Patrons got the gun and restrained the man until police arrived.
Batra, who reopened the bar tonight , described the patrons as heroes, particularly a man who first pounced on the gunman, before others came to his aid.
The man indicated to Batra he had mixed feelings about being called a hero.
"He said 'everyone's calling me a hero, but I only did it for my family, because my family was there'."
Batra also owns the Ruakaka Tavern, where he and his wife were held up by a knife-wielding robber at closing time a year ago, he said.
"It's unbelievable what's going on with these people doing things."
When he bought the Tikipunga Tavern last month he thought 'it's not a safe pub', but he was making improvements, including installing floodlights to the car park, DNA sprays and more security cameras.
Those installed already had shown the two men allegedly responsible for Wednesday's armed robbery loitering in bushes behind the tavern for four hours before the incident occurred, Batra said.
Police, who earlier this week advised people against intervening in dangerous situations, said tonight the second man had still not been found.
An injured 25-year-old man appeared before a Justice of the Peace in a bedside court hearing at Whangārei Hospital on Thursday.
He was charged with being armed with an offensive weapon — a sawn-off pistol grip shotgun — and robbing the Tikipunga Tavern of two cash registers. He was remanded in custody to May 8.