How a Colt Model 1903 Pocket Hammer pistol works

The Colt Model 1903 Pocket Hammer was a short-recoil, semi-automatic pistol, designed by famous American arms designer John Browning. It was a compact version of the Colt Model 1902 Sporting Model pistol derived from the original Colt M1900. The Colt M1902 Sporting Model and 1903 Pocket Hammer model have significant differences to the military inspired Colt 1902 Military Model although they fire the same cartridge. Its design is in no way related to the Colt Model 1903 Pocket Hammerless or the FN Model 1903