ЧССР-дың 1952 жылғы үлгісі CZ 52 тапаншасы

The CZ 52 (also known by the Czechoslovak military designations vz. 52, for (vz. vzor = model) "model of 1952", and CZ 482) is a semi automatic pistol designed by two brothers, Jan and Jaroslav Kratochvíl, in the early 1950s for the Czechoslovak military. Around 200,000 vz. 52s were made by Česká Zbrojovka in Strakonice from 1952 to 1954. Ergonomically, the grip of the CZ 52 is long when measured from front to rear and slim from side to side with a low "hump" which meets the web of the hand at the rear. It also has a high bore axis which increases felt recoil.

The CZ 52's operating controls consist of a single action trigger, an external hammer, a magazine catch located at the heel of the grip frame, and a combination de cock/safety lever located on the left rear side of the receiver aft of the left grip panel. The manual safety blocks movement of the sear, which prevents the hammer from releasing and firing a round. A second safety, in the form of a spring loaded firing pin block, prevents the pistol from firing unless the trigger is pulled fully to the rear; this feature renders the pistol "drop safe". However, if the firing pin block spring has become worn, the pistol may be rendered unsafe in the event of a muzzle down drop, or in the case of other internals being worn, it may be drop safe only when "cocked and locked", for instance. Care should be taken when handling firearms of uncertain origin, and only a competent gunsmith should be relied upon to verify the safety mechanisms of surplus guns are intact. Because the sear must overcome the additional spring pressure of the firing pin block, an inherent feature of the CZ 52 is its unusually heavy trigger pull, often in the range. The hammer is of the rebounding type, meaning that it does not contact the firing pin while in its uncocked position, and cannot do so unless the trigger is pulled, another safety feature. Using the decocker relies on the integrity of the firing pin block; if the firing pin block is worn, an unintentional discharge can result when the decocker is engaged. Because of this, the decocker is considered to be unreliable and its usage is not recommended. After a full magazine is inserted, the slide is fully retracted and released. This action cocks the hammer, strips a cartridge from the magazine, and chambers it. Rotating the three position safety lever fully downward, exposing a red warning dot between the receiver and the hammer pivot pin, renders the pistol ready to fire. Rotating the lever upward to its center position covers the red dot and engages the sear block (allowing "cocked and locked" carry). Finally, rotating the safety lever fully upward decocks the hammer by releasing the sear and intercepting the hammer's forward movement. This position allows safe carry of the pistol with a round in the chamber. The hammer must then be cocked manually and the safety disengaged before a round can be fired. As the trigger is pulled in this state, the trigger bar rotates the sear, a lug on the sear disengages the firing pin safety located directly above it, and the opposite side of the sear releases the hammer. The hammer then impacts the firing pin, the firing pin impacts the primer of the cartridge, and the shot is fired. The magazine catch is located at the heel of the pistol grip. It is pulled toward the backstrap to release the magazine from the well. A potential problem arises in that there is now minimal pressure on the magazine spring and the magazine catch is under constant pressure from the mainspring, forcing it into contact with the rear of the magazine. This means that magazines do not drop free and occasionally take a few seconds to remove from the pistol. Releasing the slide catch is done by removing the empty magazine (or inserting a loaded one), then retracting the slide and releasing it. There is no thumb operated lever to release the slide (although an aftermarket slide release lever is available).