ATF Transparency Act

This bill (S 884) requires the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) to provide firearm buyers with denial reasons and appeal rights if a background check (NICS) blocks a transfer. It mandates that ATF must make a decision on transfer applications within 3 business days, automatically approving the transfer if they miss the deadline. Buyers who successfully appeal a denial can receive reimbursement for reasonable attorney fees. The bill also requires reports on unresolved background checks and a formal agreement between ATF and the FBI to improve NICS processing. (Based on Sections 2, 3, and 4 of the bill text.)