40 Cal (b. Calvin Alan Byrd) is a member of Harlem-based mixtape crew the Diplomats (aka Dipset). 40 Cal made his first appearance with the self titled theme song "40 Cal" which was on the Dipset album: Diplomatic Immunity, Vol. 2 which was in 2004. His reputation however, is built on his notable freestyle-battling skills, which were captured on MTV2's Fight Klub MC battles. He has made a name for himself separately from his Dipset clique, selling thousands of units on his own. Beginning in 2006, he stepped up his exposure and recording mixtapes for record labels to be sold nationally.
40 Cal (b. Calvin Alan Byrd) is a member of Harlem-based mixtape crew the Diplomats (aka Dipset). 40 Cal made his first appearance with the self titled theme song "40 Cal" which was on the Dipset album: Diplomatic Immunity, Vol. 2 which was in 2004. His reputation however, is built on his notable freestyle-battling skills, which were captured on MTV2's Fight Klub MC battles. He has made a name for himself separately from his Dipset clique, selling thousands of units on his own. Beginning in 2006, he stepped up his exposure and recording mixtapes for record labels to be sold nationally. 
