An aging hit man once used as an enforcer by mob boss John Gotti has been sentenced to life in prison for four cold-blooded killings.

Charles Carneglia was sentenced Thursday in Brooklyn federal court.

Prosecutors portrayed him as a feared Gambino organized crime family soldier who was eager to please his superiors.

During a 1990 ambush in the World Trade Center parking lot, Carneglia pumped four bullets into a man who ignored Gotti's invitation to a social club.

Other victims included a security guard, gunned down during an armored car heist at Kennedy International Airport.