California lawmakers seek to force gunmakers to 'microstamp' bullet casings, US gun control

Advocates seek enforcement of 2007 measure that would link casings to the guns that fired them

California's Ban on Guns in Most Public Places Is Blocked Again - The New York Times

Does microstamping of firearms really help law enforcement solve crimes? - Quora

Microstamping Law Now Requires Stamp on Pistol Parts - USA Carry

California city declares itself a gun 'sanctuary' in rebuke to liberal laws, California

IMPORTANT INFORMATION FOR HANDGUN MANUFACTURERS PURSUING THE CALIFORNIA MARKET - CRPA

Calls for Stricter Gun Laws Worry Ilion, N.Y., Built by Remington - The New York Times

California city declares itself a gun 'sanctuary' in rebuke to liberal laws, California

New York enacts microstamping gun law in push to change how firearms are made

Firearms Industry Challenges California Micro-Stamping Law « Daily Bulletin

CA Bill aims To Jumpstart 'Microstamps' On Handguns

One state (CA) requires guns built after a certain year to include microstamping which does not exist in a real way and may never exist. What level of impact would microstamping have on traceability and is this state requirement constitutional? - Quora