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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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Out-of-Touch Mayor Learns the Hard Way Michiganders Like Guns and Dogs

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Monday, March 2, 2026

Out-of-Touch Mayor Learns the Hard Way Michiganders Like Guns and Dogs

“The NRA is going to be mad at me.”  So said David LaGrand (D), mayor of the second largest city in the state of Michigan. We don’t get mad, however, when firearm prohibitionists reveal their true ...

Gunmakers Petition High Court to Halt Illegitimate Attacks on Firearms Industry

News  

Monday, March 2, 2026

Gunmakers Petition High Court to Halt Illegitimate Attacks on Firearms Industry

In recent months, NRA-ILA has impressed upon gun owners the severe danger to Second Amendment rights posed by efforts to undermine the Protection of Lawful Commerce in Arms Act (PLCAA). 

NRA Announces Third Lawsuit Challenging the National Firearms Act

Thursday, February 26, 2026

NRA Announces Third Lawsuit Challenging the National Firearms Act

Today, the National Rifle Association announced the filing of a third lawsuit challenging the constitutionality of the National Firearms Act of 1934 (NFA). The case, Roberts v. ATF, was filed in the U.S. District Court for ...

Virginia Gun Owners Face Magazine Confiscation!

Monday, February 2, 2026

Virginia Gun Owners Face Magazine Confiscation!

Astute Virginia gun owners anticipated terrible gun control legislation from the 2026 General Assembly. Still, some may be shocked to learn that anti-rights zealots in the Virginia Senate have advanced a bill to CONFISCATE standard capacity firearm ...

Iowa: Senate Strips Carry Protections for Iowans, Expands Its Own Authority

Tuesday, February 24, 2026

Iowa: Senate Strips Carry Protections for Iowans, Expands Its Own Authority

Yesterday, on the Senate floor, SF 2263 was amended, at the last minute, to remove key provisions that would have expanded protections for law-abiding gun owners before the bill ultimately passed. Click the Take Action button ...

California: Lawmakers Introduce New Bill that Would Censor Private 3-D Printers

Tuesday, February 24, 2026

California: Lawmakers Introduce New Bill that Would Censor Private 3-D Printers

Last week marked the deadline for bill introductions in the California Legislature. As we anticipated in our previous alert, anti-gun lawmakers used this opportunity to file additional measures aimed at further restricting the rights of ...

Colorado: Gun Bill Votes In Both Chambers TODAY

Tuesday, February 24, 2026

Colorado: Gun Bill Votes In Both Chambers TODAY

Today, February 24th, both chambers of the legislature will hold votes on anti-gun legislation. Please contact your legislators and urge them to OPPOSE HB 26-1144 and SB 26-043 by using the TAKE ACTION buttons below.

Virginia: Gun Bill Updates As Crossover Deadline Arrives

Tuesday, February 17, 2026

Virginia: Gun Bill Updates As Crossover Deadline Arrives

Today, February 17th is the legislative crossover deadline in Virginia, and any bills that have not left their chamber of origin by the end of the day are considered dead for the session.

Virginia: Multiple Gun Control Bills Advance in Senate

Tuesday, January 27, 2026

Virginia: Multiple Gun Control Bills Advance in Senate

On Monday, January 26th, the Senate Courts of Justice Committee advanced a slate of gun control bills targeting semi-automatic firearms, standard capacity magazines, carry rights, home storage, and more.

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.

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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.