Atlanta's dynamic duo have struck again. Platinum this time around. Metro Boomin and 21 Savage's "X" has been certified double platinum a mere three months after it first sold a million units. This means they've sold two million units since the single's release.

Their collaboration album Savage Mode was an all-around success and includes another platinum record -- "No Heart." 21 is gearing up for his upcoming ISSA tour with Young M.A and others. He's also jumped on a track with Youngboy Never Broke Again on TheFate of the Furious soundtrack. 

As for Metro Boomin, besides working on hits for Kodak Black and Future recently, he's probably hard at work in the studio. Fans who are eager for Savage Mode 2 will be happy to know that the duo apparently have made 20 or 30 more songs together.