Based on analysis of 5 sections of legislative text.

• Requires dismissal of any covered claim pending on the Act’s enactment date that qualifies as a "qualified civil liability action."
• Expands PLCAA definitions to include owners and employees, broadened product categories (accessories like magazines and optics), and a new proximate-cause definition.
• Creates a federal removal and fast-track dismissal process for defendants asserting immunity, including immediate interlocutory appeals of denials.
• Requires heightened pleading of exceptions to immunity (facts showing scienter and proximate cause) and directs courts to rule on proximate cause as a legal matter.
• Authorizes fee-shifting: prevailing defendants who obtain immunity are entitled to reasonable attorneys’ fees and court costs.
• Expressly preempts state and local laws that impose liability or permit civil/administrative remedies based on criminal misuse, alteration, or modification of qualified products.
• Broadens immunity coverage to more industry participants and more product types while narrowing plaintiffs’ ability to maintain actions tied to third-party criminal misuse.
• Gives federal courts discretionary supplemental jurisdiction over related claims after removal and allows them to retain or dismiss remaining claims as appropriate.