The NYPD and Queens District Attorney’s Office completed a major ghost gun take down this week.

Authorities say 27 of 33 guns recovered in a raid of four Queens homes on Tuesday were found to be ghost guns.

Ghost guns are untraceable firearms without serial numbers that are typically assembled at home after the parts are purchased online.

The takedown in Queens was the same day President Joe Biden announced a crackdown of the untraceable weapons in his State of the Union address.

Inspector Courtney Nilan of the NYPD's Intelligence Bureau says it's important to recover ghost guns at the source before it's too late.

"Before they get to the streets and before they are involved in crimes…before they're involved in shootings and before they hurt innocent victims,” she says.

Nilan says it's alarming how easy ghost guns are to get.

“You're not potentially getting stopped by police while you're crossing state lines, you're sitting at home ordering these parts and having them shipped,” Nilan says.

Queens District Attorney Melinda Katz says ghost guns are no longer an emerging threat but one that is already seriously impacting the city. She says she plans to find and prosecute those who use them with her Crime Strategies Intelligence Unit.

“We are using all of the expertise that our office offers to in order to make sure that we get them before they get out,” Katz says.

The NYPD says there’s been a 325% increase in ghost guns compared to this same period last year.

On Wednesday, four people were arraigned on criminal weapons charges after the 33 guns, 10,000 rounds of ammunition, silencers, bullet proof vests and 78 large capacity magazines were seized in Queens.

Two of the individuals are facing up to 25 years in prison if convicted.