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The Uzi (/ ˈ uː z i / ⓘ; Hebrew: עוזי, romanized: Ūzi; officially cased as UZI) is a family of Israeli open-bolt, blowback-operated submachine guns and machine pistols first designed by Major Uziel "Uzi" Gal in the late 1940s, shortly after the establishment of the State of Israel.
The stock is tubular and sidefolding, departing from the complicated retractable design of the Israeli UZI; it pivots underneath the back side of the receiver and lies flat against the right side of the gun when folded. It is longer than the UZI stock (200 millimetres vs. 180), and results more comfortable to operate and to shoulder.
The gun's receiver was machined from a single circular steel tube. The design of the Sa 23 series submachine guns is most notable in the West for having inspired the open-bolt , blowback-operated , telescoping bolt design of the slightly later Uzi submachine gun.
Receiver: 1911 based PDW FDM Deterrence Dispensed .45 ACP, 9×19mm Parabellum, .22 TCM: Utilizes a 1911 slide for the upper, and an AR-15 fire control group.
In early versions, the front one is similar to the Uzi, although it went on to be captive and rotating in the shield that holds the barrel to the receiver. On the receiver aiming devices are: a hooded front post sight and a rear L-shaped flip sight adjustable for windage and with 50 and 100-meters sight positions. It is all protected by side ears.
A disassembled Mauser action showing a partially disassembled receiver and bolt. In firearms terminology and law, the firearm frame or receiver is the part of a firearm which integrates other components by providing housing for internal action components such as the hammer, bolt or breechblock, firing pin and extractor, and has threaded interfaces for externally attaching ("receiving ...
The upper receiver is a steel tube and the barrel is held in place by the perforated barrel jacket. The lower receiver and magazine housing consists of sheet metal. The extended magazine well has a plastic hand guard and doubles as a forward grip. It has the Uzi submachine gun-type magazine interface and uses Uzi magazines, which are locally ...
The MP9 uses a hammer-fired closed-bolt design. Foundational elements, such as the blowback operating action, are similar with minor improvements for efficiency. Similar to the Uzi, the MP9 was designed around simplicity, with these combination of factors leading the MP9 to be named the "improved Uzi".