Something needs to change,' says Milwaukee native who turned in rifle to authorities A Milwaukee native said enough is enough and turned his semi-automatic rifle into the Broward County Sheriff's Office. Ben Dickmann grew up in Milwaukee, but moved to south Florida years ago. He shared a Facebook post of a sheriff's deputy taking possession of his AR-FiveSeven, which is similar to the AR-15 that was used in the high school shooting in Parkland, Florida.