The .32 ACP (Automatic Colt Pistol) pistol cartrige is a semi-rimmed, straight-walled cartridge developed by firearms designer John Browning, for use in the FN M1900 semi-automatic pistol. It is also known as the 7.65x17mm Browning SR or 7.65 mm Browning. Introduced in 1899 by Fabrique Nationale, the cartridge was first used in the Browning M1900.