Wyoming Product Liability Claims for Defective Firearms and Ammunition

With world-class elk, pronghorn, and mule deer hunting spanning the Wind River Range, the Big Horn Mountains, and the Bridger-Teton National Forest, firearms and ammunition are central to daily life and outdoor recreation in Wyoming. Hunters and target shooters in Cheyenne, Casper, Cody, and Laramie trust that a rifle or pistol will only fire when the trigger is intentionally pulled and that the steel receiver will safely contain the immense chamber pressure of a cartridge. When a firearm discharges while holstered or a barrel shatters upon ignition, the resulting shrapnel wounds, permanent vision loss, or fatal gunshot injuries are devastating.

Many injured Wyoming gun owners mistakenly believe that federal immunity laws prevent all lawsuits against gun and ammunition companies. In reality, federal and state laws draw a sharp line between criminal misuse by third parties and mechanical or metallurgical defects created at the factory, preserving strong legal remedies for responsible gun owners harmed by faulty products.

How the Protection of Lawful Commerce in Arms Act (PLCAA) Applies to Defective Guns

Enacted by Congress to stop municipalities and victims of violent crime from suing gunmakers over third-party shootings, the Protection of Lawful Commerce in Arms Act (PLCAA) generally prohibits qualified civil liability actions against firearm and ammunition manufacturers, distributors, and federally licensed dealers under 15 U.S.C. § 7902(a). However, the statute only blocks lawsuits arising from the criminal or unlawful misuse of a weapon.

Congress explicitly carved out six exceptions to this immunity, including the crucial Product Defect Exception codified at 15 U.S.C. § 7903(5)(A)(v) and the breach of contract or warranty exception at 15 U.S.C. § 7903(5)(A)(iv). Under 15 U.S.C. § 7903(5)(A)(v), a Wyoming hunter or sport shooter has the full right to sue a manufacturer when physical injury, death, or property damage results directly from a defect in the design or manufacture of a firearm or ammunition used as intended or in a reasonably foreseeable manner. The only limitation is that if the discharge was caused by a volitional act that constituted a criminal offense, the criminal act is deemed the sole proximate cause of the injury. For lawful hunters and range shooters who suffer an unintentional mechanical discharge or barrel explosion, the PLCAA does not block strict product liability claims recognized under Ogle v. Caterpillar Tractor Co., 716 P.2d 334 (WY Supreme Court 1986).

Specific Firearm and Ammunition Defects in Wyoming Litigation

Drop-Fire Defects and Inertial Discharges

Modern semi-automatic pistols, revolvers, and hunting rifles must be engineered with internal drop-safety mechanisms-such as firing-pin blocks, transfer bars, and balanced low-mass triggers-so the weapon cannot fire unless the trigger is deliberately depressed. Drop-fire defects occur when a firearm discharges upon being dropped onto rocky backcountry terrain, jolted inside a saddle scabbard, or bumped against a pickup truck console. These inertial discharges typically stem from poor sear-to-striker engagement geometry, out-of-spec metal injection molded (MIM) internal components, or the omission of a mechanical firing-pin block.

Exploding Rifle Barrels and Receiver Kabooms

Firing a centerfire hunting cartridge generates chamber pressures between 50,000 and 65,000 pounds per square inch (PSI). If a rifle barrel, boltlug, or muzzleloader breech plug contains microscopic metallurgical impurities, improper heat treatment, or substandard steel alloys, the barrel can violently rupture in the shooter's hands. Catastrophic receiver explosions-often called kabooms-also happen when a design flaw allows a semi-automatic or bolt-action firearm to detonate a cartridge slightly out of battery before the bolt is fully locked, blasting hot gases and brass shrapnel backward into the shooter's face and hands.

Faulty Safety Mechanisms and Trigger Assembly Failures

A firearm's manual safety and trigger assembly must maintain positive sear engagement under harsh cold, dust, and recoil. Historically, numerous bolt-action hunting rifles have been the subject of mass product liability litigation due to trigger connector designs that allow debris or dried lubricant to prevent the sear from resetting properly. This defect can cause a rifle to fire unexpectedly the exact moment the hunter switches the manual safety from Safe to Fire without ever touching the trigger, or to fire when closing the bolt handle. Under McLaughlin v. Michelin Tire Corp., 778 P.2d 59 (WY Supreme Court 1989) and Loredo v. Solvay America, Inc., 212 P.3d 614 (WY Supreme Court 2009), plaintiffs can establish liability by proving that a safer, solid-sear trigger design was technologically and economically feasible.

Defective Factory and Commercial Reloaded Ammunition

Even a flawlessly built rifle can explode if loaded with defective ammunition. Actionable ammunition defects include factory over-charges (where a automated loading machine drops a double charge of propellant or uses fast-burning pistol powder instead of rifle powder, spiking pressure far beyond Sporting Arms and Ammunition Manufacturers' Institute standards), brittle cartridge brass that ruptures at the case head, and squib loads. A squib load occurs when a cartridge lacks powder and lodges a bullet halfway down the barrel; when the shooter fires the next round, the obstructed barrel detonates. Both major ammunition factories and commercial remanufacturers who sell reloaded ammunition to the public can be held strictly liable for defective lots.

Step-by-Step Process in Wyoming

If you or a family member suffered an injury from a malfunctioning gun or cartridge in Cheyenne, Casper, Jackson, or anywhere in Wyoming, following a strict preservation and filing protocol is critical.

Step 1: Preserve the Firearm, Spent Brass, and Ammunition Box

Place the damaged firearm, all shattered metal fragments, the spent cartridge casing, and the original ammunition box (which contains the stamped factory lot number) in a secure, dry container. Never mail the firearm back to the manufacturer for a warranty inspection, as companies frequently replace the defective trigger or internal parts and destroy the proof you need for court.

Step 2: Document Trauma Care and Hunting Incident Reports

Seek immediate emergency medical care for shrapnel, blast, or gunshot wounds. If the incident occurred while hunting and is investigated by a county sheriff or the Wyoming Game and Fish Department, Cheyenne, ensure your statement clearly explains that the firearm discharged without a trigger pull or ruptured during normal firing.

Step 3: Conduct Non-Destructive Ballistic and Metallurgical Testing

Your attorney will arrange for independent forensic firearm examiners and metallurgists to conduct non-destructive X-ray and CT scans of the fire-control group before disassembling the weapon. Under Rohde v. Smiths Medical, 165 P.3d 433 (WY Supreme Court 2007) and Sims v. General Motors Corp., 751 P.2d 357 (WY Supreme Court 1988), expert testing is vital to prove the defect existed when it left the manufacturer's hands and to rule out secondary causes.

Step 4: Draft and File the Complaint Pleading the PLCAA Exception

Your legal team will file the lawsuit in a Wyoming state District Court-such as the First Judicial District Court, Laramie County, Cheyenne, the Seventh Judicial District Court, Natrona County, Casper, the Fifth Judicial District Court, Park County, Cody, or the Ninth Judicial District Court, Teton County, Jackson. Because most major gun and ammunition manufacturers are headquartered out of state, many claims are filed in the U.S. District Court for the District of Wyoming, Cheyenne or the U.S. District Court for the District of Wyoming, Casper under 28 U.S.C. § 1332 accompanied by Form JS 44, FED, U.S. District Court, Civil Cover Sheet. The complaint must explicitly plead facts satisfying 15 U.S.C. § 7903(5)(A)(v) to defeat early dismissal motions under Fed. R. Civ. P. 12(b)(6).

Step 5: Counter Comparative Fault and Modification Defenses

Gun manufacturers aggressively argue that the owner installed an aftermarket trigger, adjusted the factory pull weight, or used improperly handloaded ammunition. Under Wyo. Stat. Ann. § 1-1-109(a)(iv) and Wyo. Stat. Ann. § 1-1-109(b), product alteration or misuse is weighed by the jury as comparative fault, reducing damages proportionally and barring recovery only if the plaintiff's fault exceeds 50 percent.

How Much Does it Cost in Wyoming?

Litigating against national firearm and ammunition corporations involves court fees and specialized forensic costs:

• Wyoming District Court Filing Fee: Initiating a civil product liability suit costs $160 under Wyo. Stat. Ann. § 5-3-206, plus a $50 to $150 jury demand fee under Wyo. R. Civ. P. 38(b)(2).
• Federal District Court Filing Fee: Filing in the U.S. District Court for the District of Wyoming costs $405.
• Forensic Ballistics and Metallurgy Lab Fees: Industrial CT scanning, scanning electron microscopy, and SAAMI pressure testing of sister cartridges typically cost between $10,000 and $30,000.
• Contingency Fee Representation: Wyoming product liability attorneys advance all court and forensic laboratory expenses and charge a contingency fee of 33.3% to 40% of the amount recovered, meaning you pay nothing unless compensation is won.

How Long Does the Process Take?

Under Wyo. Stat. Ann. § 1-3-105(a)(iv)(C), injured shooters have 4 years from the date of the malfunction to file a strict liability or negligence lawsuit, and 4 years from purchase for warranty claims under Wyo. Stat. Ann. § 34.1-2-725. Fatal firearm defect claims must be brought within 2 years of death under Wyo. Stat. Ann. § 1-38-102(d). Because firearm manufacturers routinely file preliminary PLCAA immunity motions and demand joint laboratory protocols before testing the weapon, most cases take 15 to 26 months to resolve. You can use our directory on this website to find experienced Wyoming product liability lawyers ready to inspect your firearm and protect your rights.

Frequently Asked Questions (FAQ)