The following guns were used in the 1988 comedy film A Fish Called Wanda:
Walther P5
Otto (Kevin Kline) uses a Walther P5 throughout the film, using it suppressed and unsuppressed between scenes.
Ruger Mini-14
When trying to kill Ms. Coady (Patricia Hayes), Ken (Michael Palin) uses a suppressed Ruger Mini-14, but accidentally kills one of her dogs.
Double Barreled Sawed Off Shotgun
George Thomason (Tom Georgeson) uses a Sawed Off Shotgun during the diamond heist.