| Actor | Character | Firearm | Notes |
|---|---|---|---|
| George Peppard | Major Eugene "Sam" Denton | Smith & Wesson Model 19 | With 4" barrel and factory wooden grips |
| Jan-Michael Vincent | 1st Lieutenant Jake Tanner | Smith & Wesson Model 19 | With 4" barrel and factory wooden grips |
| Paul Winfield | Keegan | M16 | . |
| Robert Donner | The first of the "Mountain Men" | Unidentified revolver | - |