The two stars have been going at each other since Eminem targeted MGK on "Not Alike", a track on his hit latest album "Kamikaze". Kelly responded with his own diss track, "Rap Devil", and the "Lose Yourself" hitmaker retaliated with "Killshot", which he released on Friday, September 14.
The download comes with artwork featuring his rap rival's face as the target of a gun with a smiley face bullseye on his forehead, while Eminem raps: "Younger me? No, you're the whack me/It's funny, but so true/I'd rather be 80 year old me than 20 year old you."
He also pokes fun at the younger rapper's look, adding: "How you gonna name yourself after a damn gun and have a man bun?"
MGK refused to let the feud lie there and fired back by tweeting a picture of the judges on U.K. reality show "Strictly Come Dancing" holding up scoring paddles with the number 6, and now Kelly is taking his feud with his fellow rapper to the stage.
In a post on MGK's Instagram, the 29-year-old is pictured wearing a shirt featuring Killshot's artwork while performing at the Amway Center in Orlando on Sunday, September 16. Kelly has his middle finger raised and the photo is captioned, "He missed. #legshot #rapdevilstillNUMBERONE #letstalkaboutit."
The photo also shows the audience members holding up their middle fingers.
Eminem has yet to respond.
The bad blood between the two began when Kelly made comments about Eminem's daughter Hailie.