Male
Edmond O'Brien can be seen with the following firearms in the following films:
| Character | Firearm | Notes |
|---|---|---|
| Frank Bigelow | Colt Detective Special | - |
| Character | Firearm | Notes |
|---|---|---|
| "Uncle Frank" Kelly | Unidentitifed pocket pistol | - |
| Character | Firearm | Notes |
|---|---|---|
| Freddie Sykes | Sharps 1874 Buffalo Rifle | - |
| Character | Firearm | Notes |
|---|---|---|
| Hank Fallon | Colt Detective Special | - |
| Hank Fallon | Steyr Mannlicher-Schoenauer | - |
| Hank Fallon | Winchester Model 1897 Riot Gun | - |