The ringleader of a massive gun-trafficking organization spanning from Georgia to New York was sentenced in Brooklyn Thursday to 18 years behind bars.

Michael Quick, 33, had pleaded guilty to transporting weapons up I-95 and selling more than 150 — including an AR-15, a MAC-11 subcompact machine pistol and 151 other firearms — to undercover cops between September 2013 and April 2014, the Brooklyn DA’s Office said.