Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Publications

ATF occasionally issues publications to inform the industries it regulates and the general public about the laws and regulations administered and enforced by ATF. These include guidebooks, newsletters, brochures, studies, and reports.

Document type Description Category
Regulatory 2002-6 - Identification of Firearms, Armor Piercing Ammunition, and Large Capacity Ammunition Feeding Devices [PDF - 75.71 KB]

In accordance with 27 CFR 178.92 and 27 CFR 179.102, identification of firearms, armor piercing ammunition, and large capacity ammunition feeding devices, the terms "conspicuously" and "legibly" as used therein mean, respectively, that the markings are wholly unobstructed from plain view and that the markings contain exclusively Roman letters and Arabic numerals.

Published/Revised:

Firearms
Regulatory 2003-1 - Importation of Browning M1919 Type Receivers for Unrestricted Commercial Sale [PDF - 212.18 KB]

An ATF-approved method of destruction for the Browning M1919 type machinegun will result in the severed portions of the receiver being importable for unrestricted commercial sale.

Published/Revised:

Firearms
Regulatory 2003-2 - Importation of FN FAL Type Receivers for Unrestricted Commercial Sale [PDF - 187.59 KB]

An ATF-approved method of destruction for the FN FAL type machinegun will result in the severed portions of the receiver being importable for unrestricted commercial sale.

Published/Revised:

Firearms
Regulatory 2003-5 - Distribution of Explosives to Limited Permittees [PDF - 49.16 KB]

Distributors distributing explosive materials via common or contract carrier to limited permittees may verify receipt of the materials by telephone, facsimile, email, or other means within three business days of shipment. ATF Form 5400.4 notation requirements.

Published/Revised:

Explosives
Regulatory 2003-4 - Importation of Sten Type Receivers for Unrestricted Commercial Sale [PDF - 193.52 KB]

An ATF-approved method of destruction for the Sten type machinegun will result in the severed portions of the receiver being importable for unrestricted commercial sale.

Published/Revised:

Firearms
Regulatory 2005-4 - Ported Device Attached to the Barrel of a Paintball Gun [PDF - 13.4 KB]

Certain integral devices intended to diminish the report of paintball guns are not “firearm silencers” or “firearm mufflers” under the Gun Control Act of 1968 or the National Firearms Act.

Published/Revised:

Firearms
Regulatory 2002-5 - Transfer and Possession Machineguns [PDF - 11.23 KB]

Applications to transfer two (2) machineguns of a particular model to a federal firearms licensee as sales samples will be approved if documentation shows necessity for demonstration to government agencies.

Published/Revised:

Firearms
Regulatory 2001-5 - Identification of Transferee [PDF - 17.92 KB]

Licensees may accept a combination of valid government-issued documents to satisfy the identification document requirements of the Brady Act under certain conditions. An active-duty member of the Armed Forces is a resident of the State in which his or her permanent duty station is located and may satisfy the identification document requirement by presenting his or her military identification card along with official orders showing the permanent duty station as within the State where the licensed premises are located.

Published/Revised:

Firearms
Regulatory 2002-3 - Indoor Storage of Explosives in a Residence or Dwelling [PDF - 10.72 KB]

ATF will approve variances to store explosives in a residence or dwelling only upon certain conditions including, but not limited to, receipt of a certification of compliance with state and local law, and documentation that local fire safety officials have received a copy of the certification.

Published/Revised:

Explosives
Regulatory 2002-4 - Indoor Storage of Explosives in Business Premises Directly Adjacent to a Residence or Dwelling [PDF - 85.16 KB]

ATF requires approval of variances for indoor storage of explosives in business premises directly adjacent to a residence or dwelling.

Published/Revised:

Explosives
Regulatory 2004-3 - Locking Requirements for Indoor Type 4 Storage Magazines [PDF - 10.82 KB]

ATF provides guidance on three different private roads and whether they are "highways" as defined in 27 CFR 555.11.

Published/Revised:

Explosives
Regulatory 2005-2 - Meaning of Term Highway [PDF - 11.39 KB]

ATF provides guidance on three different private roads and whether they are "highways" as defined in 27 CFR 555.11.

Published/Revised:

Explosives
Regulatory 2005-3 - Meaning of Term Inhabited Building [PDF - 16.1 KB]

ATF provides guidance on two situations involving structures and whether they are "inhabited buildings" as defined in 27 CFR Part 555.

Published/Revised:

Explosives
Regulatory 1998 - October - California - All FFLs - Permanent Provisions of the Brady Law [PDF - 1.85 MB]

This open letter has been rescinded. The purpose of this letter is to advise federal firearms licensees in California of their responsibilities under the permanent provisions of the Brady law.

Published/Revised:

Firearms
Regulatory 2005 - October - Alaska - All FFLs - Alaska Concealed Handgun Permits Marked "NICS Exempt" Qualify as NICS Check Alternative [PDF - 38.9 KB]

This open letter informs Alaska Federal firearms licensees that beginning Oct. 19, 2005, only Alaska Concealed Handgun Permits marked "NICS EXEMPT" will qualify as an alternative to a National Instant Criminal Background Check System (NICS) check.

Published/Revised:

Firearms
Regulatory 2004 - January - All FFLs - Importance of Partnerships Between ATF and the Firearms Industry [PDF - 94.99 KB]

This open letter discusses the importance of the partnerships that have been established between ATF and the firearms industry and to reinforce our joint responsibilities under the Gun Control Act (GCA).

Published/Revised:

Firearms
Regulatory 2001 - September - All FELs - Heightened Security Precautions Request for Explosives Licensees and Permittees [PDF - 100.03 KB]

The purpose of this letter is to advise all persons holding federal explosives licenses or permits of heightened security precautions that should be taken in light of the events of Sept. 11, 2001.

Published/Revised:

Explosives
Regulatory 1998 - October - Vermont - Permanent Provisions of the Brady Law [PDF - 637.13 KB]

The purpose of this letter is to advise federal firearms licensees in Vermont of their responsibilities under the permanent provisions of the Brady law. 

Published/Revised:

Firearms
Regulatory 2005 - October - Northern Mariana Islands - All FFLs - Northern Mariana Island Weapons Identification [PDF - 38.5 KB]

This open letter informs Northern Mariana Island Federal firearms licensees that beginning Oct. 19, 2005, Commonwealth of the Northern Mariana Island Weapons Identification Card Permits no longer qualifies as an alternative to a National Instant Criminal Background Check System (NICS) check.

Published/Revised:

Firearms
Regulatory 2002 - May - All FELs - Asks that Explosives Licensees and Permittees Remain Vigilant When Selling Explosive Materials [PDF - 101.23 KB]

The purpose of this letter is to ask that you continue to be vigilant in light of heightened security concerns regarding possible terrorist activity involving explosives.

Published/Revised:

Explosives
Regulatory Open Letter to All FFLs - August 2025 - Franklin Armory Reformation and Antithesis Firearms [PDF - 240 KB]

The purpose of this open letter is to advise all federal firearms licensees (FFLs) that the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) is rescinding a prior Open Letter, dated Dec. 19, 2019, regarding the Franklin Armory Reformation firearm (2019 Open Letter). This open letter also advises FFLs on the classification of the Franklin Armory Reformation and Antithesis firearms under federal law. 

Published/Revised:

Firearms
Regulatory 2002 - All FELs - Safe Explosives Act Provisions for Blasting/Mining Educators [PDF - 202.41 KB]

This open letter provides information for public and private institutes and the provisions pertaining to the Safe Explosives Act.

Published/Revised:

Explosives
Regulatory Open Letter to All FFLs - May 2025 - Brady Handgun Violence Prevention Act [PDF - 276.68 KB]

The purpose of this open letter is to advise all federal firearms licensees (FFLs) of updated guidance from the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) that reminds you of your obligations under the Brady Handgun Violence Prevention Act (Brady Act), 18 U.S.C. § 922(t), when transferring a firearm to a person who is not an FFL.

Published/Revised:

Firearms
Regulatory 2005 - October - Alaska - Permanent Provisions of the Brady Law [PDF - 1.86 MB]

This open letter has been rescinded. The purpose of this letter is to advise federal firearms licensees in Alaska of their responsibilities under the permanent provisions of the Brady law.

Published/Revised:

Firearms
Regulatory 2016 - January - National - Presidential Memorandum [PDF - 23.71 KB]

Tracing firearms in connection with criminal investigations and improving availability of relevant Executive Brand records to the National Instant Criminal Background Check System (NICS).

Published/Revised:

Firearms
Last Updated: January 15, 2026

ATF.gov

An official website of the U.S. Department of Justice

Looking for U.S. government information and services?
Visit USA.gov