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.

Rules and Regulations Library

Rules Regulations Library

Document Type Title and Description Category
Open Letter 2012 - April - National - Unmarked Plastic Explosives [PDF - 115.98 KB]

The purpose of this letter is to remind all federal law enforcement agencies and military components of certain provisions of the Antiterrorism and Effective Death Penalty Act of 1996 pertaining to plastic explosives that do not contain a detection agent.

Published/Revised:

Explosives
Open Letter 2005 - All FFLs - Lawful Importation of Certain Firearm Barrels Into the United States for Commercial Purposes [PDF - 34.31 KB]

The purpose of this open letter is to update licensed and registered importers of firearms, ammunition and other regulated commodities on the lawful importation of certain firearm barrels into the United States for commercial purposes.

Published/Revised:

Firearms
Open Letter 2005 - December - Indiana - Procedures for Indiana FFLs Using the Revised ATF Form 4473 [PDF - 53.58 KB]

The purpose of this letter is to clarify that the revised ATF Form 4473, Firearms Transaction Record Part I - Over The Counter, has no effect on the procedures Indiana Federal Firearms Licensees must follow in order to comply with the Brady Law. The procedures enumerated in the September 2003 Open Letter to All Indiana Firearms Licensees are still in effect.

Published/Revised:

Firearms
Open Letter 2005 - December - Pennsylvania - Private Transfers of Firearms and Using NICS or the Pennsylvania Instant Check System (PICS) [PDF - 36.62 KB]

ATF has received questions from firearms dealers in Pennsylvania concerning the use of the National Instant Criminal Background Check System (NICS)/Pennsylvania Instant Check System (PICS) to do background checks of people who are acquiring firearms from other nonlicensees in what are commonly called “private transfers.”

Published/Revised:

Firearms
Open Letter 1998 - October - New York - Permanent Provisions of the Brady Law [PDF - 1.92 MB]

This open letter has been rescinded. The purpose of this letter is to advise you of your responsibilities under the permanent provisions of the Brady law. 

Published/Revised:

Firearms
Open Letter 1999 - July - Colorado - Correction Notice - State of Colorado Point of Contact for Background Checks [PDF - 1.9 MB]

This open letter has been rescinded. The Colorado Department of Public Safety recently notified ATF that the State of Colorado will again act as the point of contact for NICS checks for all firearms transactions. Therefore, beginning Aug. 1, 1999, in order to request a NICS check for any firearm transaction, you must contact the Colorado Bureau of Investigation.

Published/Revised:

Firearms
Open Letter 2012 - September - All FELs - Table of Distance Requirements [PDF - 115.1 KB]

The purpose of this open letter is to provide information regarding ATF revisiting its guidelines for the application of the tables of distances for the storage of certain explosive materials.

Published/Revised:

Explosives
Open Letter 2011 - December - All FFLs - Future Amendment of Nonimmigrant Alien Provisions [PDF - 66.96 KB]

The purpose of this open letter is to inform all federal firearms licensees that ATF is in the process of amending its regulations and forms related to nonimmigrant alien provisions of the Gun Control Act.

Published/Revised:

Firearms
Open Letter 2011 - December - All FFLs - State of Residence [PDF - 70.01 KB]

The purpose of this open letter is to inform all federal firearms licensees that ATF will be revising the regulations in 27 C.F.R. Part 478 to conform to the Department of Justice's conclusions by removing the separate 90-day residency requirement for aliens.

Published/Revised:

Firearms
Open Letter 2011 - November - All FELs - Clarify the Definition of "Display Fireworks" in the Federal Explosives Regulations [PDF - 71.11 KB]

The purpose of this letter is to clarify the definition of "display fireworks" in the federal explosives regulations. 

Published/Revised:

Explosives
Open Letter 2011 - September - All FFLs - Marijuana for Medicinal Purposes [PDF - 56.61 KB]

The purpose of this open letter is to provide guidance on the issue of marijuana for medicinal purposes and its applicability to federal firearms laws.

Published/Revised:

Firearms
Open Letter 2011 - March - All FELs - Exemption of Tribal Display Materials [PDF - 69.28 KB]

This open letter is to all federally recognized Indian tribes and explosives licensees and permittees and provides guidance regarding the Tribal Law and Order Act of 2010. The law created an exemption for federally recognized Indian tribes or tribal agencies from provisions of the Federal explosives laws with respect to display fireworks.

Published/Revised:

Explosives
Open Letter 2000 - April - North Dakota - Correction Notice - Qualifying Permit Alternatives to NICS Check [PDF - 1.91 MB]

This open letter has been rescinded. The provisions of North Dakota law regarding the issuance of concealed weapons permits were recently amended.  Based on these changes, concealed weapons permits issued on or after Dec. 1, 1999, will now qualify as alternatives to a NICS check at the time of transfer.

Published/Revised:

Firearms
Open Letter 1999 - September - South Carolina - Notice of Amendment - South Carolina Ceases Operations as NICS Point of Contact [PDF - 97.26 KB]

The South Carolina Law Enforcement Division has now notified ATF and the Federal Bureau of Investigation (FBI) that they will cease operations as the NICS point of contact on Sept. 30, 1999.  Therefore, beginning Oct. 1, 1999, in order to initiate a NICS check for any firearm, South Carolina licensees must contact the FBI's NICS Operations Center

Published/Revised:

Firearms
Open Letter 2009 - July - All FFLs - Selling or Delivering Firearms Frames or Receivers [PDF - 103.66 KB]

The purpose of the this open letter is to provide guidance on certain regulatory requirements and definitions under the Gun Control Act of 1968 (GCA) about selling or delivering firearm frames or receivers.

Published/Revised:

Firearms
Open Letter 2009 - July - Tennessee - Passage of the Tennessee Firearms Freedom Act [PDF - 73.33 KB]

The purpose of this open letter is to provide guidance on your obligations as a federal firearms licensee (FFL) with respect to the passage of the Tennessee Firearms Freedom Act that took effect on June 19, 2009. 

Published/Revised:

Firearms
Open Letter 2009 - July - All FELs - Ammonium Perchlorate Composite Propellant [PDF - 61.39 KB]

The purpose of this letter is to provide Federal explosives licensees and permittees with information about the recent district court decision regarding ammonium perchlorate composite propellant (APCP). 

Published/Revised:

Explosives
Open Letter 2007 - June - All FFLs - Post Office Boxes or Rural Route Numbers as Residence Address [PDF - 295.3 KB]

The purpose of this open letter is to provide guidance regarding firearms transferees whose only identification documents indicate only Post Office Box or Rural Route number as a residence address.

Published/Revised:

Firearms
Open Letter 2006 - May - New York - New York's License to Carry and Possess Handguns No Longer Qualifies as Alternative to NICS Check [PDF - 90.79 KB]

The purpose of this letter is to advise New York Federal firearms licensees that the New York license to carry and possess handguns  no longer qualifies as an alternative to the National Instant Criminal Background Check System (NICS) check. 

Published/Revised:

Firearms
Open Letter 2006 - July - Tribal Law Enforcement - Misdemeanor Crime of Domestic Violence [PDF - 374.84 KB]

This letter is to provide information to tribal law enforcement departments regarding the Omnibus Consolidation Appropriations Act of 1997.  This Act made it unlawful for any person convicted of a misdemeanor crime of domestic violence (MCDV) to ship, transport, possess, or receive firearms or ammunitions.

Published/Revised:

Firearms
Open Letter 2007 - June - Kentucky - Amendment to What Was Formerly Known as Kentucky's Contiguous State Law [PDF - 249.97 KB]

The purpose of this open letter is to advise that the recent amendment to what was formerly known as Kentucky's contiguous state law has no effect on federal firearms laws and regulations.

Published/Revised:

Firearms
Open Letter 2005 - July - All FFLs - Department of State Rescinded Sanctions on Trade in Defense Articles and Services From South Africa [PDF - 70.81 KB]

The purpose of this open letter is to inform licensed firearms importers and registered importers of U.S. Munitions Import List Articles that the United States Department of State has rescinded the sanctions on trade in defense articles and services from South Africa.

Published/Revised:

Firearms
Open Letter 2008 - January - National - Submitting Payments to ATF [PDF - 87.04 KB]

The purpose of this letter is to provide notification that the ATF will be switching to electronic funds processing (ECP) for all payments received by the agency.

Published/Revised:

Workforce and Mission
Open Letter 2005 - July - All FFLs - Importation of U.S. Manufactured Surplus Military Firearms Classified as Curios or Relics [PDF - 100.63 KB]

This Open Letter is to advise all Federal Firearms Licensees and registered importers of U.S. munitions import list articles that ATF was advised by the Department of State, on a case-by-case basis, permit the retransfer of U.S. manufacturing military firearms that were sold or granted by the United States Government classified by ATF as curios or relics.

Published/Revised:

Firearms
Open Letter 2004 - December - All FFLs - Establishment of the National Instant Criminal Background Check System Voluntary Appeal File [PDF - 14.87 KB]

The purpose of this letter is to inform Federal firearms licensees that the Federal Bureau of Investigation's (FBI) National Instant Criminal Background Check System's (NICS) Voluntary Appeal File (VAF) has been established.

Published/Revised:

Firearms

ATF.gov

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

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