Perhaps requiring all candidates for office to submit their fingerprints and DNA to the national crime database would be applicable? I can hear the squeals of protest from polititicians now.

Problem is that human fingerprints and DNA do not change but the marks a firearm make alter over time and with mechanical alterations.

A criminal who uses a Glock to commit a crime can change the barrel and dump the suspect barrel in a dumpster. It goes to the landfill never to be seen again. Cops test the gun, negative ballistics test. Criminal is guilty but walks.

The obvious anti-gunner response would be to criminalize changing barrels. Criminal counter response would be to fire a few rounds of ammo coated with some abrasive. It wouldn't take much to alter the marks enough to show a jury "look, not the same gun!"

Anyone supporting widespread "fingerprinting" of firearms clearly doesn't understand the worthlessness of the system. Anyone supporting microstamping clearly doesn't understand the worthlessness of that system.

What works is locking up the bad guys and keeping them locked up. Letting them out due to overcrowding, plea bargaining and squealing on one another is really working against society.

I tend to listen to NRA News online every weeknight. Cam Edwards is the host and one of his daily features is "The Deal Of The Day" where he takes a newspaper story about a criminal who commits serious crime and gets a slap on the wrist. Very, very often the criminals profiled are not people who were strangers to the law. They were career criminals with multiple convictions. They work the system, plea bargain and are back to commit more serious crime after only a short stint in prison. These aren't accusations. These are convictions. God only knows what these guys did that wasn't proven in court.