| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Jürgen Prochnow | Mattias Draeger | Walther PPK | "Absolution" (S2E09) |
| L.L. Cool J | NCIS Special Agent Sam Hanna | Heckler & Koch MP5A2 | "Empty Quiver" (S2E16) Suppressed, red dot scope and tactical light |
| Liane Balaban | Emma Mastin | Beretta 92FS | "Deliverance" (S2E10) |
| Linda Hunt | Hetty Lange | Smith & Wesson Model 36 | "Human Traffic" (S2E01) |
| Marisol Nichols | Tracy Keller | Maverick Model 88 shotgun | "Stand-off" (S2E06) |
| Marisol Nichols | Tracy Keller | SIG-Sauer P228 | Suppressor; "Stand-off" (S2E06) |
| Nico Evers-Swindell | Blonde Russian #1 | Browning Buckmark Camper | "Deliverance" (S2E10) |
| Nico Evers-Swindell | Blonde Russian #1 | Sa vz. 61 Skorpion | "Deliverance" (S2E10) |
| Renée Felice Smith | NCIS Intelligence Analyst Nell Jones | SIG-Sauer P239 | - |
| Vyto Ruginis | Arkady Kolcheck | Smith & Wesson Chief's Special CS40 | - |