The incident happened Wednesday night around 9:15, along Olney Avenue near Wister Street.
Three of the young men arrive in a newer model of a white pickup truck, and the other three get out of a white Toyota RAV.
Video shows them waiting in the entryway of the grocery store, then jumping the 30-year-old victim in the parking lot, repeatedly beating him. He was treated for injuries.
Anyone who can identify the men is asked to contact police, either by calling 911 or 215-686-8477. You can also text a tip to 773847.