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Former G-Unit rappers Game and Young Buck are reuniting.  For the first time in years, the two have hit the studio together and are collaborating on a track called "Rolling Stone." 

A brief clip of the studio session appears in a trailer for an upcoming documentary about Buck called "Buck Mentality." 

Set to arrive next month, the film follows Young Buck's return to the lime light after exiting prison earlier this year.  Fans can pre-order the film at  

*Warning: Explicit Language