From The Federalist:

Individuals, the legislation states, do not have to be guilty for the FBI director and the Joint Terrorism Task Force to be alerted when they attempt to purchase or receive a transferred firearm. The U.S. attorney general is also notified and retains the power to stall the process for up to 10 business days and file an emergency petition to halt the gun procedure until a court can rule on it as long as the individual is notified.