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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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New York:  Gov. Kathy Hochul Signs Gun Ban in State Budget Process

Wednesday, May 27, 2026

New York: Gov. Kathy Hochul Signs Gun Ban in State Budget Process

On Wednesday, May 27, Gov. Kathy Hochul signed S.9005C, which “enacts into law major components” of the state’s public protection and general government budget.

Oregon: Initiative Petition 28 Threat to Hunting, Fishing, and Outdoor Heritage One Step Closer to Reality

Friday, May 29, 2026

Oregon: Initiative Petition 28 Threat to Hunting, Fishing, and Outdoor Heritage One Step Closer to Reality

The criminalization of hunting and fishing is one step closer to a reality in Oregon. 

NRA Files Lawsuit Challenging Maryland’s Glock Ban

Wednesday, May 27, 2026

NRA Files Lawsuit Challenging Maryland’s Glock Ban

The National Rifle Association, Firearms Policy Coalition, and Second Amendment Foundation filed a lawsuit yesterday challenging Maryland’s ban on Glock and Glock-style handguns.

Virginia: Spanberger Signs Unconstitutional Gun Bills into Law

Thursday, April 23, 2026

Virginia: Spanberger Signs Unconstitutional Gun Bills into Law

Today, April 23rd, Governor Spanberger Signed HB1525 and SB727/HB1524 into law. 

New York:  Gov. Kathy Hochul and Democrat Majorities Use The Budget to Adopt Gun Ban

Saturday, May 23, 2026

New York: Gov. Kathy Hochul and Democrat Majorities Use The Budget to Adopt Gun Ban

On Thursday, May 21, the New York Senate and Assembly used the State Budget as a vehicle to not only finance state government but also to pass a handful of their other policy priorities. 

New ATF Director Tells Congress Agency Committed to Rebuilding Trust with the Industry, Federal Firearms Licensees, Lawful Gun Owners

News  

Tuesday, May 26, 2026

New ATF Director Tells Congress Agency Committed to Rebuilding Trust with the Industry, Federal Firearms Licensees, Lawful Gun Owners

America’s Second Amendment community had some insights into the outlook of the newly confirmed ATF Director Robert Cekada, when he recently testified before the House Oversight Committee’s Subcommittee on Federal Law Enforcement. 

Virginia: Despite Injunction, Virginia State Police to Conduct Background Checks for Private Sales

Thursday, May 28, 2026

Virginia: Despite Injunction, Virginia State Police to Conduct Background Checks for Private Sales

On May 27th, Virginia-based gun rights group the Virginia Citizens Defense League (VCDL) was informed by the Virginia Attorney General’s office that the Virginia State Police (VSP) would resume conducting background checks on private firearm ...

Talking Turkey: Spanberger Admits Legislation Bans Firearms “Frequently Used” for Lawful Purpose

News  

Tuesday, May 26, 2026

Talking Turkey: Spanberger Admits Legislation Bans Firearms “Frequently Used” for Lawful Purpose

Anti-gun arrogance, or incompetence, is reaching new heights.

Bloomberg’s Concealed Carry Policy Guide Built on Bureaucracy, Not Public Safety

News  

Tuesday, May 26, 2026

Bloomberg’s Concealed Carry Policy Guide Built on Bureaucracy, Not Public Safety

Anti-gun extremist Michael Bloomberg thankfully commands fewer headlines these days. But policy efforts like the latest “Public Carry Permitting Model Policy Guide”  from the Johns Hopkins School of Public Health’s Center for Gun Violence Solutions still ...

Florida: Second Amendment Sales Tax Holiday Passes Legislature

Friday, May 29, 2026

Florida: Second Amendment Sales Tax Holiday Passes Legislature

Today, May 29th, marks the last day of the Florida special session. HB 7031-E received final passage and will soon be transmitted to Governor's desk for his consideration. 

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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.