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Star Model Z84

Submachine Gun (SMG) [ 1984 ]

With a configuration akin to the famous Israeli UZI, the Spanish Star Model Z-84 was an equally reliable and useful submachine gun - though finding few takers.

Authored By: Staff Writer | Last Edited: 09/24/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

Star Bonifacio Echeverria, S.A. based its post-World War 2 submachine design on the German wartime MP40 which was marketed as the Star Z-45. This was followed by an evolution of the line that included the modernized Z-70 used by Spanish military elements. By 1984, it was determined to produce a new submachine gun based on an all-new lightweight, compact design which became the Star Z-84. The Z-84 showcased an Israeli UZI-esque appearance and proved itself reliable even after being submerged. However, the American civilian firearms market was closed off to Star following the 1994 Assault Weapons Ban which heavily curtailed possible sales in the US. Though the weapon was trialled by a several nations in the interim, it was never adopted. The Star concern then went defunct in 1997 after a 92-year run of firearms development and production.

The Z-84 was chambered for the widely-accepted 9x19mm Parabellum German pistol cartridge and fired through a blowback system of operation utilizing an open bolt design. Rate-of-fire was 600 rounds-per-minute with feeding from a 25- or 30-round straight, detachable box magazine. As in the Israeli UZI - a configuration copied globally - the Z-84's magazine was inserted into the base of the pistol grip. The action allowed only for full-automatic fire which meant that the operator had to take special care not to clear the magazine too quickly. The grip sat at the centerpoint of the design which, when loaded with a magazine, led to a well-balanced, inherently accurate weapon. The trigger loop was purposely large for use by a gloved hand and protected sight assemblies were fixed at the front and rear surfaces of the receiver in the usual way. A short barrel was largely concealed by the receiver. An optional twin-strut folding stock was available which, when extended, gave the weapon a running length of 24 inches. Length was reduced to 16 inches when the stock was folded over the receiver by way of a hinged. Weight was a handy 7lbs while overall construction incorporated stamped steel and specialized castings.©MilitaryFactory.com
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Basics [+]
Star Bonifacio Echeverria SA - Spain
Spain National flag of Spain
Service Year
National Origin

Overall Length
410 mm / 16.14 in
Weight (Empty)
6.61 lb / 3.00 kg
Blowback; Open Bolt; Full-Automatic
Rounds are automatically ejected from the breech, a new cartridge stripped from the feed and set in the chamber, and rounds are continuously fired so long as the trigger is pulled and an ammunition supply exists.
Gas pressure from the rearward movement of the ignited cartridge case provides the needed bolt movement, ejecting the spent case and stripping a fresh case from the magazine.
System utilizes internal mechanism where bolt and associated working components are set to the rear of the receiver with no cartridge chambered; trigger actuation moves bolt forward, chambers cartridge, and fires bullet in single action - ultimately resetting during the complete cycle by way of the generated energy.
9x19mm Parabellum
*May not represent an exhuastive list; Calibers may be model-specific dependent; Always consult official manufacturer sources.
25- or 30-round detachable box magazine
Iron Front and Rear.

Material presented above is for historical and entertainment value and should not be construed as usable for hardware restoration, maintenance, or general operation - always consult official manufacturer sources for such information.

600 rpm

Model Z84 - Base Series Designation

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