| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Allison Janney | C.J. Cregg | Smith & Wesson Model 686 | "We Killed Yamamato" (S3E21) |
| Mark Harmon | USSS Agent Simon Donovan | Smith & Wesson Model 686 | "We Killed Yamamato" (S3E20) |
| Mark Harmon | USSS Agent Simon Donovan | SIG-Sauer P226 | "Posse Commitatus" (S3E21) |
| Mark Harmon | USSS Agent Simon Donovan | Beretta 84B | "Posse Commitatus" (S3E21) |
| Taye Diggs | USSS Agent Wesley Davis | SIG-Sauer P226 | "Commencement" (S4E22) |
| Taye Diggs | USSS Agent Wesley Davis | Glock 34 | "Commencement" (S4E22); continuity error |