California's 3D-printer gun-blocking law waits for proof the technology works
Sept. 26, 2026 — A law Gov. Gavin Newsom signed Saturday in Sacramento will require 3D printers sold in California to block attempts to print guns, but only after the technology is shown to work. Under AB 2047, the state Justice Department must first find that ASTM International, a standards body, has published a standard showing such blocking is feasible; the department then has two years to set rules. Everytown for Gun Safety said the law sets a standard other states and the printing industry should take seriously. Critics, including a 3D-printing marketplace executive, told lawmakers the requirement raises technical, privacy and cost problems; opponents also argued that scanning every print job could lay groundwork for restricting other designs. The bill's author cited a similar New York law.
The wall: Whether any ASTM standard exists or is under way was not found.
Tier: Confirmed (Confirmed (Law text passage on ASTM trigger read; opposition via committee analyses and regional coverage))
Sources
- AB 2047 bill text (leginfo)
- Assembly committee analysis
- Governor's follow-up release (Everytown statement)
- San Joaquin Valley Sun
Related coverage
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- California creates an office for its gun-violence grants, funded by a tax on gun sales Oct 1
- California adds a 10-year gun ban for a misdemeanor serial-number offense Oct 1
- California adds a four-hour gun course and targets 3D-printed guns Oct 1
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