American Rifleman | Evaluate: CZ Scorpion EVO 3 S2 Micro

In the introduction to our report on the CZ-USA Bren 2 Ms, we highlighted the innovation that is spreading in the Czech firearms industry. Recently, a newer Czech subgun has been gaining popularity in military, law enforcement, and (in semi-automatic form) civil circles. Like the Bren, CZ-USA, known as “Scorpion”, offers semi-automatic versions in pistol and rifle shapes.

The vz. 61 The Škorpion submachine gun, whose production began in 1961, was an attempt to use a “submachine gun” as a personal defense weapon (PDW). It fired the .32 ACP (7.65mm) round, popular in Europe for police and military weapons at the time, from a closed bolt. The scorpion, weighing 3 pounds and 8 ounces, was small enough to be carried in a special holster on the hip, for example for officers and crew members who need a compact yet powerful material, arm.

The CZ Scorpion EVO 3 submachine gun has been adopted by armed forces and law enforcement agencies around the world. The submachine gun design is the basis for the Scorpion semi-automatic pistols and rifles sold by CZ in the United States (Image courtesy of CZ-USA, Inc.).

In 2010, CZ re-used the name Škorpion, “internationalized” it by replacing the “k” with a “c” and applied it to the Slovak submachine gun design Laugo, to which CZ acquired and developed the rights.

Labeled “EVO 3” to indicate that it is the third generation of the Scorpion submachine gun, starting with the vz. In 61 the design uses a receiver which is a two-piece sheath made entirely of polymer with no metal inserts or internal guide rails for the steel pin (the pin is guided by the rod contained in the action spring). Not a new concept, a fully polymeric upper “receiver” was used in other submachine guns such as the Steyr TMP and its successor, the B&T MP9.

The Scorpion was designed ergonomically. The pistol grip position can be adjusted by a few millimeters at the front and rear to change the reach to the trigger. A safety selector lever is located above the pistol grip on either side. The rechargeable handle is mounted to the front in an MP5-like position and can be swapped on both sides.

It can be locked backwards for MP5-style reloading, although the Scorpion bolt is held open on an empty magazine and can only be released by a lever on the left side. The magazine release is a paddle-style lever that can be accessed with either the right or left hand. It can be pressed with the index finger to allow the magazines to fall freely, or it can be operated with the thumb while grasping the magazine to remove and hold it.

The bolt release on the CZ Scorpion is on the left side of the weapon.

The bolt release on the CZ Scorpion is on the left side of the weapon.

The CZ Scorpion's magazine release is an ambidextrous paddle arrangement that can be actuated with the wearer's thumb when the magazine is gripped for retention.

The CZ Scorpion’s magazine release is an ambidextrous paddle arrangement that can be actuated with the wearer’s thumb when the magazine is gripped for retention.

The magazine release can also be activated with the index finger of the shooting hand.  Scorpion magazines fall free when the trigger is pulled.

The magazine release can also be activated with the index finger of the shooting hand. Scorpion magazines fall free when the trigger is pulled.

In 2015, a semi-automatic pistol version of the Scorpion was offered in the US. There are currently three configurations of Scorpion pistols available. The standard S1 pistol mimics the Scorpion submachine gun, with its low-mount visors and polymer handguard with cast-in Picatinny rail sections, but in a semi-automatic form and without a stock. It is available in four colors.

The rechargeable handle of the CZ Scorpion can be installed either on the right or on the left.  A rechargeable handle can even be installed on both sides at the same time.

The rechargeable handle of the CZ Scorpion can be installed either on the right or on the left. A rechargeable handle can even be installed on both sides at the same time.

A second version of the Scorpion pistol has an advanced “flash can” muzzle device, magpul sights, and the Scorpion rifle’s extended handguard that allows a suppressor to be attached to the pistol to fit inside the handguard. This configuration is also available with a foldable SB Tactical armrest.

The modern CZ product that best fits the spirit of the original Škorpion submachine gun is the Scorpion S2 Micro. The civil version was developed by CZ-USA for an undercover law enforcement agency and features a shortened 4.12 inch barrel (the Scorpion standard submachine gun or pistol uses a 7.75 inch barrel) and a telescopic armrest, which collapses for a total length of only 16.50 inches. , only 6 “longer than the original vz. 61.

The trigger reach on CZ Scorpion rifles and pistols can be adjusted by loosening a bolt and moving the handle back and forth.

The trigger reach on CZ Scorpion rifles and pistols can be adjusted by loosening a bolt and moving the handle back and forth.

The version of the Micro I tested in 2019 was equipped with a short handguard from HB Industries with hand stop, visor with factory opening, an SB Tactical PDW armrest and a SilencerCo NoOsprey faux suppressor that covers the barrel. The 2020 version of the Scorpion Micro pistol is offered with a side folding strut, a shorter muzzle device of the “Blitzdose” type and Magpul folding sights.

A 2019 model of the CZ Scorpion Micro S2 pistol.  The right side is shown with the armrest extended.

A 2019 model of the CZ Scorpion Micro S2 pistol. The right side is shown with the armrest extended.

The Scorpion Micro Pistol formed five-shot groups of just under 2 inches at 25 meters with the aperture sights supplied. The notoriously heavy SMG trigger breaks at just under 10 pounds but is handy. Reliability was perfect on every type of ammunition I’ve tried, from 115-gram target FMJ to self-defense hollow point to 147-gram subsonic ammunition.

To disassemble the Scorpion firearm range, the front removal pin is pushed out, starting with the bolt that is locked to the loading handle in the rear position. This allows the lower housing and the fire control system to be removed. The bolt and main spring assembly can then be pulled down and out of the receiver. The barrel / end cap and pistol grip remain in place.

In addition to its range of pistols, CZ-USA offers the Scorpion in semi-automatic carbine form. Like the Bren 2 rifle, the rifle-sized Scorpion must use US-made parts and differs from the standard S1 pistol with its extended handguard with M-LOK slots and Magpul visor, and a foldable and telescopic buttock.

The CZ Scorpion Micro S2 pistol was stripped for on-site cleaning.

The CZ Scorpion Micro S2 pistol was stripped for on-site cleaning.

One of the newest versions of the Scorpion rifle is the Magpul Edition. This model takes the standard Scorpion rifle and features a 35-round PMAG, MOE-EVO grip, Zhukov-S folding and telescopic stock, upgraded MOE-EVO magazine release, and MBUS sights.

The 16.20 “Scorpion rifle barrels have a thread of 1 / 2×28 TPI and are equipped with either a muzzle compensator or a barrel-covering faux suppressor. Scorpion rifles are available in the versions Black or Flat Dark Earth (FDE). The controls and Other Features of the Scorpion The rifles are the same as those of the Scorpion pistol described above.

With its Scorpion rifles and pistols, CZ-USA offers civil firearms based on mature and extensively tested products used by the military and law enforcement agencies around the world. The result is affordable and reliable firearms that continue to demonstrate the global influence of Czech arms manufacturers.

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