Sergey Korovin designed the first 7.65 mm caliber military pistol around 1922, while working at the famous Tula arms factory TOZ.
The following year the gun was approved for use, having received the official title of «Pistol TK Model 1926».
Some TK pistols remained in offices of the State Labor Savings Banks System of the USSR even after the end of the Great Patriotic War.
According to GAU documents the standard only Browning 6,35 mm cartridges produced in the USSR, since 1934, when the TK pistol production was already ended.
The Korovin is mentioned in Len Deighton's spy novel Billion Dollar Brain when Harvey Newbegin is giving Ralph Pike the equipment needed for his mission in Russia.