The Evening Times understands the victim, named locally as Darren Higgins, was targeted while working for City Technical Services in a block of tenement flats, in Westmuir Street, Parkhead.
Local councillors and police are working together in a bid to reassure concerned residents, after the shooting at 1pm on Thursday.
Yesterday a policeman remained in place outside the tenement close.
Meanwhile, mums with prams, schoolchildren, and cyclists were going about their daily routine.
The bustling scene in Westmuir Street was a far cry from Thursday's events, which led to the area being cordoned off for hours as police searched for clues.
While the emergency services' cordon has been lifted, a police incident caravan remains in Westmuir Street.
But local councillor Frank McAveety, believes this is part of getting back to normal - and reclaiming the community.
He said: "People are very concerned that this kind of daylight attack can happen with no consideration for children who may have been nearby.
"The local police commander has reassured myself and local MP, Margaret Curran, that additional resources will be put into the area.
"Police patrols have been increased and the community can rest assured that everything is being done to keep them safe.
"Parkhead is a resilient community, but people have the right to live free from the fear of these crazy attacks."
Witnesses said Mr Higgins was standing in the close when the gunman burst in and shot him in the shoulder.
His condition is not known, but his injuries are not thought to be life-threatening.
Locals fear the shooting was part of a feud, which has involved a number of "tit-for-tat attacks".
The gunshot was heard in homes up and down the street on Thursday afternoon.
One neighbour, who did not wish to named, said: "I heard one very loud blast.
"Withing minutes, sirens were blaring and there was an ambulance and police with guns all over the place.
"Parkhead is known for having it's fair share of trouble. But you never expect guns to be involved -not on your doorstep."
In the hours after the shooting, white-suited forensic officers scoured the tenement close for clues.
Since the initial shock of the shooting, life has started to returned to normal.
As locals shopped at a convenience store across the street, one woman said: "Some folk have been talking about feuds and stuff like that.
"I just hope this is the end of it.
"We have to live here, and we should be able to get on with things, without people getting shot."
A Police Scotland spokeswoman, said: "Inquires are continuing."
Anyone with any information is asked to call Police Scotland on 101.