Politiecommissaris Tanzi is het zat dat criminelen hun straf ontlopen door het falende justitiële systeem in Italië. Hij wil dergelijke misdadigers zelf gaan straffen. Hoewel collega's en meerderen hem trachten te stoppen gaat Tanzi als een eenmansleger keihard deze criminelen te lijf.
Nee, helaas is Roma a mano armata nog niet beschikbaar op Netflix in Nederland.
| Directing | Umberto Lenzi | Director |
| Writing | Dardano Sacchetti | Writer |
| Sound | Franco Micalizzi | Original Music Composer |
| Costume & Make-Up | Franco Carretti | Costume Design |
| Costume & Make-Up | Marcello Longhi | Hairstylist |
| Editing | Maurizio Alabiso | Assistant Editor |
| Art | Francesco Bidoccu | Assistant Production Design |
| Camera | Mario Pastorini | Assistant Camera |
| Directing | Mirella Malatesta | Script Supervisor |
| Production | Luciano Martino | Producer |
| Editing | Daniele Alabiso | Editor |
| Art | Giorgio Bertolini | Production Design |
| Crew | Gino Vagniluca | Special Effects |
| Writing | Umberto Lenzi | Story |
| Production | Marcello Tagliaferri | Unit Manager |
| Camera | Mario Sabatelli | Still Photographer |
| Costume & Make-Up | Massimo Giustini | Makeup Artist |
| Production | Luciano Catenacci | Production Supervisor |
| Directing | Goffredo Unger | Assistant Director |
| Crew | Gino Vagniluca | Armorer |
| Camera | Federico Zanni | Director of Photography |
| Crew | Terry Levene | Presenter |
| Production | Mino Loy | Producer |
| Lighting | Roberto Belli | Electrician |
| Camera | Giuseppe Gabrielli | Key Grip |
| Costume & Make-Up | Teodora Bruno | Hairstylist |
| Production | Lamberto Palmieri | Production Supervisor |
| Camera | Mario Sbrenna | Camera Operator |
| Costume & Make-Up | Davide Cenci | Costume Design |
| Production | Sergio Borelli | Production Manager |
| Camera | Elio Polacchi | Camera Operator |
| Costume & Make-Up | Vanda Pruni | Costume Design |
| Costume & Make-Up | Anna Rasetti | Seamstress |
| Writing | Dardano Sacchetti | Screenplay |
| Crew | Goffredo Unger | Stunts |
| Crew | Sergio Testori | Stunts |
| Crew | Anna Maria Zamperla | Stunt Double |
| Crew | Riccardo Petrazzi | Stunts |
| Crew | Valerio Colombaioni | Stunts |
| Crew | Giuseppe Monteverdi | Stunts |
| Crew | Benito Pacifico | Stunts |
| Crew | Renzo Pevarello | Stunts |
| Crew | Ottaviano Dell'Acqua | Stunts |
