The misinformation with title 2 firearms never ceases to amaze me.
It is only a short barreled shotgun when it has a short barrel. Put an 18 on it and it is not a short barreled shotgun. Take it anywhere a shotgun is legal, even sell it with the 18 if you like. NFA would like to know it’s been “converted” back to a title 1, but that isn’t even necessary. Unlike machine guns and NFA’s “once a machine gun always a machine gun” position, an SBS or SBR is only a title 2 when configured as a title 2.
You do not give up any rights. .gov can’t come into your home anytime they wish. Still America folks, probable cause and a warrant is necessary to enter your home.