sentences:  Colt and Browning responded to these criticisms with the introduction of the Colt Model 1905 pistol chambered in a new .452 in cartridge Browning designed—the .45 ACP.Whether or not the .45 ACP was overkill, European countries, with the exception of England who also had experience with fanatical opposition in the empire, opted for generally lighter calibers.One can only speculate on the type of commercial customer (excluding the military users) that would have purchased the Colt 1902 Sporting and Military Models