Weapons of choice for criminals, for terrorists, for domestic abusers because they are unserialized. they have no number on which to trace them back to the seller, and therefore, the owner. why this action that we're taking today is so important is that it will require that there be serial numbers on these so-called kits, homemade kits that people can purchase online with the parts and the directions to make a ghost gun at home in under 30 minutes. these are very, very dangerous weapons, and they are increasingly showing up on our streets as the weapon of choice for criminals of all varieties....