IT has been 10 years since the murder of a postmasters son took place at a Worcestershire post office.

Craig Hodson-Walker was gunned down at 8.21am on Friday, January 9, 2009 after trying to ward off sledgehammer and handgun wielding robbers in his parents' shop in Fairfield.

The dramatic events recently featured in a BBC documentary, which reconstructed the haunting story of the automatic weapon used in the Bromsgrove murder - known as Gun No.6 - which has been used in at least 11 different shootings.

It was the first time images of the gun being fired had been aired on television.

The gun has never been found but three men have been killed by its bullets and 10 men involved in those crimes have been jailed for at least 30 years each.

Christopher Morrissey, 32, his brother Declan Morrissey, 34, and Anselm Ribera, 34, were jailed for life with a minimum of 34 years each by Mr Justice Colman Treacy who branded them “parasitic criminals".

Tearfully talking about the death of her son in the documentary, his mum, Judy, said: “I often think: ‘Why would somebody think it’s perfectly normal to pick up a gun?’ and that question needs to be answered somewhere."

She later added: “(Craig) protected us, but we couldn’t do the same for him.

“That is the difficult bit. I just believe he stopped evil that day.”

Craig attempted to use a cricket bat to deal with the intruders while wearing only his boxer shorts before he was shot and is then seen lying on the floor behind shelving.

His father Ken survived being shot in the leg.

He said when the robbers entered the post office, brandishing the gun, he didn't quite believe it was real.

Ken said: “It doesn’t get any easier. It takes a long time to get over stuff. Things like that never go away.”

Reviewing ballistic forensic data from multiple shootings in the early 2000s, West Midlands Police made a list of the ten most wanted guns being used most frequently in crimes.

It was in 2006 where the first story regarding the infamous 'Gun No.6' was revealed.