Importation of Arms, Ammunition and Implements of War and Machine Guns, Destructive Devices, and Certain Other Firearms; Extending the Term of Import Permits (2010R–26P). The effective date of this final rule is April 8, 2014. - This rule amends the regulations of the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) to extend the standard term of import permits for firearms, ammunition, and defense articles from 1 year to 2 years. The additional time will allow importers sufficient time to complete the importation of the authorized commodity. In addition, it will eliminate the need for the importer to submit a new import application, ATF Form 6, where the importation was not completed within the 1-year period.