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The CZ 52 pistol is a roller-locked short recoil–operated, detachable box magazine–fed, single-action, semi-automatic pistol chambered for the 7.62×25mm Tokarev cartridge (the gun was originally designed for 9×19mm Parabellum caliber but due to political pressures had to be redesigned for the then-standard Soviet pistol cartridge).
The principle of firing a projectile from a firearm is that when the propellant in a bullet's casing is ignited, the propellant burns quickly for a very short time. This creates a high-pressure pocket of gas that expands, pushing the projectile (bullet) out of the chamber and down the barrel of the firearm.
The CZ-45 holds 8 rounds in the magazine and has a simple groove down the top of the slide for sighting. [1] The main design weakness in the CZ-45 is a brittle firing pin like the CZ 52. Dry-firing the CZ-45 may damage the firing pin, and also the extractor which acts as the firing pin retainer; damaging the firing pin retainer bulge on the ...
A firing pin or striker is a part of the firing mechanism of a firearm that impacts the primer in the base of a cartridge and causes it to fire. In firearms terminology, a striker is a particular type of firing pin where a compressed spring acts directly on the firing pin to provide the impact force rather than it being struck by a hammer.
The origin of the roller-locking is debated: [1] even though the general principle of utilizing "ball bearing parts" under radial pressure "for preventing uncoupling of the coupling members" was known no later than 1910s, [2] it was apparently not used in firearms until 1930s.
A firing pin block is a mechanical block used in semi-automatic firearms and some revolvers that, when at rest, obstructs forward travel of the firing pin, but is linked to the trigger mechanism and clears the obstruction to the pin just before the hammer or striker is released. This prevents the firing pin from striking a chambered cartridge ...
Older designs such as the CZ 52 and Colt Single Action Army are exceptions. However, dry firing a rimfire firearm, striker based firearms or guns with angled firing pins (such as revolvers with hammer-mounted firing pins or older shotguns) can damage the gun. [citation needed] Furthermore, damage can occur to the chamber mouth of a rimfire ...
A rimfire firing pin produces a notch at the edge of the case; a centerfire pin produces a depression in the center of the primer. Rimfire ammunition is so named because the firing pin strikes and crushes the base's rim to ignite the primer. The rim of such a cartridge is essentially an expanded and flattened end section of the case, and the ...