From the Coalition to Stop Gun Violence:
What is microstamping?
Microstamping is a new technology that would allow police to positively link used cartridge cases recovered at crime scenes to the firearms and criminals that fired them.
How does it work?
The basic technology of microstamping involves the use of powerful lasers to make extremely precise, microscopic engravings on the firing pin or inside the firing chamber of a gun. Police at a crime scene can immediately read the microscopic serial numbers on the shell casings and link the evidence to the specific gun that fired the round. Manufacturers would decide what the identifying marks look like and where they're placed, making it harder for criminals to tamper with the firearm
The proponants of it claim that the cost per firearm would be between $0.50 and $8.00. The cost to enter the data into a state database, aroung $30 per firearm. I didn't find any info on how much it would cost to ensure that all those state databases were compatible and accessable on a national level, but I'm betting it would be at LEAST as much as the $30 a firearm to enter the info.
So the PROPONANTS claim it will only amount to between a $30 and $70 increase to the price of every handgun sold.
The arguements against it are legion. Here are some:
- proposals currently being pushed would ban sale of handguns (at least semi autos) without this technology.
- There is no data to prove that it would be able to be used to help solve crimes.
- There is data to show that registrations of guns is not effective in catching criminals, so why would having the serial number of the gun used in a crime help?
- The part that produced the microstamp on the casing would either have to be the firing pin, or a portion of the chamber that the case expanded against, yet didn't rub against hard enough during extraction to smear the marks. Firing pins are easy for crimnals to make (making the gun untracable). Chamber markings are much harger to make unremovable.