Jurors at Luigi Mangione’s murder trial will get to see the 3D-printed pistol and alleged “manifesto” found inside his backpack, a judge ruled Monday — handing prosecutors a key legal win. Altoona, Pa. cops followed legal protocol when searching the accused assassin’s bag at the police station after nabbing him for the December 2024 execution of UnitedHealthcare CEO Brian Thompson, Manhattan Supreme Court Judge Gregory Carro found. Monday’s decision means that the Manhattan District Attorney’s Office will get to reveal at trial the alleged murder weapon — a 9-millimeter handgun— discovered inside the 28-year-old’s bag after he was arrested at an Altoona McDonald’s after a dramatic five-day manhunt.