The TT pistol was developed as a replacement for the gas-seal revolver produced by whom?
TT pistol:  It was developed in the early 1930s by Fedor Tokarev as a service pistol for the Soviet military to replace the Nagant M1895 revolver that had been in use since Tsarist times, though it ended up being used in conjunction with rather than replacing the M1895.
i don't know