McKinley J. Phipps Jr. (born 30 July 1977), better known by his stage name Mac, is an American rapper from New Orleans, Louisiana. He released his debut album, The Lyrical Midget, in 1990 at the age of thirteen under the stage name Lil Mac. Mac later signed with Master P's No Limit Records and would become one of the most critically acclaimed artists on the label, both as a solo rapper and member of the 504 Boyz. Mac released two solo albums and one album as part of the 504 Boyz. His most commercially successful album was Shell Shocked, released in 1998. The album sold 400,000 copies in just a month, and by he year 1999 it was certified Platinum by the RIAA.
In 2001, Mac was convicted of manslaughter and sentenced to 30 years in prison. He is currently serving his sentence at the Elayn Hunt Correctional Center in Louisiana. Phipps maintains his innocence, and his parents have campaigned to re-open the investigation into his case for many years.