This silver grey revolver with five rounds of ammunition was found in a yard in Freida Lock Street, New Woodlands.
A 17-year-old suspected gang member was arrested in Lentegeur last Friday after he was found carrying a gun, say police.
The teenager, who was stopped and searched by Lentegeur police officers in Bamboo Street, faces a charge of illegally possessing a firearm, according to Lentegeur police station spokesman, Constable Navon van Houten.
• A man was arrested in New Woodlands on Saturday May 25 for illegal possession of a firearm after he ran from the police and allegedly discarded a loaded revolver in a Freida Lock Street yard.