Dramatic CCTV showing a gunman kicking down a door at a Colwick car business has been released by police.
The footage shows the man bursting into NG Car Sales and threatening staff with a revolver.
He struck on the afternoon of July 11 but has still not been traced.
PC James Primrose said: “It is vital we trace this man as soon as possible and we would appeal to anyone in the community who thinks they may have any information at all which could assist to get in touch.”
In the clip, the gunman marches in into the front door of the firm at around 5pm and heads towards an office.
He is spotted by a member of staff who slams the door in his face.
Photo: The gunman confronts a member of staff who bravely slams a door in his face.
But the gunman boots in the door with one kick and walks into the room. He hurries out empty-handed a few seconds later, then runs off down the street.
The man threatened the business manager who was able to flee out of a back door.
Photo: But the man gets through the door with one kick. He ended up fleeing empty-handed.
The gun was not used and nobody was injured in the incident.
But customers were at the business at the time of the incident who have not yet been traced. Officers are particularly keen to speak with them as they may have vital information.
PC Primrose added: “The customers are believed to be an Asian family – a man and possibly his wife and adult daughter – who had been at the business premises for around one hour prior to the offence.
“They were sat in the office at the time the offender entered but left the scene before police arrived.
“We would like these witnesses to come forward as they may be able to offer more information about the incident and the offender.”
The would-be robber is described as white, around 6ft 3ins to 6ft 5ins tall, with gaunt features and a prominent nose. He is believed to be aged in his early 30s and was wearing a black beanie hat, a black jacket and black bottoms.
PC Primrose added: “At this stage we do not know if the handgun was genuine or not. Whatever the case, the incident left the manager of the business extremely shaken.”
Anyone who can help is asked to contact Nottinghamshire Police on 101 quoting incident number 710 of 11 July, 2015, or Crimestoppers anonymously on 0800 555 111.
