But in the Iconic movie poster Sean Connery is holding a Webley Pellet Pistol

And the suppressor is a "Carswell". It's the same set up Jack Higgins character Sean Dillon prefers.
I picked up a used Kel Tec P 32 recently, to echo what M25 said, perhaps the owner found it to small, small guns are much harder to shoot than larger guns because space is so limited and the parts are necessarily smaller, It is almost physically impossible for me to accurately fire an NAA revolver, it is just to darn small for my hand .
It is also possible that they come from the estate of some one like us and you are missing some real good guns .