| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Bruno Kirby | Peter Clemenza | Merwin Hulbert pocket revolver | - |
| Carmine Caridi | Carmine Rosato | Colt Detective Special | nickel |
| Joe Spinell | Willi Cicci | Colt Detective Special | - |
| Robert De Niro | Vito Corleone | Webley Mk VI | - |
| Tom Rosqui | Rocco Lampone | Colt Detective Special | - |
| Tom Rosqui | Rocco Lampone | Madsen M50 | - |