A gunman wearing a fake beard open fired on two rookie cops in New York City, sending a bullet flying into a nearby dental office packed with kids, authorities said.

The burst of gunfire erupted at 3:55pm local time Friday near 37th Road and 76th Street in Jackson Heights, where the officers on foot patrol were alerted to the oddly-dressed, bearded man wearing a dark trench coat, hat and sunglasses and acting suspiciously, sources said.

The cops asked him to take his hands out of his pockets and tried to force him to comply, one source said.

When he did, he had a deadly surprise for the officers.

“They kept asking him to take his hands out of his pocket, and after a struggle, he pulled one out and just opened fire point-blank,” a source said.

Police officials said two shots were fired — with one whizzing past the children in the nearby clinic.

One “went into the dentist’s office that was filled with kids,” a source said.

Another source called the mayhem “a cop’s worst nightmare,” sending the rookies diving for cover as the lunatic bolted, shedding his phony beard, sunglasses and hat along the way. The shooter remained at large Friday night.

The neighborhood filled with cops after the stunned officers called for backup, limo driver Francisco Sala said.

The suspect was described as a male in his 30s standing about 5’9″.

Investigators released a surveillance video Friday night of the suspect without his disguise.

(Source: MyFoxNY)