A crook was caught on surveillance video robbing a Brooklyn 7-Eleven at gunpoint over the weekend — sticking up one clerk while another worker continued to re-stock the shelves behind him, apparently unaware of the heist in progress.

The thug went into the convenience store on Knapp Street in Gerritsen Beach about 11:40 p.m. Sunday and walked up to the counter clerk with a case of Redbull and a roll of paper towels, police said.

He is seen on the video with a gun in his right hand aimed at the clerk, who begins emptying cash from the register into a black bag on the counter. The worker then actually hands over a couple of plastic bags so the suspect can bag his items.

All the while, another store employee is behind the perp changing the items in a food case and doesn’t appear to notice the man with the gun.

The assailant then flees from the store with the cash and goods.