One of the 10 crooks who brazenly robbed an underground weed party raid in NoMad waved around an assault rifle as 40 guests were forced to cough up their cash and valuables, police said Wednesday.

Cops are still looking for the 10 gun-toting robbers who burst into the exclusive private event on Broadway near W. 28th St. about 10 p.m. Monday.

The unlicensed weed party was in full swing when the crew barged in flashing weapons.

One crook brandished an M4 assault rifle, threatening terrified guests as they were forced to hand over their belongings.

Crook brandishes assault rifle during NYC underground weed party holdup
The underground gig was in full swing on Broadway near W. 28th St. when the gunmen burst into the place waving their pistols around about 10 p.m. Monday, cops said. (Google)

The crooks robbed the guests of their cash, wallets, jewelry, and cell phones before running off.

Cops were scouring the area for surveillance footage that could help them track the 10 suspects.