Authorities say 23-year-old Shakor Rodriguez transported the weapons from the south, and sometimes carried them on a bus in a duffle bag.
Rodriguez, originally from the Bronx, was attending Austin Peay State University in Clarksville, Tennessee.
He is charged in two indictments totaling 304 counts.
According to the investigation, Rodriguez sold most of the weapons near his former home near Weeks Avenue and Nelson Avenue in the Bronx, and multiple sales occurred on Allen Street in Manhattan.
"Stopping traffickers who flood our streets with illegal guns is mission critical in our work to smash the Iron Pipeline," NYPD Commissioner Keechant Sewell said. "The NYPD's officers, working with their prosecutorial partners in the Bronx District Attorney's Office, are the first line of defense in protecting our residents, our families, and our children from the scourge of gun violence and I commend their work in this important case."
RELATED | Bronx DA Darcel Clark to man who shot baby girl: 'You're not going to get away with it'
The investigation is continuing into how he obtained the guns and where they were purchased.
News of the major arrest comes as the Interstate Task Force on Illegal Guns held its first meeting.
Nine states, federal law enforcement agencies, and the NYPD are now working together to stop the flow of illegal gun.
Governor Kathy Hochul says New York has seen an 80% increase in firearm homicides since 2019.
"This is a national crisis, 90 of the 100 cities in the America are seeing an escalation in gun violence cases and we have to make sure that we're working together," she said.
ALSO READ | MTA officials address alarming rise in crime, promise more uniformed officers on platforms
The task force will focus on real-time intelligence gathering.
Hochul has also set aside more money for gun tracing and gun violence disruption programs.
Funds will be spent on social media analysts to identify people before they buy an illegal gun.
* More Bronx news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube
Submit a News Tip