For Migos, making mixtapes seems about as easy as breathing. The group dropped another one today roughly a month after the release of Back To The Bando. Streets On Lock 4 finds Migos reconnecting with Rich The Kid and a number of other Atlanta-based artists: 2 Chainz, Jeezy, Dun Deal, Sonny Digital, Zaytoven, and Makonnen. Though Offset remains behind bars, a pair of tracks are credited to him. Stream/download the tape below, and read Migos' FADER cover story.