NEW ORLEANS, LA (June 5, 2023) – Today, Firearms Policy Coalition (FPC) announced the filing of an opening brief with the Fifth Circuit Court of Appeals in Mock v. Garland, FPC and FPC Action Foundation’s challenge to ATF’s pistol brace rule. Today’s brief was filed less than two weeks after the court clarified that its injunction against the rule covers FPC’s members. The brief can be viewed at FPCLegal.org.