A new Blog ( Gun Trust Lawyer ) dedicated to Gun Trusts and issues related to the ownership of Title II Firearms (sold by Class 3 SOT dealers) (which I started) has an article on a man who was arrested for an improper transfer of a unknown class 3 machine gun.
His gun misfired and was reclassified as a Machine Gun. This along with allowing a potential buyer to shoot it at a range resulted in the invalid transfer of a Class 3 Weapon, a crime punishable under the NFA with a sentence of up to 10 years in jail.
These are the types of transfers a NFA Gun Trust can help prevent.
The is the link to the article on Invalid Class 3 Gun Transfer