If regulations are constitutional when applied to ordinary guns
They aren't.
why not to 'ghost guns'?
It's used as a scare tactic, and just further gun grabbing. Same as "semi-auto," "assault weapon," pistol braces, and the like. Those three examples are, respectively; most guns, stupid made up category, don't make guns more lethal or even do what gun grabbers pretend they do.
Ghost guns are the same and, as someone else pointed out, often not even guns. They're either chunks of metal or plastic, or illegal guns gangbangers have filed the serial numbers off of. And they all get lumped together, and treated like Bad Guys are making their own big scary guns in large numbers. Which might at some point be true, but the people making their own guns now are mostly hobbyists and enthusiasts.
As far as crimes go, "ghost guns" are not a thing. It's a lie, another attempt to wedge something into a chink in the armor.
They aren't.
It's used as a scare tactic, and just further gun grabbing. Same as "semi-auto," "assault weapon," pistol braces, and the like. Those three examples are, respectively; most guns, stupid made up category, don't make guns more lethal or even do what gun grabbers pretend they do.
Ghost guns are the same and, as someone else pointed out, often not even guns. They're either chunks of metal or plastic, or illegal guns gangbangers have filed the serial numbers off of. And they all get lumped together, and treated like Bad Guys are making their own big scary guns in large numbers. Which might at some point be true, but the people making their own guns now are mostly hobbyists and enthusiasts.
As far as crimes go, "ghost guns" are not a thing. It's a lie, another attempt to wedge something into a chink in the armor.