MAS HK 4
The HK 4 was issued by the German customs police (Zollpolizei) in .32 ACP for a time. There was also a exact copy made by the French MAS gun factory, for use by the (West) Berlin customs police. The agreement partitioning Berlin prohibited the use by authorities there of German made firearms. So they had French factories make them exact copies of the current German issue pistols. According to the Blue Book, about 500 of the MAS guns were imported into the USA in .22 and or .32.
Photo and information from: Roger