Do what's the big deal with "ghost guns?"
Can't anyone with a $5.00 file and five minutes make a ghost gun by removing the serial number from a gun that has one?
Yes and No. They can now take a gun that has had the ser. number ground off and do a metallurgical scan on the area and it will recreate the serial number by looking at the change in the molecular structure of the metal compared to the area right around the number.
So wouldn't filing and then over stamping numerous numbers/patterns obliterate the underlying structure? As in using a center punch and then peening the surface back, repeat, repeat, etc.
