A Greenwich man is facing New York's most serious felony charge after investigators say he was running an arsenal out of reach of the law — 22 untraceable "ghost guns," three more firearms, high-capacity magazines and six ounces of cocaine, all seized in a coordinated undercover takedown spanning two states.

Michael Larriuz, 49, was charged with first-degree criminal sale of a controlled substance, first-degree sale of a firearm and five counts of third-degree criminal sale of a controlled substance, Westchester County District Attorney Susan Cacace announced. First-degree criminal sale of a controlled substance is a Class A-I felony, New York's highest felony classification — the same category reserved for the most serious violent crimes.

Larriuz was arraigned in White Plains City Court. Bail was set at $100,000 cash, $250,000 bond or $500,000 partially secured bond.

The operation stretched across Connecticut and New York and pulled together five law enforcement agencies: the Westchester County DA's Criminal Investigators Squad, the Greenwich Police Department, the FBI's Westchester Safe Streets Task Force, Homeland Security Investigations, and the Putnam County Sheriff's Office.

Ghost guns — unserialized, untraceable firearms built from 3D-printed parts or unfinished components — are heavily restricted in Connecticut and outright illegal in New York. That makes the 22 recovered in this case a significant haul, on top of the three additional firearms and multiple large-capacity magazines investigators seized.

Greenwich Police Chief James Heavey credited the joint effort for taking the weapons off the street.

"I am very happy with the cooperation and work that our departments did together, and I am proud that we were able to get these illegal weapons off our streets," Heavey said.

Greenwich police are asking anyone with information about illegal firearms or drug activity in town to call the department's tip line at 203-622-8004.