An alarming seizure at the Queenston-Lewiston Bridge in November.
Border agents reporting a weapons seizure that saw a gas injection system knife confiscated.
The American resident was arrested for failing to declare a prohibited weapon.
He was subsequently charged with failing to report goods, making false statements and attempting to evade payment of duties and taxes.
Damon Cawley pleaded guilty to the charges in December and was sentenced to time served plus a day and a $500 fine.
The knife was kept by the crown with no terms for release.