The first sentence has the answer to AG Campbell's concerns.
“Ghost guns,” untraceable weapons of choice for gangs, must be targeted, Attorney General Andrea Campbell is urging lawmakers.
Go after the gangs. Possession of ANY firearm -- serialized, obliterated serial # or no serial # ("ghost gun") without an LTC is a FELONY under Massachusetts law.
The whole "ghost guns" thing is another scare word (like "assault rifle") for those who know nothing about guns.
I have heard AG Campbell claim she needs HD 4420 to "reduce gun violence". WRONG. She needs to enforce existing laws as her job requires.
Shakespeare said it well in Macbeth (pardon the paraphrasing): “HD 4420 is but a walking shadow; a poor player, that struts and frets his hour upon the stage, and then is heard no more: it is a tale told by an idiot, full of sound and fury, signifying nothing.”