Officers responded to the range at 1060 N. Lake St. about 4:30 p.m. Thursday to find the man with an apparent self-inflicted gunshot wound to the head, said Burbank Police Sgt. Darin Ryburn.
The man was pronounced dead at the scene by Burbank Fire Department paramedics. He was identified as 42-year-old David Joseph Magarelli, according to the Los Angeles County Coroner's Office.
A spokesman for the coroner's office said his death is being treated as a suicide.
The investigation surrounding the shooting remained ongoing, and an autopsy was scheduled for Friday, officials said.
The shooting range has a history of self-inflicted shooting deaths, Ryburn said.
Last year, 64-year-old Burbank resident Stephen Daniels shot himself in the head at the firing range.
Daniels' death came about a year after a 25-year-old Glendale man rented a handgun and also shot himself in the head at the facility.
The firing range instituted an assortment of safety measures in response to the incident, officials have said.
An employee who answered the phone at the shooting range on Friday declined to comment on the latest incident.
Believed to be one of the first indoor shooting ranges in Los Angeles and Orange counties, the Firing-Line also operates ranges in Northridge and Huntington Beach.
The Burbank range opened in 1994 and serves primarily Burbank, Glendale and Pasadena.