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An Update on Challenges to State Assault Weapon and Magazine Bans

In May 2023, Jake Charles published an overview of Second Amendment litigation challenging bans on certain kinds of semi-automatic firearms (often labeled assault weapons) at the state level.  As the Court is preparing to confront its next assault weapons cert petition in Snope v. Brown (formerly Bianchi v. Brown)—a case challenging Maryland’s ban which was recently upheld by the en banc Fourth Circuit—this post rolls forward the earlier survey of ongoing litigation challenging both assault weapon and large-capacity magazine restrictions.

The procedural posture of these cases (captured in the status column) is potentially all the more important these days, as the Court rejected a petition in the challenge to Illinois’ ban earlier this year primarily because the case was only at the preliminary injunction stage and the factual record was insufficiently developed.  In that case, NAGR v. Naperville, Justice Alito voted to grant the petition.  Justice Thomas wrote separately to emphasize his view that “[t]he Seventh Circuit’s decision illustrates why this Court must provide more guidance on which weapons the Second Amendment covers” because “[i]t is difficult to see how the Seventh Circuit could have concluded that the most widely owned semiautomatic rifles are not ‘Arms’ protected by the Second Amendment.”  Justice Thomas nevertheless thought it proper to deny the petition given the status of the case and wrote that the “Court is rightly wary of taking cases in an interlocutory posture.”

The justices decided Bruen at an early stage without full factual development regarding the operation of New York’s discretionary licensing system (including whether the law operated differently depending on geography).  But they may be more reticent today to take a case without a fully developed factual record, especially one involving a topic as high profile as assault weapons.  That said, Justice Thomas is certainly correct that the Court will ultimately need to clarify the scope of the “arms” protected by the Second Amendment.  And an assault weapon or LCM challenge seems the most likely class-of-arms case to make its way onto the Court’s docket in the coming years. 

Here is a quick update on the major ongoing cases.  It focuses on the headline legal challenge to each state law but otherwise may not capture all litigation. 

State

Law challenged

Circuit

Case Caption

Status

Factfinding?

California

LCM ban (more than 10 rounds); enacted in 2010

9th Cir.

Duncan v. Bonta 

(23-55805)

  • District court granted PI and struck down the law in October 2023
  • Argued before the en banc court in March 2024
  • Other California cases (such as an AW ban challenge) are being held pending the Duncan ruling

Pre-Bruen case with a more developed lower-court factual record

Colorado

LCM ban (more than 15 rounds); enacted in 2013

10th Cir.

Gates v. Polis

(24-1209)

  • Case withdrawn by plaintiffs
  • Reporting suggests this was a result of issues and rulings regarding the plaintiffs’ common-use evidence

No

Connecticut

AW and LCM ban (more than 10 rounds); enacted in 2013

2d Cir.

NAGR v. Lamont

(23-1162)

  • District court denied PI in August 2024
  • Panel heard oral argument on October 16, 2024

No, decided on preliminary injunction

Delaware

AW and LCM ban (more than 17 rounds); enacted in 2022

3d Cir.

Gray v. Jennings

(24-309)

  • Third Circuit affirmed denial of PI on procedural grounds in July 2024
  • Cert petition filed and pending
  • Supreme Court has requested a response from Delaware

No, decided on preliminary injunction

Illinois

AW and LCM ban (more than 10 rounds); enacted in 2023

7th Cir.

NAGR v. Naperville (23-1353)

formerly Bevis v. Naperville

  • Seventh Circuit panel upheld the law in November 2023
  • Supreme Court denied certiorari in July 2024
  • Cases proceeding at the trial court level

No / in progress

Maryland

AW ban; enacted in 2013

4th Cir.

Snope v. Brown (21-1255)

formerly Bianchi v. Brown 

  • En banc Fourth Circuit upheld the law in August 2024
  • Cert petition filed and pending Maryland’s response

Arguably yes, litigation has been ongoing since 2013 including summary judgment briefing

Massachusetts

AW and LCM ban (more than 10 rounds)

1st Cir.

Capen v. Campbell

(24-1061)

  • District court denied PI in December 2023
  • Panel heard oral argument on October 7, 2024

No, decided on preliminary injunction

New Jersey

LCM and AW ban (more than 10 rounds); AW ban enacted in 1990, LCM ban amended most recently in 2018

3d Cir.

Association of N.J. Rifle & Pistol Clubs v. Platkin

(24-2506)

  • District court granted PI in part in July 2024
  • Cross-appeales filed with the Third Circuit
  • Case will be fully briefed by the end of February

No, decided on preliminary injunction

New York

AW ban; originally enacted in 1994 and amended in 2013

2d Cir.

Lane v. James

(22-cv-10989)

 

  • District court declined to impose a stay pending the Second Circuit decision in Lamont and denied the state’s motion to dismiss in January 2024
  • Cross motions for summary judgement currently pending

Yes, once summary judgment decision is issued

Oregon

LCM ban (more than 10 rounds); enacted in 2022 by ballot initiative

9th Cir.

Oregon Firearms Federation v. Brown

(23-35540)

  • District court denied PI and later denied MSJ in May 2023
  • Proceedings stayed pending decision in Duncan v. Bonta

Bench trial held

Rhode Island

LCM ban (more than 10 rounds); enacted in 2022

1st Cir.

Ocean State Tactical v. Rhode Island

(23-1072)

  • First Circuit panel upheld the law in March 2024
  • Cert petition filed and pending

No, decided on preliminary injunction

Vermont

LCM ban (more than 10 rounds for a long gun and more than 15 rounds for a handgun); enacted in 2018

2d Cir.

Vermont Federation of Sportsmen’s Clubs v. Birmingham 

(24-2026)

  • District court denied PI in July 2024
  • Appeal docketed but stayed pending decision in NAGR v. Lamont

No, decided on preliminary injunction

Washington

AW ban; enacted in 2023

9th Cir.

Hartford v. Ferguson (23-cv-05364)

  • Case still at district court level
  • Proceedings stayed pending decision in Duncan v. Bonta

No

Washington, D.C.

LCM ban (more than 10 rounds); enacted in 2008

D.C. Cir.

Hanson v. D.C.

(23-7061)

 

  • D.C. Circuit panel upheld the law in October 2024
  • Plaintiffs will likely request en banc review or file a cert petition in the coming months

No, decided on preliminary injunction

Four appellate courts have now rejected Second Amendment challenges to these laws.  Two decisions turn solely on the second step of the Bruen test that requires a comparison to historical analogues.  The First Circuit assumed (without detailed analysis) that LCMs are protected “arms,” and the D.C. Circuit found on its own analysis that the Second Amendment’s text “presumptively protects the possession of []LCMs.”  By contrast, the Seventh and Fourth Circuits each resolved the case at “step one” by concluding that the banned weapons and magazines are not protected by the text of the amendment.  But both courts nevertheless proceeded to conduct the historical analysis and also find the regulations consistent with history. 

In terms of upcoming decisions, the big ones to watch are Duncan v. Bonta from the en banc 9th Circuit, NAGR v. Lamont from the Second Circuit, and Capen v. Campbell from the First Circuit.  Duncan will likely come first, considering that it was argued eight months ago, while NAGR and Capen were just argued last month.  All three cases involve prohibitions enacted over a decade ago where there has likely been sufficient lower court factfinding to avoid a cert denial on that basis alone.  This means that, even if the Court declines to take up the pending Snope v. Brown petition, it will almost certainly see more petitions soon.