The surveillance footage shows some people in the store fighting back, throwing chairs and other items at the thieves, but it did not stop them.
The robbery was over in less than a minute.
Three of the suspects were arrested late Friday night, but three others are still on the loose.
The only description of the suspects is that they were black men in their early 20s. Anyone with information is urged to call Fullerton police at (714) 738-6800.