| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Bert Convy | Thomas Brown | Smith & Wesson Model 36 | "Charter for Death" (S6E03) |
| Don Porter | Jonathan Cavel | Smith & Wesson Model 36 | "Murder is a Taxing Affair" (S6E02) |
| Elliott Street | Arthur | Beretta Model 70 | "Draw Me a Killer" (S6E02) |
| James MacArthur | Danny "Danno" Williams | Serbian Mauser M1899 | "Hookman" (S6E01) |