Uzi

The Uzi is a related family of open bolt, blowback-operated submachine guns made in Israel.

Details
The Uzi was first invented by Major Uziel Gal in 1948, in order to facilitate mass production. A prototype was created in 1950. In 1954, the Uzi was first introduced into the Israeli Defense Forces. In 1956, it was officially placed into general issue within the Israeli military. By the time the 1960s started, and up to the 1980s, the Uzi was the most sold submachine gun in the world, having been sold to over 90 countries worldwide and being adopted into various military and police forces. It was also the first gun to allow for the use of the telescoping bolt design, which allows for its magazine to be used in the pistol grip of a shorter weapon, a feature that wasn't seen since the Japanese Type II machine pistol.

During the San Hieronymo Takeover, Big Boss's Resistance unit managed to procure a Uzi at the Assembly plant on the San Hieronymo Peninsula. Also, the Perfect Soldier, Null, utilized a Uzi as his preferred firearm.

In-game descriptions
"An israeli-made submachine gun, the Uzi is designed to facilitate mass production--appropriate for a country like Israel, which faces difficulty in importing weapons. The Uzi is also extremely reliable, crafterd such that it rarely malfunctions in dusty environments. Although it fires from an open bolt, the Uzi boasts respectable accuracy, enabling head shots at close range. Uses 9x19 ammo."

- Uzi weapon description from Metal Gear Solid: Portable Ops