The Montgomery County Police Dept. claims it has obtained cell phone footage of the Jan. 16 incident which shows the suspect pointing a handgun right into the chest of an underage boy.

Cops say the "male juvenile victim" was skating around with friends around 2:25 PM "when he became involved in a verbal dispute with a passing motorist."

The female driver got out of her car and began arguing with the skateboarder, according to witnesses ... and a crowd began to form.

This is where things get crazy ...

Cops say two RANDOM women who just happened to be walking down the street at the time of the incident decided to get involved.

"One of the female suspects approached the juvenile victim and interjected herself in the dispute," cops say.

"The second female suspect went to a red Volvo that was parked in the area and drove it close to the dispute. She then gave a handgun to the first suspect, who used it to threaten the victim. Witnesses captured the incident on their cell phones."

In other words, the woman with the gun is NOT the same woman from the initial argument.

Fortunately, the woman did NOT fire the weapon and no one was injured,

Now, officials say they're looking for the gun-wielding suspect as part of an investigation into a possible 1st-degree assault with a handgun.

Cops are asking the public to help identify the suspects.