Rules and Regulations Library

ATF Citizens' Academy Application - The Citizens' Academy is an event for local community, religious and civic leaders, and organizations to interact and talk directly with ATF special agents and participate in hands-on activities related to ATF's areas of investigative responsibilities.

Published/Revised: July 2, 2025

The purpose of this Open Letter is to notify you of an important change to the procedure you may follow to comply with the Brady Handgun Violence Protection Act (Brady Act), codified at 18 U.S.C. § 922(t), when transferring a firearm to an unlicensed person. Specifically, the North Carolina pistol purchase permit may no longer be used as an alternative to the National Instant Criminal Background Check System (NICS) check requirement.

Published/Revised: August 24, 2023

The purpose of this open letter is to notify all persons that ATF has rescinded special explosive device exemptions for certain consumer-style grenades (e.g. flashbang grenades, smoke grenades). As a result, these explosive devices are no longer exempt from the provisions of the Federal explosives regulations at 27 CFR, Part 555 – Commerce in Explosives. 

Published/Revised: November 8, 2023

The Bureau of Alcohol, Tobacco, Firearms and Explosives (“ATF”) is issuing this open letter to assist Federal Firearms Licensees (“FFLs”) in understanding their obligations when they choose to provide firearm storage services to their customers and the public. 

Published/Revised: July 27, 2023

The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) recently examined devices commonly marketed as “solvent traps” and has determined that some of them are “firearm silencers” as defined in the Gun Control Act (GCA) and as defined in the National Firearms Act (NFA).

Published/Revised: August 16, 2024

Changes to Vermont Law, 13 Vermont Statutes Annotated (V.S.A.) § 4019, effective July 1, 2022, have generated questions from Vermont FFLs. This letter alerts Vermont FFLs to the recent changes in Vermont law and provides guidance to ensure Vermont FFLs remain in compliance.

Published/Revised: March 16, 2023

This open letter has been rescinded. The purpose of this open letter is to advise you that the Oklahoma Self Defense Act Handgun License (SDA Handgun License) issued on or after Nov. 1, 2021, meets the requirements as an alternative to the National Instant Criminal Background Check System (NICS) check — but only in Oklahoma during the five-year period beginning on the date of issuance of the SDA Handgun License.

Published/Revised: July 29, 2025

Open letter to the federal firearms licensee (FFL) community to advise on the restrictions and parameters of 18 U.S.C. § 922(o), which generally prohibits the possession or transfer of machineguns imported or manufactured after May 19, 1986, with limited exceptions.

Published/Revised: January 12, 2023

ATF Form 5320.24, Description of Firearm and Information on Request for Demonstration, should be submitted by Federal Firearms Licensees who have paid the special (occupational) tax to import, manufacture, or deal in NFA firearms, for approval to transfer an NFA firearm to a similarly qualified licensee. The completed ATF Form 5320.24 should be completed by a law enforcement agency requesting demonstration of 922(o) machineguns and will serve as supporting documentation for the ATF Form 3 (5320.3), Application for Tax-Exempt Transfer of Firearm and Registration to Special Occupational Taxpayer (National Firearms Act). 

Published/Revised: January 2, 2024

Letter to all federal firearms licensees (FFLs) in response to questions from industry members regarding the legality of firearm sales and deliveries exterior to the brick-and-mortar structure at which the firearms business is licensed, in light of the March 13, 2020, declaration of a national emergency concerning the outbreak of the novel coronavirus disease (COVID-19), and the Department of Homeland Security's subsequent classification of firearms businesses as essential.

Published/Revised: April 10, 2020

This form is used to add responsible persons to a Federal Explosives License or Permit (FEL/P) with the application as well as after a FEL/P has already been issued. It is also required to be submitted with every FEL/P Renewal Application (ATF Form 5400.14/5400.15).

Published/Revised: June 30, 2025

This procedure supersedes ATF Procedure 2017-1. The purpose of this ATF procedure is to set forth the recordkeeping and National Instant Criminal Background Check System (NICS) procedures for Federal firearms licensees (FFLs) who facilitate the transfer of firearms between private unlicensed individuals. This procedure does not apply to pawn transactions, consignment sales, or repairs.

Published/Revised: June 14, 2021

This procedure supersedes 2013-2. This ATF procedure gives guidance to licensed importers, manufacturers, and dealers (licensees) on how to complete the Firearms Transaction Record, ATF Form 4473 (Form 4473), as revised effective May 2020, and record the sale of a firearm, when selling to an unlicensed person who (a) Has a valid alternate permit or otherwise is exempt from National Instant Criminal Background Check System (NICS) requirements; (b) Resides in the same State as the licensee; and (c) Does not appear in person at the licensee's business premises.

Published/Revised: June 14, 2021

This is the form which is used by licensed manufacturers and importers requesting ATF approval to adopt markings on behalf of another manufacturer/importer during firearms manufacturing process. OMB No. 1140-0104 (10/31/2026).

Published/Revised: October 31, 2023

This form is a continuation of Section A of the attached ATF Form 4473 and is completed by the transferor/seller. When completed, this attachment is incorporated into and made part of the ATF Form 4473.

Published/Revised: October 31, 2023

Este formulario es continuación de Seccion A del Formulario 4473 de ATF y el transferidor/vendedor lo completa. Cuando esté completo, el documento será incorporado y será parte del Formulario 4473 de ATF.

Published/Revised: October 31, 2023

ATF requires that non-ATF personnel and ATF sponsors (i.e., contracting officer’s technical representative (COTR) and points of contact (POC)) complete ATF Form 8620.42 when requesting that non-ATF personnel be granted escorted access to ATF facilities, non-sensitive information, and/or construction sites in order to perform low risk, non-sensitive duties. 

Published/Revised: November 4, 2024

ATF is issuing this open letter to assist the firearms industry and the public in understanding whether a “partially complete, disassembled, or nonfunctional” frame of a Polymer80, Lone Wolf, or similar semiautomatic, striker-fired pistol (sometimes generally referred to as “Glock-type” pistols) has reached a stage of manufacture such that it “may readily be completed, assembled, restored, or otherwise converted” to a functional frame, and is therefore classified as a “frame” or “firearm” in accordance with the final rule titled Definition of ‘Frame or Receiver’ and Identification of Firearms (Final Rule 2021R-05F), which became effective Aug. 24, 2022. 

Published/Revised: December 27, 2022

ATF is committed to helping federal firearms licensees (FFLs) understand their legal obligations under federal law. This open letter advises Wisconsin FFLs that, effective immediately, the Wisconsin concealed carry license does not qualify as an alternative permit/license for purposes of 18 U.S.C. § 922(t)(3), which allows FFLs to accept certain state-issued licenses in lieu of running a background check through the National Instant Criminal Background Check System (NICS) when transferring a firearm to a nonlicensee. 

Published/Revised: July 25, 2025

Published/Revised: August 12, 2005

Published/Revised: April 29, 2005

The passage of Texas House Bill 957 (HB957), with an effective date of September 1, 2021, has generated questions from industry members as to how this state law may affect them while engaged in a firearms business activity. HB957 claims to exempt silencers (also known as suppressors) that are manufactured in Texas, and which remain in Texas, from Federal firearms laws and regulations, including the federal registration requirements. However, because HB957 directly conflicts with federal firearms laws and regulations, federal law supersedes HB957. In summary, all provisions of the Gun Control Act (GCA) and the National Firearms Act (NFA), including their corresponding regulations, continue to apply to FFLs and other persons in Texas.

Published/Revised: July 26, 2021

Colorado House Bill 1298 (HB1298) establishes a state requirement for an FFL in Colorado to obtain approval, in the form of a “proceed” response, from the Colorado Bureau of Investigation (CBI) prior to any firearm transfers. HB1298 prohibits the CBI from approving a firearm transfer until the CBI determines that its background investigation is complete and that the transfer would not violate federal prohibitions on firearms possession or result in a violation of state law. 

Published/Revised: July 26, 2021

This open letter has been rescinded. The purpose of this open letter is to advise you that the Louisiana Lifetime Concealed Handgun Permit meets the requirements as an alternative to the NICS check only during the five-year period beginning on the date of issuance of the Lifetime Permit.

Published/Revised: July 9, 2025

Missouri House Bill Number 85, Second Amendment Preservation Act (“the Act” or “SAPA”), signed into law by Governor Parson on June 12, 2021, has generated questions from industry members and firearm owners as to how this Missouri state law may affect them while engaged in a firearms business activity or seeking to acquire a firearm. Section 1.420 of the Act states that “federal acts, laws, executive orders, administrative orders, rules, and regulations” falling into five categories of regulations relating to firearms “shall be considered infringements on the people’s right to keep and bear arms, as guaranteed by Amendment II of the Constitution of the United States and Article I, Section 23 of the Constitution of Missouri.” 

Published/Revised: July 26, 2021