At about 8pm on Sunday 14 October 2012 the manager was outside the post office on Burnage Lane with his family when two masked men who were hiding behind a gate jumped out. One of the men pushed the manager towards the gate and pointed a gun in his face. The second man grabbed hold of his wife and dragged her by the hair.
They demanded the keys for the post office and one of them hit the man in the face with the gun.
He was pushed towards the door which caused the burglar alarm to activate. The offenders ran off empty handed.
The first offender is described as a black man, aged 25, 5ft 7in tall and of slim build. He wore a black hooded top with a white face covering.
The second offender wore all dark clothing.
Detective Constable Ed Lister from South Manchester CID, said: “Luckily no one was seriously injured, but the post office master and his family have been left deeply distressed.
“These men were hoping to access the post office and resorted to violence in their attempts to do this.
“If anyone has any information about who these two offenders may be, or if you were in the Burnage Lane area on Sunday evening and saw anyone acting suspiciously, please get in touch with us.
“We are committed to identifying the men responsible for this attempted robbery and bringing them to justice.”
Anyone with information should call South Manchester CID on 0161 856 4973 or contact the independent charity Crimestoppers anonymously on 0800 555 111.