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Friday, 9 October 2026
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California Mandates Firearm-Blocking Technology in 3D Printers

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Written with artificial intelligence.

California Mandates Firearm-Blocking Technology in 3D Printers

California has become the second U.S. state to require firearm-blocking technology in 3D printers sold within its borders, following New York's lead. However, the law's implementation hinges on the establishment of technical standards by ASTM International, which are not yet in place.

New Legislation Overview

California Governor Gavin Newsom has signed a law mandating that 3D printers sold in the state must include firearm-blocking technology. This makes California the second state to implement such a requirement, following New York.

Key Provisions and Conditions

The law will not take effect until ASTM International publishes or adopts a relevant technical standard, which is currently non-existent. The California Department of Justice (DOJ) is tasked with checking quarterly for the issuance of this standard, with the first review due by July 1, 2027. If a standard is not established by July 1, 2029, the DOJ's obligation to monitor will cease, leaving the law on the books but unenforceable without compliance guidelines.

California Mandates Firearm-Blocking Technology in 3D Printers
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Scope of the Law

This legislation specifically regulates the sale and transfer of 3D printers, rather than their ownership or use. Existing printers without the blocking technology are exempt from this requirement, allowing current owners to continue using their devices without any legal implications.

Broader Context and Challenges

California's approach aligns with similar legislation in Colorado and Washington, where bills requiring firearm-blocking features are under consideration. However, enforcement may be complicated due to the nature of many 3D printers, which are often based on open-source designs and modifiable firmware. The success of this law will depend on the development of a feasible technical standard and its implementation by the DOJ following the required checks.

Business3d printingFirearm regulationsCalifornia lawTechnology standardsPublic safety
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