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Questions and Answers

Fireworks

Federal regulations at 27 CFR § 555.109 require that you mark all explosive materials imported for sale or distribution. You need not mark those materials imported for your own use. However, the fact that the structure of your operations makes it difficult to distinguish materials imported for sale from those imported for your own use may make it practical for you to mark all of the imported display fireworks. Bear in mind that any materials to be sold or distributed must be marked within 15 days after release from U.S. Customs custody. Therefore, those materials not marked within 15 days may not be later marked and sold or otherwise distributed.

If there are no net weights listed on the product by the manufacturer, ATF generally uses 50% of the net weight (per case) for display shells and 25% of the net weight (per case) for display cakes and candles. ATF also uses ½ pound (low explosives) per 2,000 igniters.

There are no marking requirements for fireworks manufactured for personal, non-business use. Fireworks imported or manufactured for use by the importer or manufacturer need not be marked if they will not be offered for sale or distribution. However, any subsequent distribution of display fireworks without the proper markings required by 27 CFR § 555.109 would be a violation of Federal explosives laws. Import markings are required to be placed on display fireworks for sale or distribution within 15 days following their release from U.S. Customs custody. Federal explosives licensees and permittees must maintain a record of manufacture if the fireworks do not enter into commerce.

General

No, a license is not required to make a firearm solely for personal use. However, a license is required to manufacture firearms for sale or distribution. The law prohibits a person from assembling a non–sporting semiautomatic rifle or shotgun from 10 or more imported parts, as well as firearms that cannot be detected by metal detectors or x–ray machines. In addition, the making of an NFA firearm requires a tax payment and advance approval by ATF.

[18 U.S.C. 922(o), (p) and (r); 26 U.S.C. 5822; 27 CFR 478.39, 479.62 and 479.105]

Yes. A license is required to import or manufacture ammunition. However, a license is not required to deal only in ammunition. Ammunition includes cartridge cases, primers, bullets or propellant powder designed for use in any firearm other than an antique firearm.

[18 U.S.C. 921(a)(17), 922(a)(1)(B) and 923(a); 27 CFR 478.11]

Yes. The Gun Control Act (GCA), administered by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) of the Department of Justice, contains federal licensing standards for various firearms businesses (manufacturers, importers and dealers). An example of these standards is that the applicant must have a business premises. [18 U.S.C. 923(d), 27 CFR 478.47]

No, except that frames or receivers of firearms are "firearms" as defined in the law and are subject to the same controls as complete firearms. Certain parts of silencers and machineguns are also regulated as firearms under the GCA, as well as under the National Firearms Act (NFA).

[18 U.S.C. 921(a)(3), (23) and (24); 26 U.S.C. 5845; 27 CFR 478.11 and 479.11]

No. Neither ATF nor any other federal agency issues a permit or license to carry a concealed weapon. Carrying permits may be issued by a state or local government. Please contact your state’s Attorney General’s Office for information regarding permits to carry firearms.

Yes, a person who —

(1) Has been convicted in any court of a crime punishable by imprisonment for a term exceeding 1 year;

(2) Is a fugitive from justice;

(3) Is an unlawful user of or addicted to any controlled substance;

(4) Has been adjudicated as a mental defective or has been committed to a mental institution;

(5) Is an alien illegally or unlawfully in the United States or an alien admitted to the United States under a nonimmigrant visa;

(6) Has been discharged from the Armed Forces under dishonorable conditions;

(7) Having been a citizen of the United States, has renounced his or her citizenship;

(8) Is subject to a court order that restrains the person from harassing, stalking, or threatening an intimate partner or child of such intimate partner issued after a hearing

at which notice was given to the person and at which the person had an opportunity to participate, and includes a finding that the person subject to the order represents a credible threat to the intimate partner or child or the intimate partner OR explicitly prohibits the use, attempted use, or threatened use of force against the partner; or

(9) Has been convicted of a misdemeanor crime of domestic violence cannot lawfully receive, possess, ship, or transport a firearm or ammunition,is prohibited from shipping, transporting, possessing, or receiving firearms and ammunition.

A person who is under indictment or information for a crime punishable by imprisonment for a term exceeding 1 year cannot lawfully ship, transport, or receive a firearm or ammunition. Such persons may continue to lawfully possess firearms and ammunition obtained prior to the indictment or information, but cannot do so once the conviction becomes final.

[18 U.S.C. 922(g) and (n); 27 CFR 478.32]

A person who is prohibited from possessing, shipping, transporting, or receiving firearms or ammunition may make application to the Attorney General for relief from the firearms disability. The Attorney General may grant such relief if it is established to the Attorney General’s satisfaction that the circumstances regarding the disability, and the applicant’s record and reputation, are such that the applicant will not be likely to act in a manner dangerous to public safety and that the granting of relief would not be contrary to the public interest. See 18 U.S.C. § 925(c).

On March 20, 2025, the Department of Justice issued an interim final rule. As a result, ATF no longer has authority to process applications for relief from firearms disabilities. See https://www.federalregister.gov/documents/2025/03/20/2025-04872/withdrawing-the-attorney-generals-delegation-of-authority. For those interested in pursuing relief under Section 925(c), please note the Interim Final Rule’s statement that “the Department anticipates future actions, including rulemaking consistent with applicable law, to give full effect to 18 U.S.C. 925(c) while simultaneously ensuring that violent or dangerous individuals remain disabled from lawfully acquiring firearms.” 90 Fed. Reg. at 13,083.

Persons convicted of a disabling offense may seek to have their firearms rights restored by means other than a federal relief from firearms disabilities pursuant to 18 U.S.C. § 925(c). Other means of restoring firearms rights include:

A person convicted of a federal offense may apply for a presidential pardon. 28 CFR Part I specifies the rules governing petitions for obtaining presidential pardons. You may contact the Pardon Attorney’s Office at the U.S. Department of Justice to inquire about the procedures for obtaining a presidential pardon.

A person convicted of a state offense may contact the State Attorney General’s Office in the state of their conviction for information concerning the availability of expungements, set asides, pardons and civil rights restoration.

Any pardon, expungement, set aside, or restoration of civil rights must completely remove the effects of a prior conviction, including any restrictions on the shipment, transportation, receipt, and possession of firearms, for firearms rights under federal law to be restored.

No, assuming the antique firearm is not a replica designed or redesigned for using rimfire or conventional centerfire fixed ammunition. The antique firearm also cannot be a black powder muzzle loading weapon that incorporates a firearm frame or receiver, have been converted into a muzzle loading weapon, or uses fixed ammunition (or readily converted to do so).

[18 U.S.C. 921(a)(3) and (16); 27 CFR 478.11 and 478.141(d)]

Because black powder firearms are considered antique firearms, the possession of a black powder firearm by a person subject to federal firearms disabilities is not prohibited by the GCA. However, a person subject to federal firearms disabilities may not receive and/or possess black powder firearms that can be readily converted to fire fixed ammunition by replacing the barrel, bolt, breechblock, or any combination thereof which are classified as "firearms." Additionally, state law may prohibit the possession of a black powder firearm by persons who are not federally prohibited from possessing them. Please contact your state's Attorney General’s Office for information regarding black powder firearms.

[18 U.S.C. 921(a)(3) and (16); 27 CFR 478.11 and 478.141(d)]

General Questions - Explosives

Until the compounds are mixed, they are not classified as explosives and, therefore, are not subject to control. However, once mixed, binary explosives are "explosive materials" and are subject to all applicable federal requirements.

A person who mixes or combines compounds of binary explosives for the purpose of sale or distribution or for the person’s own business use is a "manufacturer" of explosive materials and must be licensed as a manufacturer under the law.

[18 U.S.C. 841(h); 27 CFR 555.11: definition of "manufacturer"]

A UN (United Nations) number is used by the Department of Transportation (DOT) as a method of identification and classification of products for shipping purposes.

UN numbers are different from the hazard class or division designations used by DOT (for example, 1.1, 1.2, 1.3, 1.4, and 1.5). ATF regulations in 27 CFR Part 555 also use UN numbers to help identify certain explosives.

[27 CFR 555.11]

An EX number, preceded by the prefix "EX–", is issued and used by the Department of Transportation (DOT) to identify an explosive which has been tested and classified by DOT. See U.S. Department of Transportation regulations at 49 CFR 171.8 and 49 CFR 173.56.

Shock tube contains highly explosive material. However, it may be stored as a low explosive when not attached to a detonator.

[27 CFR 555.202(b), 555.213]

No. However, airport terminals and jetways (enclosed or open walkways on or above the tarmac) are considered inhabited buildings for table of distance requirements.

The term "highway" is defined in 27 CFR 555.11 as "any public street, public alley, or public road, including a privately financed, constructed, or maintained road that is regularly and openly traveled by the general public."

Privately financed, constructed or maintained roads that are not regularly or openly traveled by the general public do not fall within the meaning of the term and would, therefore, be exempt from table of distance requirements. See ATF Ruling 2005–2 for more information.

[27 CFR 555.11: definition of "highway"]

Yes. Federal explosives law prohibits any person from distributing explosive materials to persons under 21 years of age. However, it does not prohibit the delivery to or possession of explosive materials by persons under the age of 21 who are receiving or using the materials on behalf of their employers to whom the materials were lawfully sold.

[18 U.S.C. 842(d), (i); 27 CFR 555.11 (definition of "distribute"), 555.26, 555.106(b)(1)]

The Explosives List, also known as the Annual List of Explosive Materials, is a comprehensive (but not all-inclusive) listing of explosive materials which have been determined to be within the coverage of Chapter 40. The list is published annually by ATF in the Federal Register.

[18 U.S.C. 841(d); 27 CFR 555.23]

Generally, any person who has knowledge of the theft or loss of any explosive materials from his/her stock must report such theft or loss within 24 hours of discovery to ATF and to appropriate local authorities.

This theft/loss reporting requirement in the federal explosives laws at 18 U.S.C. § 844(p) and 27 CFR 555.30 refers to explosive materials when the owner, authorized possessor or operator has unintentionally lost possession, care, or control of the explosives materials and cannot account for their absence, even if there is reason to believe that the theft or loss occurred prior to receipt of an explosive materials shipment (e.g., during transportation or packing at the manufacturer’s premises).

Any licensee or permittee who has knowledge of the theft or loss of any explosive materials from his or her stock shall, within 24 hours of discovery, report the theft or loss by telephoning our toll-free number 800-461-8841 during business hours (Monday-Friday, 8 a.m.-5 p.m. Eastern Time) or our nationwide toll-free hotline 888-283-2662 (after hours and weekends) and then submitting ATF Form 5400.5, "Report of Theft or Loss—Explosive Materials", in accordance with the instructions on the form. The theft or loss shall also be reported to appropriate local authorities.

The same requirements are imposed upon persons other than licensees and permittees, except that non-licensees and non-permittees, other than carriers, need not report a theft or loss on Form 5400.5, but must report the theft or loss by telephone, using the same numbers listed above, and in writing to the nearest ATF office. The theft or loss shall also be reported to appropriate local authorities.

Carriers of explosive materials who have knowledge of the theft or loss of any explosive materials must report such theft or loss within 24 hours of discovery to ATF and to appropriate local authorities. Carriers need not make the report on the ATF form or in writing.

See 27 CFR 555.30 for the specific information required to be reported in connection with a theft or loss.

[18 U.S.C. 842(k), 18 U.S.C. 844(p); 27 CFR 555.30]

Except for limited permit holders, any ATF officer may, without a warrant, enter during business hours the premises, including places of storage, of any licensee or permittee for the purpose of inspecting or examining any records or documents required to be kept by the law and regulations and any explosive materials kept or stored at the premises. For inspection purposes, "business hours" includes hours during which business is actually conducted, not just those hours stated on license or permit applications.

Any licensee or permittee who refuses to permit the inspection or examination is subject to having his or her license or permit revoked, as well as to denial of an application to renew the license or permit.

For limited permit holders, an ATF officer may inspect the places of storage for explosive materials of either an applicant for a limited permit or at the time of renewal of such permit, but in no event shall such inspection occur more than once every three years.

[18 U.S.C. 843(b)(4), 18 U.S.C. 843(f)]

ATF is authorized to inspect the site of any accident or fire where there is reason to believe that explosive materials were involved. Other federal agencies, or state or local agencies, may also investigate such incidents, depending on the circumstances.

[18 U.S.C. 846(a); 27 CFR 555.31]

This should be considered a theft or loss of explosive materials. You must report the theft or loss of explosive materials, within 24 hours of discovery, to ATF by telephone. Call our toll-free number 800-461-8841 during business hours, Monday to Friday from 8 a.m. to 5 p.m. Eastern Time. On weekends or outside business hours, call our hotline at 888-283-2662 (800-ATF-BOMB).

ATF Form 5400.5, "Report of Theft or Loss—Explosive Materials", must then be completed and forwarded in accordance with the instructions on the form.

[18 U.S.C. 842(k); 27 CFR 555.30]

Última Actualización: Enero 21, 2026

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