The feud between Machine Gun Kelly and Eminem doesn't appear to be ending anytime soon. Just days after producer Mr. Porter said Shady was gearing up to record a response to MGK's "Rap Devil" diss, the Cleveland rapper called out Em during a concert in Eminem's home state of Michigan.

Opening for rock band Fall Out Boy in Grand Rapids, Mich. at the Van Andel Arena, MGK said his beef with Eminem isn't a battle between Ohio and Michigan, it's a battle between the old and new. "This is not a battle between Michigan and Ohio," he told the crowd. "This is a battle between the past and the muthafuckin' future!"

While Em has yet to respond to MGK's scathing diss, the Detroit spitter is reportedly working on a response. During an interview with Skoglund16 TV, Mr. Porter, also known as Denaun Porter of D12 fame, revealed Shady is working on another project but said the rapper would get to recording a diss.

"We doing something else right now, but trust me, we'll get to it," he said. "The one thing that I'm worried about... You remember when Thanos threw that whole planet at Iron Man?"

MGK's "Rap Devil" diss arrived after Eminem threw shots at the Ohio native on the Royce 5'9"-assisted song "Not Alike" from his latest album, Kamikaze. On the track, Em called out MGK for a supposed diss on Tech N9ne's "No Reason."

On "Not Alike," Shady spits, "This little cock-sucker, he must be feeling himself/He wants to keep up his tough demeanor/So he does a feature, decides to team up with Nina/But next time you don't gotta use Tech N9ne/If you wanna come at me with a sub, Machine Gun/And I'm talking to you, but you already know who the fuck you are, Kelly."

Check out what Machine Gun Kelly had to say about Eminem below.

See Hip-Hop Fans Name The Most Disrespectful Diss Track of All Time

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