The father and friends of Halton McCollin who was shot dead in Stretford in 2008 are urging people to "Give up the Gun" as Greater Manchester Police launches a firearms surrender.
While there are designated police stations for the surrender, the public can go to any police station and they will accept any and all firearms and ammunition.
Many firearms are held in innocence and ignorance of their illegality or are overlooked and forgotten in people's homes.
"I appreciate these guns are not used for crime but the less guns in the county the less likely they are to fall into the wrong hands".
Weapons should be handed to police station front counter staff.
Items can not be handed in at police headquarters, Aykley Heads.
"In the past they may have been concerned as regards what to do with these weapons".
Richard Kennett, Firearms Licensing Manager for Norfolk and Suffolk Constabularies, said: "Some people may have un-registered, old weapons that they have forgotten about, or have received one through inheritance that they no longer use, or that they don't know what to do with".
"But when they're handed down to the next generation, either through bereavement or simply passing them down to the next generation, that person doesn't need them, hasn't got the required licence so that makes them an illegal weapon".
"The fight against gun crime is stronger than ever".
Superintendent Glyn Fernquest said: "Whilst we don't experience a high level of gun crime in Gwent, we are joining forces with our partners in Wales and across the United Kingdom to support the national NABIS Fire Arm Surrender 2017".
During the two-week campaign, those surrendering firearms will not face prosecution for the illegal possession upon surrender and can remain anonymous.
"One weapon off the streets is one less that can be used to harm or threaten our communities".
'You don't have to give your name or address, we just want more guns out of harm's way. We'd also encourage anyone who knows about weapons being kept illegally to tell us anonymously where there are and potentially help save a life. "Each firearm we retrieve has the potential to save a life, so do the right thing and surrender your weapon".
She added: "While crimes involving firearms in the Thames Valley region are rare, we know that every firearm poses a potential threat if they are not licensed and stored safely".
Tim Passmore, the Police and Crime Commissioner for Suffolk Constabulary, said: "I fully support the Constabulary's firearms surrender. This way you can be confident you have got rid of a firearm safely".
The amnesty comes less than a month after national figures revealed the number of crimes involving firearms in England and Wales increased by 27% to 6,696 in the year ending June 2017.
During the last national firearms surrender in 2014 more than 6,000 items were handed in to police. This includes replica firearms, air weapons, BB guns, imitation firearms, component parts and other ballistic items now lawfully held.
NABIS and police forces across the United Kingdom are working with partners such as the Crown Prosecution Service (CPS) and the Local Government Association (LGA), to ensure the surrender fortnight of action is a success.
If someone is unable to travel to a police station they should contact police via 101 and arrange for the firearm to be collected.