Though not required for temporary interstate movement of suppressors, if you are crossing state lines with an SBR, SBS, Destructive Device or Machinegun, or permanently moving a suppressor to a new state, an approved ATF Form 20 (5320.20) is required. As of today, the Form 20 is now available to be completed through the eForms system, rather than submitting it on paper. Applicants will need to have the control number of the original approved transfer form (Form 1 or Form 4) to validate that they are the legal possessor of the item when submitting via eForms.
