The drug-addled cop who stole police guns, cash and iPads from the 9th Precinct police station in the East Village is going away for a long time. Nicholas Mina, 32, yesterday took a guilty plea for his part in a gun-stealing drug-dealing conspiracy that is still working its way through the courts. The cop for 4 1/2 years now faces 15 1/2 years behind bars.

Mina, who has been held without bail since his July arrest, yesterday admitted to stealing from his fellow officers to fuel a raging painkiller addiction. In addition to three Glocks and a Smith & Wesson he had taken from lockers this spring at the 9th Precinct, Mina also admitted to selling his own, private-use Glock. According to the Manhattan DA's office, "Each sale was monitored by undercover members of the NYPD’s Firearms Investigation Unit."

So far two of Mina's alleged co-conspirators have pleaded guilty in the case: Ivan Chavez, 25, who is getting 20 years in jail for his role buying and selling drugs and guns, and Marcos Echevarria, 22, who is going to jail for 8 years for his role. Meanwhile charges against 64-year-old Meryl Leibowitz and 38-year-old former dot-com millionaire Jennifer Sultan are still pending.

"As a New York City police officer, Nicholas Mina had the duty to protect citizens, but instead, he put their lives and the lives of his fellow officers at risk," Manhattan DA Cy Vance said in a statement after. "Despite the continued serious problem of gun violence in our city, this defendant gave criminals easy access to dangerous weapons." Mina's official sentencing is set for November 7.