Narration + Gun silencer
I want to thank IMDB for providing the name of the uncredited narrator, Lionel Stander. He was Max on Hart to Hart and it bugged me that I couldn't put a name on a familiar voice. I was wrongly guessing William Demerest. The narrator had as many lines as anyone else in the film, but nowhere was his name included in the film credits.
Secondly, the hitman taped a silencer to the revolver. It is my understanding that a revolver cannot be silenced. You can only silence a hand gun with a magazine. But, I could be wrong. I really don't know what to be believe.
It just bothers me when Hollywood puts out bad information. Such as, they still put forth that nonsence about keeping a person on the phone for 3-5 minutes so they trace the call. Anyone, with caller ID knows that this is not true and hasn't been true for decades. Let's assume that we are in the last century and cell phones are not involved.