A teenager was arrested in Altrincham yesterday after being found in possession of a knuckle duster.
Police had set up a knife arch at Altrincham Interchange as a means of detecting offensive weapons.
They saw two teenage boys trying to avoid officers and following a stop and search, seized the knuckle duster.
The 15-year-old was subsequently arrested on suspicion of possession of an offensive weapon.
Inspector Jon Ezard, of Operation Venture, said: "Every arrest made by our officers is a fantastic result for the team as it means that we have taken one more weapon off the streets of Greater Manchester.
"Operation Venture is working hard to reduce violent crime and whilst the team are being proactive in making arrests and patrolling the streets in your community, we also need your help and rely on intelligence provided to us by members of the public.
"If you know someone is carrying a weapon, please report it to us as soon as possible.
“We always take reports of this nature very seriously and will act on every piece of information given. It could help us save lives."
You can make a report by calling 101 or via the LiveChat Function on GMP's website: www.gmp.police.uk.
Alternatively call Crimestoppers anonymously on 0800 555 111, they also have an anonymous reporting function for 11-17 year olds via Fearless.org