Detective Tellis (Jason Patric) carries a Beretta 92FS Inox as his sidearm. It is seen and used extensively throughout the film.
Colt 1911 Series 70
After losing his Inox, Tellis also uses a Colt M1911, Series 70 at the end of the film, which he finds in his partner's glove compartment.
Colt King Cobra
Detective Oak (Ray Liotta) carries a Colt King Cobra revolver as his sidearm. Oak later finds the Colt King Cobra belonging to his dead partner Calvess (Alan Van Sprang).
Oak's Revolver
During a scene in which Oak fires four rounds to frighten two suspects, he uses this revolver instead of his Colt King Cobra. Oak then produces Calvess's Colt King Cobra revolver and shows it to the suspects. It is not shown what happens to the revolver Oak uses during this scene.
Smith & Wesson 686
Calvess's revolver appears as a Smith & Wesson Model 686 in flashback sequences. This is despite the fact that Oak clearly points to a Colt King Cobra and identifies it is Calvess's gun in parts of the film.
Glock pistol
During a flashback Oak is seen carrying a Glock pistol, possibly a Glock 17.
Sheps (Bishop Brigante) pulls a concealed Beretta 950 Jetfire on Tellis and Oak, a poor decision on his part. Calvess is also seen firing what appears to be a Jetfire in flashback sequences.
Mossberg 500 Cruiser
A 6-shot Mossberg 500 Cruiser is discovered by Oak and Tellis at a grizzly crime scene, and proves to be a vital clue.
Pocket Guns
When searching Shep's house, Tellis finds several small pocket pistols hidden in his refrigerator next to the bagels and doughnuts. The pistols are in plastic baggies and are only visible for a brief moment.
Flashback Revolver
This revolver is seen during a flashback of Calvess's murder.
Darnell's Machine Pistol
Darnell (Busta Rhymes) uses a submachine gun or machine pistol during the film. Due to the fact that you never see the weapon up close it is extremely hard to identify.