Illinois firearm rights groups told a Seventh Circuit panel Wednesday that a 1961 state law banning possession of firearm silencers infringes the Second Amendment. After a 2023 suit, District Judge David Dugan upheld the ban and plaintiffs appealed in 2025, with attorney Peter Patterson of Cooper & Kirk arguing that suppressors provide functional self-defense benefits such as less noise, reduced recoil and improved accuracy as recognized in the Fifth Circuit Comeaux ruling. Patterson invoked the Supreme Court's Wolford v. Lopez decision applying the Bruen historical tradition test while Judge John Lee questioned where courts should draw the self-defense line.