Leigh, of Heppleton Road, New Moston, admitted manslaughter earlier this year, three weeks before a trial was due to begin.
On the night of April 16 the two men had been drinking at the Ladysmith pub together.
Robert Leigh, 23, lashed out at Stephen Shaw after the pair bickered in the street in the early hours.
accepted claims that Leigh had only intended to hit Mr Shaw once and not meant to cause significant injury.
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He said: "Death is always difficult for any family to cope with; it's even more difficult to deal with when it has come about from something than natural causes, perhaps it is even more difficult to accept when it has come about as the entirely unintended consequence of a flash of temper."
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hours later in hospital.
Senior Investigating Officer, Vinny Chadwick said: "This is yet another example of how badly wrong arguments can Nike Air Force One Womens Sneakers go when influenced by drink and how devastating a single blow can be.
An argument flared at 2am as the two men walked down Wellington Road, causing Leigh to hit his friend. The victim suffered serious head injuries and died Air Force 1 Shoes High Tops Pink
It comes after a number of incidents in the region where people have died or been seriously injured after they were thumped on a night out.
He rejected a defence suggestion that Leigh be given a suspended sentence, although he White Nike Air Force 1 Low
Manchester Crown Court heard the pair were close friends and that Leigh was remorseful for what he had done.
People who have been drinking can be more vulnerable to suffering serious head injuries if they are attacked.
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"No sentence I can pass will undo the terrible loss sustained by Mr Shaw's family at the same time I must remind myself that I'm dealing with a man for inflicting death as the wholly unintended consequence of what was a single blow."
A man who punched his pal and killed him during a night out has been jailed for three years.
Mr Shaw, a 57 year old sheet metal worker and dad of Air Force Shoes High Tops
Greater Manchester Police are running a campaign called 'One Punch' that warns of the dangers a single blow can cause.
Late night argument in Ashton street leads man
Jailing Leigh, Judge Andrew Gilbart QC said the victim had 'done nothing which even begins to justify the use of violence' on the night of his death.
Judge Gilbart described Mr Shaw as a man much loved by his family, who were too upset to speak of their ordeal after the hearing.
two from Oldham, died after hitting his head on the floor in the attack, at Wellington Road, Ashton under Lyne.
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