BROOKLYN - Cops need help finding the man who robbed a Flatbush store at gunpoint. 

Police released a surveillance image of the suspect, who they say walked into a Family Dollar at around 4 p.m. Tuesday and pulled out a gun. 

The man fled the scene with about $300, and had his weapon hidden in a New York Rangers drawstring bag. 

He's believed to be about 35 years old, 5 feet 10 inches tall and 160 pounds.