40 Cal.
| 40 Cal. | |
|---|---|
| Byrd in New York City in 2021 | |
| Background information | |
| Birth name | Calvin Robert Byrd | 
| Born | December 17, 1979 | 
| Origin | Manhattan, New York City, U.S. | 
| Genres | Hip hop | 
| Years active | 2004–present | 
| Labels | 
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| Formerly of | The Diplomats | 
Calvin Alan Byrd (born December 17, 1979), professionally known by his stage name 40 Cal., is an American rapper. He was a member of now-defunct American hip-hop group The Diplomats.
Byrd made his first appearance on the self-titled theme song, "40 Cal" for the Dipset album Diplomatic Immunity 2. He took a part on MTV2's Fight Klub MC battles.