Colt "New Service" Revolver
The next official military pistol acquired by Canada, to equip the Second Contingent sent for Boer War service, was also a Colt product, this particular model having been introduced by the company in 1898. A total of 943 were acquired.
Configuration of Canadian-issue arms: Double-action revolver; blued finish; cast black grips; 5.5" barrel; chambered for .45 Colt cartridge; 6 round capacity; cylinder swings out to left side for loading and extraction. In service 1900-1928. (The Colt New Service Revolver - chambered in .455 Eley - was also adopted as the official sidearm of the RNWMP in 1904, remaining in service with the Force until 1954.)
http://www.canadiansoldiers.com/weapons/pistols.htm