Colt 1903 Pocket Hammerless - .32 ACP
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seen from China
seen from China

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seen from United States
Colt 1903 Pocket Hammerless - .32 ACP
Star Spangled Springfield's
Another Prancing Colt
Colt 1903 Pocket Hammerless - .32 ACP
The 32 caliber 1903 pocket hammerless used a simple "blowback" mechanism. There was also a 1903 Colt pocket with a hammer that fired much more robust 38 ACP ammunition from a locked breech.
Model 1903 Springfield - .30-06
From Top to Bottom:
Colt M1902 Sporting - .38 ACP Colt M1911 A1 - .45 ACP Colt M1903 - .32 ACP Colt M1908 Vest Pocket - .25 ACP
Colt Model 1903 - .32 ACP