Two bandits held up a Brooklyn grocery store during a terrifying gunpoint robbery this morning.

The crooks stormed into Monumental Grocery store on Flatbush Avenue at 8:30 a.m. shocking a group of customers stuck inside, according to the owner Erasmos Perez, 55, who spoke to an employee manning the register when the mayhem unfolded.

“There were five customers inside when the thieves came in,” Perez said.

“They were armed with guns. My employee and the customers had no choice but to surrender.”

The thieves fled with $700. There were no injuries.

Police were viewing surveillance video of the incident, Perez said.