Without Warning is a collaborative studio album by American rappers 21 Savage, Offset and record producer Metro Boomin. The album was released on October 31, 2017, by Boominati Worldwide, Capitol Records, Epic Records, Motown, Quality Control Music, Republic Records and Slaughter Gang.It features guest appearances from Travis Scott and Quavo. Meanwhile, the album's production was handled primarily by Metro Boomin, alongside Bijan Amir, Cubeatz, Dre Moon and Southside. Without Warning charted at number four on the US Billboard 200, and received generally positive reviews from critics.