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Posted by: TEEBONE ®

09/25/2019, 20:20:25

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In Duncan v. Becerra Brief, FPC Argues 'Large Capacity' Magazines are Intrinsic Parts of Semi-Auto Guns - The Truth About Guns

Dan Zimmerman
6-7 minutes

Yesterday, the Firearms Policy Coalition, along with the Second Amendment Foundation, Armed Equality and other pro-gun rights orgs, filed a brief in the Ninth Circuit Court of Appeals in the pending case, Duncan v. Becerra which challenges California’s ban on “large capacity” magazines.

The brief makes a rather novel argument. Under Heller, guns “in common use” expressly cannot be banned. The brief goes into great detail explaining why “large capacity” magazines are in common use (hundreds of millions of them in circulation) and are neither dangerous or unusual.

But, you’re probably thinking, magazines aren’t firearms. Not according to the argument presented in the brief. The FPC’s position is this:

Magazines are intrinsic parts of all semi-automatic firearms. A magazine is simply “a receptacle for a firearm that holds a plurality of cartridges or shells under spring pressure preparatory for feeding into the chamber.” Glossary, SPORTING ARMS AND AMMUNITION 23 MANUFACTURERS’ INSTITUTE, (last visited Sept. 23, 2019).

Magazines are inherent operating parts of functioning semi-automatic firearms, because the firearms are essentially inoperable without them. This is particularly true in California, which requires many models of pistols sold at retail to have “magazine disconnect mechanisms”—making these firearms incapable of being fired without a magazine. See Cal. Pen. Code §§ 31910(b)(4)-(6), 32000, and 16900 (defining “magazine disconnect mechanism” as “a mechanism that prevents a semiautomatic pistol that has a detachable magazine from operating to strike the primer of ammunition in the firing chamber when a detachable magazine is not inserted in the semiautomatic pistol”).

Since California has insisted that modern, semiautomatic firearms be rendered nonfunctional without a magazine, it necessarily follows that the magazine constitutes an inherent operating part of the firearm. “Because magazines feed ammunition into certain guns, and ammunition is necessary for such a gun to function as intended, magazines are ‘arms’ within the meaning of the Second Amendment.” Ass’n of New Jersey Rifle & Pistol Clubs, Inc. v. Attorney Gen. New Jersey, 910 F.3d 106, 116 (3d Cir. 2018).

By that argument, banning certain “in common use” magazines is the same as banning “in common use” firearms, which has been declared unconstitutional under Heller.

Read the whole brief here.

Here’s the FPC’s press release . . .

SAN FRANCISCO, CA (September 24, 2019) — Today, Firearms Policy Coalition (FPC) announced the filing of an important legal brief in the Ninth Circuit Court of Appeals regarding the State of California’s ban on so-called “large-capacity” magazines that hold more than ten rounds of ammunition. The brief is available online at

FPC’s coalition brief was joined by nine individual gun owners, all plaintiffs in another federal magazine lawsuit, and eight Second Amendment advocacy organizations, including Second Amendment Foundation and Armed Equality—a pro-right to keep and bear arms group that emphasizes armed and responsible self-defense for its LGBTQ+ members, who are especially vulnerable to attacks involving multiple assailants. The brief argues that so-called “large-capacity” magazines are inherent components of functional firearms; that they are constitutionally protected because they are “in common use” for lawful purposes;  and that because they are constitutionally protected, they cannot be banned.

“This case presents the type of Second Amendment challenge the Supreme Court has ruled on more than any other: a challenge to a prohibition on particular arms. And the Court’s precedent is clear: if the arms are commonly owned by law-abiding citizens, they cannot be prohibited,” said FPC Director of Research and brief lead author, Joseph Greenlee. “Evidence presented in this case shows that over 100 million magazines of the type that the State of California bans are owned in America. It is therefore indisputable that the magazines are common, and as such, their prohibition violates the Second Amendment.”

“Magazines are inherent, operating parts of all semi-automatic firearms, and it is indisputable that the so-called ‘large-capacity magazines’ at issue in this case are in common use for lawful purposes and protected by the Constitution,” explained George M. Lee of Seiler Epstein LLP, co-counsel on the brief and lead counsel in a similar magazine challenge in the Eastern District of California Federal District Court. “This brief shows why the court must affirm the decision below and restore the true command of Heller, which holds that these arms cannot be banned.”

Attorney Lee also recently filed a federal constitutional challenge to California’s ban on so-called “assault weapons” based on the district court’s ruling in Duncan (striking down the California magazine ban) and the State’s definitions of banned “assault weapons” (some of which are based on a firearm’s characteristics, including the use of a so-called “large-capacity” magazine in an otherwise legally-configured firearm). That case, captioned Miller v. Becerra, was assigned to Southern District of California Federal District Court Judge Roger T. Benitez, who struck down the State’s magazine ban in Duncan. The parties expect further filings in that case in the coming weeks.

Firearms Policy Coalition ( is a 501(c)4 grassroots nonprofit organization. FPC’s mission is to protect and defend the Constitution of the United States—especially the fundamental, individual Second Amendment right to keep and bear arms—advance individual liberty, and restore freedom.


Democrats wouldn't buy a clue if it was government subsidized.

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