The initial production form became the Sa vz. Performance-wise, these handle little weapons could fire at 600 rounds-per-minute with a muzzle velocity rating of 1,800 feet-per-second. A shoulder stock, either of fixed wood or foldable wire, was typically attached to the rear for a third point of support - particularly useful when firing in full-automatic. The barrel protruded a short distance ahead of the frame and iron sights were fitted over the gun in the usual way. Ahead of the trigger was a small length of support structure for the non-firing hand. The handle was set well-aft of center mass ad also aft of the trigger unit. 23 held its straight box magazine in the pistol grip handle itself (indeed the Czech design is said to have pioneered such a concept). A small rounded-rectangular port along the right side of the body served as the ejection port for spent shell casings. The frame was of tubular shape and used to house the firing action within. In general appearance, the gun was laid out in a conventional fashion. The trigger was designed in such a way so as to allow quick selective-fire control of the weapon by the operator - so a light pull delivered single-shot functionality while a deep pull engaged the full-automatic fire mode.
The original chambering was in the ubiquitous 9x19mm Parabellum German pistol cartridge but the Soviet 7.62x25mm Tokarev pistol cartridge (due to the Soviet influence over Czechoslovakia in the post-World War 2 world) was supported through a future model addition. The weapon is a no-frills SMG operating from a standard blowback principle of operation utilizing an open-bolt arrangement (the bolt overhung the frame at the rear to allow for an overall shorter weapon, a new concept at the time). The type was widely accepted by Soviet-aligned 2nd and 3rd rate powers of the period and, despite its Cold War-era introduction, continues to pop up in various modern-day battlefields such as that of the Syrian Civil War (2011-Present). In the immediate post-World War 2 period, the Czech concern of Ceska Zbrojovka began production of a new indigenous (and quite revolutionary) Submachine Gun (SMG) in the Samopal Sa vz. At one point in its history, the former Czechoslovakia was a prolific designer and producer of various small arms running the gamut of pistols, submachine guns and light machine guns.
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