27 C.F.R. § 555.212 Smoking and open flames.
Title 27 - Alcohol, Tobacco Products and Firearms
Smoking, matches, open flames, and spark producing devices are not permitted: (a) In any magazine; (b) Within 50 feet of any outdoor magazine; or (c) Within any room containing an indoor magazine.
Title 27: Alcohol, Tobacco and Firearms
PART 555—COMMERCE IN EXPLOSIVES
Subpart K—Storage
§ 555.212 Smoking and open flames.