Philly rapper AR-Ab and three members of his Original Block Hustlaz (OBH) record label have been convicted on several charges of conspiracy and distribution of crack cocaine, heroin, and methamphetamine after a two-week trial

The mandatory federal minimum on the charges is 15 years, but AR-Ab could be getting more than that when he is sentenced later.

Although they didn't hit AR-Ab and OBH with murder charges, during the trial the Feds suggested AR-Ab killed a man named Robert Johnson and used his lyrics of proof of that crime.

There were originally nine OBH members charged, but several of them plead guilty and testified against AR-Ab and the others.  Their inside information made it hard for AR-Ab's lawyers to argue that OBH was a legitimate record company and all the cash flowing through AR-Ab's world had music industry receipts on it,

Last week, Dark Lo, the second most popular rapper on OBH, was taken in by the Feds on charges of witness intimidation, which could get him up to 20 years. Days before his arrest, Dark Lo had shown up in court when an OBH member turned government witness was slated to appear. Lo was removed when the witness refused to testify in his presence.