Investigators say nine members of the Pagan Motorcycle Club showed up at the store on West Main Street in West Norriton Township and confronted two rival gang members.
Joel Hernandez-Martinez, 36, of Bridgeport, Pa.; Justin Ray Noll, 34, of Reading, Pa.; and George Cwienk III, 51, of Bridgeport, Pa., will be tried in front of a jury.
According to investigators, members of the Unknown Bikers motorcycle gang stopped at the Wawa to gas up their bikes on October 17 at about 9:08 p.m.
Two minutes later, members of the Pagans were seen on surveillance video riding by, then pulling into the Wawa.
Some of the Pagans surrounded the Unknown Bikers, while other Pagans blocked any escape route, detectives said.
Shooting involving rival motorcycle gangs injures 6 outside Wawa
There was a physical altercation, in which the Pagans were allegedly seen trying to remove their rivals' "cuts," or gang colors.
Video shows Pagan gang members taking a "shooting platform stance," the D.A.'s office said.
Just one minute after the Pagans arrived, detectives said gunfire erupted.
One member of the Unknown Bikers gang was shot in the left forearm and thigh.
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The other three people shot were Pagans members Hernandez-Martinez, who was shot in the chest; Cwienk, who was shot in the ankle; and Noll, who was shot in the foot.
Jason Lawless, 45, of Bridgeport, Pa.; George Hripto, 50, of Bridgeport, Pa.; Manuel Baez-Santos, 34, of Norristown, Pa.; and Erik Rosenberger, 46, of East Greenville, Pa., have each pleaded guilty.
Two others had charges dismissed.