| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Alain Delon | Manu Borelli | Luger P08 | Standard and "Artillery" model |
| Alain Delon | Manu Borelli | Winchester Model 1894 | - |
| Guy Delorme | A henchman | M1 Carbine | - |
| Hans Meyer | The Mercenary | Mauser HSc | - |
| Hans Meyer | The Mercenary | Ruby | Suppressed |
| Hans Meyer | The Mercenary | Beretta M38A | - |
| Hans Meyer | The Mercenary | M1 Carbine | In flashback |
| Joanna Shimkus | Laetitia Weiss | Winchester Model 1894 | - |
| Lino Ventura | Roland Darbont | Winchester Model 1894 | - |
| Lino Ventura | Roland Darbont | M1 Carbine | - |
| Lino Ventura | Roland Darbont | Model 24 Stielhandgranate | - |
| Serge Reggiani | The Pilot | Winchester Model 1894 | - |