Young Buck Sentenced To 7 Months In Prison

Young Buck is heading back to prison.

Buck was in court Wednesday for a probation violation, and the judge didn't go easy on him ... he was sentenced to 7 months behind bars.

TMZ broke the story ... Buck was arrested last month for allegedly threatening to torch his ex-GF's apartment.

The probation all stems from a 2012 gun charge when federal agents found illegal firearms in his home during a raid.