Mozzy got arrested for having a gun he's not supposed to have ... according to law enforcement.
Las Vegas PD says the rapper was pulled over Thursday night in a black Maserati without license plates for failing to signal during a lane change. Mozzy didn't have a driver's license and, upon inspection of his vehicle police found a loaded Glock in a black book bag.
Mozzy is an ex-felon. He went to prison after a 2014 conviction for gun possession and possession of a controlled substance.
He's now facing a charge for gun possession by a prohibited person.
The rapper was released after posting $5k bail.