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The Scorpion EVO 3 is a submachine gun, developed by Ceska Zbrojovka company. The "EVO 3" denotes that it is a third generation weapon. Though in terms of design this weapon is unrelated to the original Sa vz.61 Skorpion. The Scorpion EVO 3 was first publicly revealed in 2009. This weapon is mainly aimed at law enforcement forces. It has been adopted by armed forces and police of the Czech Republic.
The Scorpion EVO 3 is a lightweight and compact submachine gun. It is suitable for concealed carrying and for use inside buildings, vehicles and other narrow spaces.
It is a blowback operated weapon, which fires from a closed bolt. This weapon is chambered for a standard 9x19 mm Parabellum ammunition. There is also a version chambered for .40S&W ammunition, which is very popular as a police round in the United States. Receiver and many other components of this weapon are made of polymer materials in order to save weight.
An ambidextrous fire mode selector is located above the pistol grip. It has settings for "safe", "semi-auto", "3-round burst" and "full-auto". There is also a semi-automatic only version of this weapon.
A charging handle can be installed on either side of the receiver. However spent cases are extracted only to the right side.
This weapon is fed from 20- or 30-round capacity magazines. The magazines can be made from semi-translucent plastic. It allows to see how many rounds are still left in the magazine. Magazine release switch is located on a triggerguard. Two magazines can be clamped together for faster reloading.
The Scorpion EVO 3 has got a side-folding stock. It has a telescopic design and can be adjusted for length. The stock can be completely removed from the weapon.