.202) shall file an application on ATF F 5400.13 or on ATF F 5400.16 with the Chief, Firearms and Explosives Licensing Center, for an amended license or permit. If the change in class of explosive materials would require a change in magazines, the amended application must include a description of the type of construction as prescribed in this part. Business or operations with respect to the new class of explosive materials may not be commenced before issuance of the amended license or amended permit. Upon receipt of the amended license or amended permit, the licensee or permittee shall submit his superseded license or superseded permit and any copies furnished with the license or permit to the Chief, Firearms and Explosives Licensing Center.