Instructions
Contact the Bureau of Tobacco and Firearms and request an application for the permit. You should receive it in a few weeks. Alternatively you can go to their website to download and print a PDF copy of Application for Tax Paid Transfer and Registration of a Firearm (form 5320.4).
Fill out the application and submit it. Along with the permit application, you must submit a copy of your fingerprints and two passport-type photos. They will conduct a criminal background check.
Send the $200 fee upon receiving your approval. This fee is required for each weapon that you buy, meaning if you are buying two, you will pay $400.
Keep the permit with the weapon at all times, whether in storage or in transit. You must also keep it stored in a securely locked safe. The Bureau has the right to inspect this storage at any time.