Los Angeles County District Attorney's spokeswoman Jane Robison say prosecutors rejected filing the charges Thursday.
An after-hours message left for Knight's attorney, Marc Brumer, was not immediately returned. Brumer had denied a confrontation ever happened or that Knight was carrying a gun.
The 45-year-old is the co-founder of Death Row Records, which produced albums by rappers such as Tupac Shakur, Snoop Dogg and Dr. Dre.
