WASHINGTON – Today, the Bureau of Alcohol, Tobacco, Firearms and Explosives issued a public safety advisory to the firearms industry and the public regarding the application of Final Rule 2021-05F, Definition of “Frame or Receiver” and Identification of Firearms. The advisory highlights the public safety threats addressed by the final rule and makes clear that ATF will continue to prioritize investigations involving willful efforts to violate the provisions of the Gun Control Act, as implemented in the final rule, regulating the manufacture and sale of firearm frames and receivers.