A 17-year-old Surrey man is facing a pair of weapons charges for allegedly selling brass knuckles on SkyTrain.

The teen was arrested by Transit Police last week after members of the Crime Reduction Unit followed up on a Crime Stoppers tip that he was listing the brass knuckles on the free classifieds service, Craigslist, and selling them along the SkyTrain route in Surrey.

An undercover operation netted three sets of knuckles when the teen attempted to sell them. A fourth set was found at his home.

Brass knuckles are a prohibited weapon in Canada.

The youth has been charged with possession of a prohibited weapon and trafficking in a prohibited weapon.

Police say the teen, who cannot be named because he is a minor, is well-known to them.