webley revolver
The Webley Revolver (also known as the Webley Break-Top Revolver or the Webley Self-Extracting Revolver) was, in various marks, the standard issue service pistol for the armed forces of the United Kingdom, the British Empire, and the Commonwealth from 1887 until 1963.
It had several models (each an improvement of the previous) and had good accuracy and stopping power.