| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Donnie Wahlberg | Mr. Grey | Heckler & Koch MP5A3 | w/laser sight |
| Earl Hindman | "Mr. Brown" | Colt Detective Special | - |
| Earl Hindman | "Mr. Brown" | Smith & Wesson M76 | - |
| Edward James Olmos | Det. Anthony Piscotti | Smith & Wesson Model 10 | snub |
| Hector Elizondo | Mr. Grey | Smith & Wesson M76 | - |
| Jerry Stiller | Lt. Rico Patrone | Colt Detective Special | - |
| Martin Balsam | Mr. Green | Colt Detective Special | - |
| Richard Schiff | Mr. Green | Beretta 92FS | - |
| Richard Schiff | Mr. Green | Heckler & Koch MP5A3 | laser sight |
| Robert Shaw | Mr. Blue | Browning Hi-Power | With spur hammer and target sights |
| Robert Shaw | Mr. Blue | Star Model B | With blued finish and wooden grips |
| Robert Shaw | Mr. Blue | Smith & Wesson M76 | With 36-round magazine and stock unfolded |
| Tara Rosling | Ms. Brown | Beretta 92FS | - |
| Tara Rosling | Ms. Brown | MP5A3 | - |
| Vincent D'Onofrio | Mr. Blue | Heckler & Koch MP5A3 | laser sight |
| Vincent D'Onofrio | Mr. Blue | M1911A1 | - |
| Walter Matthau | Lt. Zachary Garber | Smith & Wesson Model 10 | . |