There are still more than 1 million pistols in circulation chambered for the .32 ACP, although, today, it is generally considered to be an outdated defensive cartridge.
In the mid-19th century—just as in today’s world—citizens were clamoring for a concealable, reliable and affordable handgun. Ironically, inspired by the acceptance of his massive .44-cal. 1847 Walker and First Model 1848 Dragoon, the enterprising Sam Colt sensed an opportunity.
Chambered in .25 ACP, the Baby Browning micro handgun design was a popular option for a pocket pistol imported from Europe during the 1950s and 1960s.