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.
| Writing | Emilio Mauro | Writer |
| Directing | James Mottern | Director |
| Production | Matthew E. Chausse | Producer |
| Art | Dara Smith | Set Decoration |
| Camera | Seacia Pavao | Still Photographer |
| Lighting | Brandon J. Meadows | Gaffer |
| Editing | Daniel Hasenstaub | Digital Intermediate |
| Sound | Yagmur Kaplan | Sound Re-Recording Mixer |
| Art | Melissa Cooperman | Set Decoration Buyer |
| Sound | Nevin Seus | Music Editor |
| Directing | Betsy Kuehn | Script Supervisor |
| Production | Jessica Kelly | Casting |
| Crew | Paul Marini | Stunt Coordinator |
| Lighting | Jesse Goldberg | Gaffer |
| Art | Kevin C. Lang | Set Decoration |
| Costume & Make-Up | Nichole Pleau | Makeup Department Head |
| Camera | Jimmy Lindsey | Director of Photography |
| Editing | Rain Valdez | Digital Intermediate |
| Sound | Nathan Whitehead | Music |
| Editing | Banner Gwin | Editor |
| Art | Michael McNulty | Art Department Coordinator |
| Art | Jennifer Gerbino | Production Design |
| Costume & Make-Up | Honah Lee Milne | Costume Design |
| Art | Shann Whynot-Young | Leadman |
| Production | Emilio Mauro | Producer |
| Costume & Make-Up | Liz McCracken | Makeup Artist |
| Production | Eoin Walsh | Location Manager |
| Production | Raj Brinder Singh | Executive Producer |
| Production | Ankur Rungta | Executive Producer |
| Production | Philippe Chausse | Executive Producer |
| Production | Francesco Di Silvio | Executive Producer |
| Production | Colin Walsh | Line Producer |
| Production | Zülfikar Güzelgün | Co-Executive Producer |
| Production | Jenna DePaul | Co-Producer |
| Production | Kevin Scott Frakes | Executive Producer |
| Production | Vishal Rungta | Executive Producer |
| Production | Steffen Aumueller | Co-Executive Producer |
| Production | Nicholas Delmenico | Line Producer |
| Sound | Aaron Bouchard | Sound Mixer |
| Costume & Make-Up | Robin Chalfin | Tailor |
| Sound | Josh Kupanoff | Foley Editor |
| Camera | David C. Romano | Best Boy Grip |
| Camera | Paul Bulgin | Key Grip |
| Lighting | Chuck Rudolph | Lighting Technician |
| Camera | Melanie Patten | Best Boy Grip |
| Costume & Make-Up | Shayna Passaretti | Key Hair Stylist |
| Directing | Ramses del Hierro | First Assistant Director |
| Sound | Matthew Whitehurst | Foley Editor |
| Art | Beth Anderson | Assistant Property Master |
| Crew | Peter Rippe | Carpenter |
| Costume & Make-Up | Brenda McNally | Hair Department Head |
| Directing | Anthony Ambrosino | First Assistant Director |
| Directing | Tim LaDue | Second Assistant Director |
| Art | Aimee Butterfield | Property Master |
| Sound | Jason Fyrberg | Sound Mixer |
| Art | John Ryder | Set Dresser |
| Sound | Ryan Baker | Boom Operator |
| Art | Dawn Beagan | Set Dresser |
| Camera | Peter Rippe | Grip |
| Camera | Mark Killian | Second Assistant Camera |
| Directing | Nicholas Delmenico | Second Assistant Director |
| Art | Shadya H. Ballug | Set Dresser |
| Camera | Toshadeva Palani | Camera Intern |
| Camera | Andrew Bell | Grip |
| Camera | Tommy Fitzgerald | Second Unit Director of Photography |
| Lighting | Aaron Tyburski | Electrician |
| Visual Effects | Thomas Tannenberger | Visual Effects Supervisor |
| Costume & Make-Up | Elizabeth Clifford | Wardrobe Supervisor |
| Camera | A. Kyo Moon | First Assistant Camera |
| Camera | Dan Mason | Second Assistant Camera |
| Camera | Woody Bell | Key Grip |
| Camera | Adam E. Oliver | Digital Imaging Technician |
| Camera | Edwin Rubio | Grip |
