Double Tap (2000)

What begins as an innocuous entry into a gun competition eventually steers Rick towards a path of fatal rivalry. With extensive training, Rick emerges as one of the finest shooters in town. Three years down the line, four members of a G4 unit have been murdered; the suspects clear out any possible evidence. A top CID officer, Miu, narrows the suspect list down to just Rick, whom he had met in the shooting arena on the final day of the gun competition three years before... —L.H. Wong