Jim Killian arrives in a small Arizona town hoping to establish a peaceful life as the local preacher, but he soon finds himself in the middle of a feud between sheep ranchers and cattlemen. Leloopa, a young Native American woman, pleads for Killian's help after her shepherd father is hung by Coke Beck, the vicious son of the head cattle rancher. Killian must weigh his actions carefully lest he perpetuate the cycle of retribution and revenge.
Unfortunately the movie Heaven with a Gun is not yet available on HBO Max.
| Editing | Dann Cahn | Editor |
| Production | Frank King | Producer |
| Camera | Fred J. Koenekamp | Director of Photography |
| Sound | Johnny Mandel | Original Music Composer |
| Production | Maurice King | Producer |
| Sound | Paul Francis Webster | Original Music Composer |
| Directing | Lee H. Katzin | Director |
| Production | Herman King | Associate Producer |
| Art | Matty Azzarone | Assistant Property Master |
| Art | Frank Paul Sylos | Art Direction |
| Directing | William P. Owens | Assistant Director |
| Art | Jack N. Young | Location Scout |
| Sound | Franklin Milton | Recording Supervision |
| Crew | Neil Summers | Stunts |
| Crew | Bill Coontz | Stunts |
| Costume & Make-Up | John Truwe | Makeup Artist |
| Art | George W. Davis | Art Direction |
| Costume & Make-Up | Mary Keats | Hairstylist |
| Production | Sam Manners | Unit Production Manager |
| Crew | Steve DeFrance | Stunts |
| Writing | Richard Carr | Writer |
| Production | Lindsley Parsons Jr. | Assistant Production Manager |
| Crew | Gerry Searle | Stunts |
| Crew | Al Wyatt Sr. | Stunts |
| Art | Henry Grace | Set Decoration |
| Costume & Make-Up | William Tuttle | Makeup Artist |
| Art | Don Greenwood Jr. | Set Decoration |
| Crew | Casey Tibbs | Stunts |
| Crew | Bill Catching | Stunts |
| Production | Red Hershon | Associate Producer |
| Art | Frank Wesselhoff | Painter |
| Sound | Albert Harris | Orchestrator |
| Crew | David S. Cass Sr. | Stunts |
