The Skorpion submachine gun was developed in the late 50′s by Miroslav Rybar and produced by Česká Zbrojovka arms factory under designation Samopal Vzor 61. Škorpion was also produced in Yugoslavia under designation M84 . It was designed as a personal sidearm for army armored vehicle personnel, vehicle drivers, army staff and special forces.
The Yugoslavian Skorpion is a select-fire, straight blowback-operated weapon that fires from the closed bolt position with effective range of 164 yards (150m). The Škorpion uses the 7.65×17mm Browning SR (.32 ACP) pistol cartridge with a short 10 round magazine or a 20 round magazine. The weapon is hammer-fired and has a trigger mechanism with three fire mode selector: safe, semi-automatic and fully-automatic with rate of fire of 850 rounds/min. This weapon small size of 10.6 inch (270mm) length folded and 20.4 inch (517mm) length extended mostly contributed to expansion of its use. Škorpion is equipped with folding metal wire shoulder stock which folds up and over the receiver and is locked on the front sight’s protection and adjustable front post and flip up rear sight. Barrel Length is 4.5 inch (115mm) and weight 45.1 oz (1280g).
The weapon is hammer-fired and has a trigger mechanism with a fire mode selector, whose lever (installed on the left side of the receiver, above the pistol grip) has three settings: “0”—weapon is safe, “1”—semi-automatic mode and “20”—fully automatic fire. The “safe” setting disables the trigger and the bolt in the forward position (by sliding the bolt catch lever upwards).
The Škorpion uses the 7.65×17mm Browning SR (.32 ACP) pistol cartridge, which was the standard service cartridge of the Czechoslovak security forces. It uses two types of double-column curved box magazines: a short 10-round magazine (loaded weight—0.15 kg) or a 20-round capacity magazine (loaded weight—0.25 kg). The bolt remains locked open after the last cartridge from the magazine has been fired and can be snapped back forward by pulling the cocking handle knob slightly to the rear.
The Škorpion is equipped with open-type iron sights (mechanically adjustable forward post and flip rear sight with 75 and 150 m range notches) and a folding metal wire shoulder stock, which folds up and over the receiver and is locked on the front sight’s protection capture.
The Škorpion, together with a short magazine, is carried like a traditional pistol—in a leather holster, and the two spare long magazines are carried in a separate pouch. The weapon comes with a cleaning kit, front sight adjustment tool, oil bottle and lanyard.