Jay,
The Braverman Pen Pistols are not NFA or class III. They were reviewed by the Firearms Technology Branch and classified as a Title One firearm because in order to fire the gun you had to break it down ( fold in half) in order to expose the trigger to fire it. I want to warn you that there are many inspectors with ATF that don't know this, but it is definitely a title one firearm and is not regulated by the NFA.
Hope this helps.