| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Andy Lau | Inspector Lau Kin-Ming | Smith & Wesson Model 10 | - |
| Andy Lau | Inspector Lau Kin-Ming | Colt Detective Special | - |
| Edison Chen | young Lau Kin-Ming | Smith & Wesson Model 10 | - |
| Edison Chen | young Lau Kin-Ming | Lee-Enfield No. 1 Mk III* | Possible drill rifle |
| Gordon Lam Ka-tung | Inspector B | Smith & Wesson Model 36 | - |
| Tony Leung Chiu Wai | Chan Wing-Yan | Glock 17 | - |