The TT-33 is a semi-automatic pistol designed in the Soviet Union and introduced in 1933. It was developed by Fedor Tokarev and is known for its simple design and reliability. The pistol uses the 7.62×25mm Tokarev cartridge, which provides high velocity and effective range. The TT-33 was widely used by the Soviet military and various other countries during and after World War II. Its robust construction and ease of use made it a popular choice among soldiers. The design has influenced many other firearms, and variants of the TT-33 are still in use today.