Running Scared (2006)

Mafia flunky Joey Gazelle (Paul Walker) is ordered to dispose of the guns that killed a pair of policemen. He hides them in his basement, where they are found by Oleg (Cameron Bright), the kid from next door, who uses one to shoot his brutal stepfather, a Russian mobster. The boy runs off, and Joey pursues him into the criminal underworld, desperate to retrieve the incriminating weapon. Meanwhile, corrupt detective Rydell (Chazz Palminteri) is following Joey's trail with his own agenda.