Suing Over a Firearm Injury: What PLCAA Actually Blocks

A shooting victim’s instinct is often to ask whether the company that made the weapon can be held responsible. For most cases the honest answer is no — Congress built a specific federal shield for exactly that question in 2005. But the shield has real, litigated holes, and knowing which hole your facts might fit is most of what this area of law actually is.

Quick answer: The Protection of Lawful Commerce in Arms Act (PLCAA), 15 U.S.C. §§ 7901-7903, generally bars civil suits against firearm manufacturers and licensed dealers for harm from a third party’s criminal or unlawful misuse of a product that functioned as designed. It does not bar a claim for a product defect causing malfunction, a negligent entrustment claim against a seller who knew or should have known the buyer was unfit, or the predicate exception for a knowing statutory violation that proximately caused the harm — the theory that survived in the Sandy Hook litigation. A negligent security claim against a property owner is a completely separate matter PLCAA never reaches.

Why the Bar Exists, and What It Actually Covers

Congress passed PLCAA in 2005 in response to a wave of lawsuits by cities and individuals against gun manufacturers over crimes committed with lawfully sold firearms, on the reasoning that a manufacturer should not bear civil liability for harm resulting from the criminal or unlawful misuse of a product that worked exactly as it was designed to.

The statute’s core immunity applies to a “qualified civil liability action” — broadly, a suit against a manufacturer or licensed dealer for damages from the criminal or unlawful use of a firearm or ammunition by a third party. Where that description fits, the case is generally barred regardless of how sympathetic the facts are, unless one of the statute’s own exceptions applies.

The Exceptions That Actually Matter

PLCAA lists several exceptions, and three come up repeatedly in practice.

1. Negligent entrustment

Where the seller knew or reasonably should have known the buyer was likely to use the firearm unlawfully or was disqualified from purchasing it — underage, subject to a disqualifying record, exhibiting signs the seller ignored — a claim can proceed against that seller specifically. This is the firearm-specific application of the doctrine our guide to vicarious liability and negligent entrustment covers generally, and it turns entirely on what the seller actually knew or should have detected at the point of sale.

2. The predicate exception

A claim may proceed where the manufacturer or seller knowingly violated a statute applicable to the sale or marketing of firearms, and that violation was a proximate cause of the harm. This is the exception that has done the most work in recent litigation.

Soto v. Bushmaster Firearms International, LLC, 331 Conn. 53 (2019) is the landmark application: survivors and families from the Sandy Hook Elementary School shooting argued that marketing a semi-automatic rifle by emphasizing its military and assaultive characteristics to civilian purchasers violated Connecticut’s unfair trade practices statute, and that this marketing was a proximate cause of the shooter’s access to and use of the weapon. The Connecticut Supreme Court allowed the theory to proceed under the predicate exception, and the case was later resolved by settlement — which made this route a genuinely live strategy rather than a theoretical one, while leaving the underlying legal question less than fully tested at the U.S. Supreme Court level.

The exception requires a real predicate statute — an actual firearms-specific law that was knowingly violated — not simply an argument that the marketing or sale was generally irresponsible.

3. Ordinary product liability for a genuine malfunction

PLCAA’s immunity concerns harm from criminal or unlawful misuse of a properly functioning product. It says nothing about a firearm that does not function as designed — an accidental discharge from a failed safety mechanism, a defective firing pin, a barrel that fails under normal use. That is an ordinary product liability claim, on the same design-defect, manufacturing-defect and failure-to-warn theories our guide to defective product claims sets out, entirely outside PLCAA’s scope because the theory is not about third-party criminal misuse at all.

What PLCAA Does Not Touch

Three claims that get confused with the manufacturer question but are analyzed under completely separate frameworks:

Negligent security. Where a shooting occurred at a business or venue with inadequate security, the claim runs against the property owner or operator for its own failure to provide reasonable protection against a foreseeable crime — the doctrine in our guide to negligent security claims. PLCAA has no application to this theory at all, and it can be pursued alongside a manufacturer claim rather than instead of one.

A claim against the shooter directly. Always available in principle, though frequently of limited practical value if the defendant has no meaningful assets — the same collectibility problem our guide to vicarious liability describes generally.

Insurance and homeowners coverage questions. A separate analysis entirely, turning on the specific policy language and any intentional-acts exclusion.

Evidence That Matters in a PLCAA-Exception Case

• Sale records and the point-of-sale process — background check documentation, any red flags noted or ignored
• The seller’s actual knowledge at the time of sale — prior contact with the buyer, statements made, documented concerns
• Marketing materials, where a predicate-exception theory is in play — advertising, packaging, and how the product was positioned to purchasers
• The specific statute alleged to have been violated, and evidence connecting that violation to the harm
• The firearm itself, preserved and unaltered, where a malfunction theory is at issue — the same preservation discipline as any product claim
• State licensing and compliance records for the dealer

Practical Steps

1. Identify precisely what happened — a functioning firearm misused by a third party points toward the narrow PLCAA exceptions; a firearm that malfunctioned points toward an ordinary product claim outside PLCAA entirely.
2. Investigate the seller’s knowledge at the point of sale, if a specific dealer or private seller can be identified, for a negligent entrustment theory.
3. Identify any specific firearms statute that may have been violated in the sale, for a predicate-exception theory.
4. Preserve the firearm and any packaging or manual, unaltered, if a malfunction is suspected.
5. Separately evaluate the property or venue where the shooting occurred for a negligent security claim, which is independent of the manufacturer question.
6. Get an attorney experienced in this specific area. PLCAA litigation is specialized, the exceptions are narrowly construed, and the predicate-exception theory in particular requires expertise most general personal injury practices do not have.

A Model Other Industries Are Now Trying to Copy

PLCAA’s basic structure — a federal statute granting an entire industry broad immunity from lawsuits over harm its products cause — has become a template other industries facing mass litigation are now trying to copy directly. A pending 2026 bill, explicitly named and modeled after PLCAA, would grant similar immunity to engineered stone slab manufacturers facing hundreds of silicosis lawsuits — see our guide to engineered stone silicosis lawsuits for how closely that proposal tracks this one.

Sources & Further Reading

• Protection of Lawful Commerce in Arms Act, 15 U.S.C. §§ 7901-7903 — the core immunity for a “qualified civil liability action” and its statutory exceptions, including negligent entrustment and the predicate exception
• Soto v. Bushmaster Firearms International, LLC, 331 Conn. 53 (2019) — the predicate exception applied to firearm marketing practices, arising from the Sandy Hook Elementary School shooting litigation
• Restatement (Second) of Torts § 390 — negligent entrustment of a chattel to a person known to be likely to use it in a manner involving unreasonable risk
• Restatement (Third) of Torts: Products Liability — the design-defect, manufacturing-defect and failure-to-warn framework applicable where PLCAA’s third-party-misuse immunity does not apply at all
• State licensing and sale-record requirements for federally licensed firearms dealers, and state unfair trade practices statutes of the kind at issue in the predicate-exception litigation above
• See our guides to vicarious liability and negligent entrustment for the general doctrine behind the entrustment exception, defective product claims for the malfunction theory PLCAA does not touch, and negligent security claims for the separate claim against a property owner