Historical examples of #3 happening:
St. Cloud Man Sentenced To 21 Months In Prison For Possessing A Short-Barreled Rifle
Orlando, Florida – United States District Judge Carlos E. Mendoza has sentenced Yunis Isaac Mejia (28, St. Cloud) to 21 months in federal prison for possessing an unregistered short-barreled rifle. Mejia had pleaded guilty on January 28, 2022.
www.justice.gov
San Jose Man Pleads Guilty To Illegally Possessing A Short-Barreled Rifle And Ammunition
SAN JOSE – Mark Dehart pleaded guilty in federal court today to possessing an unregistered short-barreled rifle and to being a felon in possession of ammunition
www.justice.gov