“May I suggest that Mr. Bond be armed with a revolver?” (1956)
Interesting.  Revolvers would be good for a spy as they don't eject shell casings, however they are quite loud, which led me to ponder: are there suppressors for revolvers?<p>I did a quick search, and the first result was very interesting!<p><a href="https://www.guns.com/news/2019/08/08/gun-question-can-you-put-a-silencer-on-a-revolver" rel="nofollow">https://www.guns.com/news/2019/08/08/gun-question-can-you-pu...</a><p>Edit: more interesting pictures <a href="https://www.thefirearmblog.com/blog/2016/06/15/why-cant-revolvers-be-suppressed-or-can-they/" rel="nofollow">https://www.thefirearmblog.com/blog/2016/06/15/why-cant-revo...</a>