Video: Machine Gun Kelly – Rap Devil (Eminem Diss) Posted on September 4, 2018 by Lucky Lefty Machine Gun Kelly goes after Em to defend new age rap. Check the visuals to Rap Devil after the jump This entry was posted in Eargasms, Single Tracks, Videos and tagged eminem, Eminem Diss, hip hop, Machine Gun Kelly, MGK, Rap Devil. Bookmark the permalink.