Authorities seized more than 110 machine guns, assault rifles and other weapons during the two operations in the past 24 hours.
Investigators said 13 suspects were arrested in East Harlem over the last 24 hours, and three others are still at large.
In what was labeled the "Mickey Mouse Trap," 64-year-old Mitchell "Mickey" Collins and three others allegedly sold 88 firearms to undercover officers. In other instances, an AK 17 assault rifle was bought by an undercover officer for $1,600 and a 32 caliber Smith and Wesson was bought for $400.
Many of the guns were funneled north out of South Carolina from pawn shops and gun dealers, officials said.
Police said Collins' arrest history dates to 1968, when he was charged with possession of a loaded firearm. He has been in prison for attempted murder, weapons possession and drug sales.
The other sting was dubbed Operation Carver. The suspects range in ages from 17 to 23. They have been living in the George Washington Carver Houses in East Harlem. They suspects allegedly sold 41 guns and a bullet resistant vest to an undercover officer. Two were used in shootings - one in the Bronx in 2003 and the other in a gunfight in the Cypress Houses in Brooklyn.
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