The armed robbery happened at 4.10pm. The men went into the post office and threatened staff with a handgun demanding money.
They stole a quantity of cash and then fled on a red and black Ninja Kawasaki motorbike along Shaw Hall Bank Road. The staff were left shaken and shocked but no one was injured during the robbery.
Police are currently searching for the two two men who were both wearing black clothing and black motorbike helmets with the visors down.
Detective Sergeant John Coleman, based at Oldham police station said: “Staff at this post office have been left extremely distressed following this robbery and we have a number of officers working to identify the two men responsible. Just after 4pm would have been quite a busy time in this area as people would have been making their way back home after the school run. I would encourage anyone who saw this motorbike and the two men either before the robbery, or after it, to please get in touch and tell us what you saw. You may think your information is not important, but it could be vital to our investigation. Please get in touch”
Anyone with information is asked to contact officers at Oldham police station on 0161 856 8985 or call Crimestoppers anonymously on 0800 555 111.