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Update: As of 8/31/2023, Sig Sauer has released a California-compliant version of this handgun:

In recent years, the Sig Sauer P320 has gained popularity among gun enthusiasts due to its modular design and ease of customization. However, California residents might find obtaining one to be a hurdle. The legality surrounding the P320 in California can be traced back to the state’s stringent gun laws, designed to enhance public safety. This article delves into the core reasons why the Sig Sauer P320 finds itself on the list of prohibited firearms in California.

Stringent Roster of Handguns

California maintains a “Roster of Handguns Certified for Sale,” which lists the firearms approved for sale within the state. The Sig Sauer P320 does not feature on this roster, primarily due to its failure to meet certain safety requirements set by the California Department of Justice. The roster is part of California’s initiative to ensure that handguns sold in the state are safe and less likely to cause accidental discharges. Learn more about California’s Roster of Handguns.

Microstamping Requirement

One of the critical criteria for a handgun to be listed on California’s roster is the microstamping requirement. This technology imprints a unique code on each cartridge case when fired, aiding law enforcement in tracing firearms in criminal investigations. The Sig Sauer P320 does not comply with this microstamping requirement, which significantly contributes to its prohibition in California. Explore the microstamping law.

Absence of Chamber Load Indicator and Magazine Disconnect Mechanism

California law mandates that all new models of semi-automatic handguns have a chamber load indicator and a magazine disconnect mechanism. The Sig Sauer P320 lacks these features, which are designed to prevent accidental discharges and promote safer handling of firearms. Read about California’s handgun safety requirements.

Lawsuits and Controversies

Additionally, the Sig Sauer P320 has been embroiled in several lawsuits concerning accidental discharges, further tarnishing its reputation in California. The negative publicity surrounding these incidents may also contribute to its exclusion from the approved roster. Dive into the lawsuits surrounding Sig Sauer P320.


California’s strict gun laws aim to ensure the safety and welfare of its residents. The prohibition of the Sig Sauer P320 in the Golden State underscores the lengths to which California will go to maintain a high standard of firearm safety. Although these laws may disappoint gun enthusiasts, they reflect California’s ongoing commitment to reducing gun-related incidents and promoting public safety.