The footage shows the masked male suspect walking through the parking lot of the Arco station in the 1411 block of East Del Amo Boulevard about 9:20 p.m, according to Carson police. He then enters the convenience store and points a black handgun at the clerk behind the counter.
Video from an overhead camera shows the robber taking between $300 and $500 from the cash register as the employee stands nearby with his hands in the air.
The clerk was unharmed, investigators said.
The suspect being sought was wearing a green ski mask, dark-colored pants and gloves, and a hooded sweatshirt.