The devastating toll of gun violence has given rise to hundreds of lawsuits seeking justice on behalf of victims and their families. A significant number of challenges against gun companies, however, are blocked by courts' broad reading of the Protection of Lawful Commerce in Arms Act (PLCAA) - a federal statute often interpreted to shield the gun industry from civil liability. This article reexamines PLCAA in light of the Supreme Court's recent federalism caselaw, which counsels courts to narrowly construe federal laws that could otherwise upset the balance of power between states and the federal government. Since PLCAA infringes on traditional areas of state authority, the Supreme Court's federalism jurisprudence requires lower courts to interpret PLCAA narrowly, to not bar states from imposing negligence, nuisance, product liability, or other common law liability on gun companies. Reading PLCAA in line with federalism principles would preserve states' traditional authority over their civil justice laws, and enable gun violence victims, and their families, to hold gun companies responsible for wrongdoing.