Third Generation Colt Detective Special revolvers are the primary weapon of the Hong Kong Police Force Crime and Security Department officers in the film. Inspector Lau Kin-Ming (Andy Lau) is armed with this revolver at the end of the film before being disarmed by Chan Wing-Yan (Tony Leung).
Smith & Wesson Model 10 revolvers are the primary side arm of uniformed officers of the Hong Kong Police Force. The weapon is seen at the end of the film when Inspector Lau leaves the elevator to awaiting uniformed personnel. It seems as though some officers carry the standard version of the Model 10 while others are equipped with the heavy barreled variant.
Chan Wing-Yan (Tony Leung) uses a second generation Glock 17 in the final scene when he holds Inspector Lau Kin-Ming (Andy Lau) hostage on the roof top. A well known goof to the audience is when Yan draws his Glock on Lau, it clearly has no magazine, but in later shots his Glock has a magazine.
Error creating thumbnail: File missingLee-Enfield No.1 Mk.III* - .303 British. This was the main battle rifle of British and Commonwealth forces during the First World War, introduced in 1907 it has seen action throughout the 20th century. It would make sense for it to be in Hong Kong, a former British Colony.Error creating thumbnail: File missingLau drills with the SMLEError creating thumbnail: File missingCloser view of the fore end of the SMLE. The "ears" that protect the rear tangent sights are visible, but not the sights themselves, which might suggest that this is just a non-firing drill rifle.