MADISON, Wis. (WFRV) - A 22-year-old Wisconsin man has been formally charged in federal court, accused of possessing a firearm as a felon and possessing a firearm with a machine gun conversion device. According to a release, Jontrae Larsen, 22, of Madison, allegedly possessed a Glock 17 handgun with a machine gun conversion device from Nov. 22, 2023, through on or about Jan. 6, 2024. One dead, another hospitalized from two-vehicle crash on State Highway 153 A machine gun conversion device converts a handgun from semi-automatic to fully automatic. Machine gun conversion devices are illegal, as are any firearms with the devices. Larsen faces up to 25 years in prison if convicted on both charges.