The families of victims of the Sandy Hook school shooting have retained former U.S. Solicitor General Donald Verrilli Jr. to represent them in their U.S. Supreme Court fight with gunmaker Remington Arms Co. LLC.

Court filings show Verrilli, of Washington, D.C.-based Munger, Tolles & Olson, is now the counsel of record for the plaintiffs. He filed a brief on their behalf Friday to oppose Remington’s attempt to have the U.S. Supreme Court rule that a federal law shields it from liability in the Sandy Hook case.