California Introduces New Regulations on Handgun Sales
Author: Marko L. | Publish Date: Oct 15, 2025 | Fact checked by: Aleksa Miladinovic
Governor Newsom Signs Legislation Addressing Firearm Conversion Devices
Governor Gavin Newsom has approved new firearms legislation in California, marking another step in the state's approach to gun regulation. The law focuses on handguns that could potentially be modified with automatic conversion devices.

Understanding Assembly Bill 1127
Key Provisions
Assembly Bill 1127, introduced by Assembly members Jesse Gabriel and Catherine Stefani, establishes new requirements for handgun sales in California. The legislation prohibits state-licensed firearms dealers from selling pistols that are compatible with automatic conversion devices, commonly known as "Glock switches."
Current Federal Framework
It's important to note that these conversion devices are already prohibited under federal law. The Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) classifies automatic conversion devices as machine guns under the National Firearms Act (NFA).
Federal Penalties Include:
- Up to 10 years of imprisonment
- Fines reaching $250,000
- These penalties apply to unauthorized possession or use
Perspectives on the Legislation
Support from Advocacy Organizations
Several gun safety organizations have expressed support for the new measure:
Gun safety advocacy groups including Everytown for Gun Safety, Moms Demand Action, and Students Demand Action have welcomed the legislation. John Feinblatt, president of Everytown for Gun Safety, stated that the law "encourages the firearms industry to implement preventive measures."
Leadership from Moms Demand Action described the legislation as prioritizing public safety and addressing concerns about firearm modifications.
Questions from Second Amendment Advocates
Some firearms rights organizations and legal gun owners have raised questions about the legislation's approach. They point out that the conversion devices themselves are already illegal under federal statute, with substantial penalties in place for violations.
Critics of the measure suggest that the focus could be directed toward enforcement of existing federal laws rather than adding state-level restrictions on legally manufactured and sold handguns that pass through the standard background check system.
The Broader Context
What Are Conversion Devices?
Automatic conversion devices are small mechanisms that can modify a semi-automatic pistol's firing mechanism. These devices have been federally prohibited and classified as machine guns regardless of whether they're attached to a firearm.
Implementation Details
The new California law targets the point of sale, requiring firearms dealers to verify that handgun models they stock cannot accept these illegal modification devices. This adds an additional layer of state regulation to the existing federal framework.
What This Means for California
This legislation represents California's continued development of state-level firearms regulations that go beyond federal requirements. The law affects licensed firearms dealers and manufacturers who sell products in the California market.
The measure joins California's existing framework of gun laws, which already includes various restrictions and requirements for firearm purchases, ownership, and use within the state.
Both supporters and critics agree that illegal automatic conversion devices pose serious concerns, though they differ on the most effective regulatory approach to address the issue while balancing public safety considerations with Second Amendment protections.
Author:
Marko Lalovic

Marko is a dedicated aviation enthusiast whose passion began with an unforgettable encounter with fighter jets at an air show in his home country. As an audiophile and sound engineer by training, Marko was initially captivated by the distinctive sonic signature of military aircraft—the thunderous roar of afterburners and the precise mechanical symphony of aviation systems. This auditory fascination evolved into a comprehensive interest in defense technology, particularly firearms engineering and ballistics acoustics.