Quiz of the Day - 17 November 2012

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The picture on the right hand side shows a top-break revolver with automatic extraction, which 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.

The design of the revolver is such that breaking it open for reloading also operates the extractor. This removes the spent cartridges from the cylinder. Firing the large .455 bore cartridge, there are among the most powerful top-break revolvers ever produced. Although the .455 calibre guns are no longer in military service, the .38/200 variant is still in use as a police sidearm in a number of countries, including India.

Identify the revolver.

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