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Eighteen States, Law Enforcement, Doctors, and Firearm Rights Groups File Amicus Briefs in Lawsuit Challenging California 10+ Magazine Ban

Tuesday, January 16, 2018

Eighteen States, Law Enforcement, Doctors, and Firearm Rights Groups File Amicus Briefs in Lawsuit Challenging California 10+ Magazine Ban

On Friday, January 12, several amicus briefs were filed in the NRA and CRPA supported lawsuit challenging California’s restrictions against magazines capable of holding more than 10 rounds. The lawsuit, titled Duncan v. Becerra, challenges California’s recently enacted ban on the possession of magazines capable of holding more than 10 rounds as a result of Proposition 63, as well as all of California’s other restrictions on such magazines. The lawsuit challenges the restrictions as a violation of the Second Amendment, Due Process clause, and Takings clause of the United States Constitution. 

Less than three days before California’s ban on the mere possession of magazines capable of holding more than 10 rounds was scheduled to take effect, San Diego Federal District Court Judge Roger T. Benitez issued an order granting NRA and CRPA attorney’s request for an injunction while the lawsuit is pending. As a result, California gun owners who currently possess such magazines may continue to do so without fear of prosecution while the constitutionality of the law is decided in the courts. Unsurprisingly, the California Department of Justice has appealed the injunction to the Ninth Circuit. 

In support of the plaintiffs are 18 States, including Arizona, Alabama, Arkansas, Georgia, Idaho, Kansas, Louisiana, Michigan, Missouri, Montana, North Dakota, Ohio, Oklahoma, South Carolina, South Dakota, Utah, West Virginia, Wyoming, filed an amicus brief illustrating how the Second Amendment protects magazines capable of holding more than 10 rounds and how California’s restrictions constitute a “taking” which requires just compensation to affected owners. 

Several Law Enforcement and State and Local Firearm Rights groups also filed an amicus brief highlighting how California’s restrictions will not reduce violent crime, but instead will increase the danger to victims. The brief also states how magazines capable of holding more than 10 rounds are not disproportionately used in attacks on law enforcement, and that California has failed to show that its restrictions will reduce mass shootings and injuries. The listed groups participating as an amicus include:

 

California State Sheriffs Association

Western States Sheriffs Association

California Reserve Peace Officers Association

San Francisco Veteran Police Officers Association

California Gang Investigators Association

International Law Enforcement Educators and Trainers Association

Law Enforcement Legal Defense Fund

Law Enforcement Action Network

Law Enforcement Alliance of America

International Association of Law Enforcement Firearms Instructors

Association of New Jersey Rifle & Pistol Clubs

Bridgeville Rifle & Pistol Club

Connecticut Citizens Defense League

Delaware State Sportsmen’s Association

Gun Owners Action League Massachusetts

Gun Owners of California

Hawaii Rifle Association

Illinois State Rifle Association

Missourians for Personal Safety

New York State Rile & Pistol Association

Vermont Federation of Sportsmen’s Clubs

Vermont State Rifle & Pistol Association

Virginia Shooting Sports Association

Western Missouri Shooters Alliance 

Doctors for Responsible Gun Ownership, the Independence Institute, Millennial Policy Center, and the National Rifle Association Freedom Action Foundation also filed amicus briefs, each detailing how magazines capable of holding more than 10 rounds are in common use and therefore protected under the Second Amendment. 

To stay up to date on the Duncan lawsuit, as well as other important Second Amendment issues here in California be sure to check your inbox as well as the Stand and Fight California webpage.

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Virginia: More Gun Control Introduced in General Assembly

Thursday, January 15, 2026

Virginia: More Gun Control Introduced in General Assembly

The 2026 Virginia legislative session is underway, and lawmakers are continuing their assault on your Second Amendment rights.

DOJ Determines 1927 Prohibition on Mailing Handguns Violates Second Amendment

News  

Monday, January 19, 2026

DOJ Determines 1927 Prohibition on Mailing Handguns Violates Second Amendment

In a monumental development for gun owners, the Department of Justice has acknowledged that one of the oldest federal gun control laws on the books is unconstitutional.

Virginia: More Gun Control Bills Filed Including Semi-Auto Ban and Tax on Suppressors!

Thursday, January 8, 2026

Virginia: More Gun Control Bills Filed Including Semi-Auto Ban and Tax on Suppressors!

Anti-gun legislators in Richmond have been busy ahead of the 2026 legislative session working on ways to burden your Second Amendment rights.

Virginia: Multiple Gun Control Bills Up in Committee on Monday

Friday, January 23, 2026

Virginia: Multiple Gun Control Bills Up in Committee on Monday

On Monday, January 26th, the Senate Courts of Justice committee will hold a hearing on over a dozen gun control bills, including semi-automatic bans and concealed carry prohibitions. The hearing will begin at 8am.

North Carolina: Permitless Carry Veto Override Vote Postponed

Tuesday, January 13, 2026

North Carolina: Permitless Carry Veto Override Vote Postponed

Today, the North Carolina House of Representatives rescheduled this morning’s veto override on Senate Bill 50, Freedom to Carry NC, to February 9, 2026.

Virginia: Gun Bills in Committee This Thursday

Tuesday, January 20, 2026

Virginia: Gun Bills in Committee This Thursday

On Thursday, January 23rd, the House Public Safety Subcommittee – Firearms will hold a hearing on several pro-gun measures.

North Carolina: Update on Permitless Carry

Tuesday, December 16, 2025

North Carolina: Update on Permitless Carry

In September, the North Carolina General Assembly briefly returned from recess and re-referred Senate Bill 50, Freedom to Carry NC, to the House Rules Committee.

Washington: Senate Passes Gun-Free Zone Expansion Bill

Wednesday, January 21, 2026

Washington: Senate Passes Gun-Free Zone Expansion Bill

Yesterday, January 21st, the Senate held the final vote on Senate Bill 5098, a carry-over bill from the 2025 session that effectively turns the entire state of Washington into a "gun-free" zone. 

Australia’s Wretched Bargain, Trading Liberty for Safety and Having Neither

News  

Monday, January 19, 2026

Australia’s Wretched Bargain, Trading Liberty for Safety and Having Neither

Last week, Australian Prime Minister Anthony Albanese announced that the federal parliament would be recalled to debate sweeping new laws on guns and hate crimes, including the establishment of a new national gun buyback program.

Mixed Results in Massachusetts Show the Promise of and Need for Vigilant Advocacy

News  

Monday, January 19, 2026

Mixed Results in Massachusetts Show the Promise of and Need for Vigilant Advocacy

The fundamental right to travel has garnered increased attention over the past decade with the United States Supreme Court expanding and confirming that United States citizens have a protected right to travel from state to ...

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NRA ILA

Established in 1975, the Institute for Legislative Action (ILA) is the "lobbying" arm of the National Rifle Association of America. ILA is responsible for preserving the right of all law-abiding individuals in the legislative, political, and legal arenas, to purchase, possess and use firearms for legitimate purposes as guaranteed by the Second Amendment to the U.S. Constitution.