| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Bokeem Woodbine | Byron Middlebrook | Cobray M11/9 | "Pro Per", (S3E02) |
| Holt McCallany | Det. John Hagan | Ruger GP100 | 3" barrel version |
| Jeffrey Donovan | Todd Kendrick | Heckler & Koch USP | "Nothing to Lose" (S3E16) |
| Khandi Alexander | Dr. Alexx Woods | SIG-Sauer P229 | "Crime Wave" (S3E08) |
| Sofia Milos | Det. Yelina Salas | Smith & Wesson 6904 | - |