A rising Boston gangster (Ben Barnes) endangers those around him when he starts to make moves without the knowledge of his boss (Harvey Keitel).
Unfortunately the movie By the Gun is not yet available on HBO Max.
| Directing | James Mottern | Director |
| Writing | Emilio Mauro | Writer |
| Production | Matthew E. Chausse | Producer |
| Production | Emilio Mauro | Producer |
| Sound | Nathan Whitehead | Music |
| Camera | Jimmy Lindsey | Director of Photography |
| Editing | Banner Gwin | Editor |
| Production | Jessica Kelly | Casting |
| Art | Jennifer Gerbino | Production Design |
| Art | Kevin C. Lang | Set Decoration |
| Art | Dara Smith | Set Decoration |
| Costume & Make-Up | Honah Lee Milne | Costume Design |
| Costume & Make-Up | Nichole Pleau | Makeup Department Head |
| Costume & Make-Up | Liz McCracken | Makeup Artist |
| Art | Michael McNulty | Art Department Coordinator |
| Art | Shann Whynot-Young | Leadman |
| Art | Melissa Cooperman | Set Decoration Buyer |
| Sound | Yagmur Kaplan | Sound Re-Recording Mixer |
| Crew | Paul Marini | Stunt Coordinator |
| Lighting | Jesse Goldberg | Gaffer |
| Lighting | Brandon J. Meadows | Gaffer |
| Camera | Seacia Pavao | Still Photographer |
| Editing | Rain Valdez | Digital Intermediate |
| Editing | Daniel Hasenstaub | Digital Intermediate |
| Sound | Nevin Seus | Music Editor |
| Directing | Betsy Kuehn | Script Supervisor |
| Production | Eoin Walsh | Location Manager |
| Production | Jenna DePaul | Co-Producer |
| Production | Colin Walsh | Line Producer |
| Production | Raj Brinder Singh | Executive Producer |
| Production | Vishal Rungta | Executive Producer |
| Production | Ankur Rungta | Executive Producer |
| Production | Zülfikar Güzelgün | Co-Executive Producer |
| Production | Kevin Scott Frakes | Executive Producer |
| Production | Francesco Di Silvio | Executive Producer |
| Production | Nicholas Delmenico | Line Producer |
| Production | Philippe Chausse | Executive Producer |
| Production | Steffen Aumueller | Co-Executive Producer |
| Costume & Make-Up | Brenda McNally | Hair Department Head |
| Costume & Make-Up | Shayna Passaretti | Key Hair Stylist |
| Directing | Anthony Ambrosino | First Assistant Director |
| Directing | Ramses del Hierro | First Assistant Director |
| Directing | Nicholas Delmenico | Second Assistant Director |
| Directing | Tim LaDue | Second Assistant Director |
| Art | Beth Anderson | Assistant Property Master |
| Crew | Peter Rippe | Carpenter |
| Art | Aimee Butterfield | Property Master |
| Art | Shadya H. Ballug | Set Dresser |
| Art | Dawn Beagan | Set Dresser |
| Art | John Ryder | Set Dresser |
| Sound | Ryan Baker | Boom Operator |
| Sound | Josh Kupanoff | Foley Editor |
| Sound | Matthew Whitehurst | Foley Editor |
| Sound | Jason Fyrberg | Sound Mixer |
| Sound | Aaron Bouchard | Sound Mixer |
| Visual Effects | Thomas Tannenberger | Visual Effects Supervisor |
| Costume & Make-Up | Robin Chalfin | Tailor |
| Costume & Make-Up | Elizabeth Clifford | Wardrobe Supervisor |
| Camera | David C. Romano | Best Boy Grip |
| Camera | Melanie Patten | Best Boy Grip |
| Camera | Toshadeva Palani | Camera Intern |
| Camera | Adam E. Oliver | Digital Imaging Technician |
| Lighting | Aaron Tyburski | Electrician |
| Camera | Andrew Bell | Grip |
| Camera | Peter Rippe | Grip |
| Camera | Edwin Rubio | Grip |
| Camera | Woody Bell | Key Grip |
| Camera | Paul Bulgin | Key Grip |
| Camera | A. Kyo Moon | First Assistant Camera |
| Lighting | Chuck Rudolph | Lighting Technician |
| Camera | Dan Mason | Second Assistant Camera |
| Camera | Mark Killian | Second Assistant Camera |
| Camera | Tommy Fitzgerald | Second Unit Director of Photography |
