The breech block is then carried rearwards extracting the empty cartridge casing from the chamber. The hinged breech locking piece swings up and this movement provides the leverage required for primary extraction. After 22 mm (0.9 in) of unrestricted travel, a wedge-like surface on the bolt carrier moves under the hinged breech locking piece and lifts it up and out of engagement with the locking recesses in the steel body. The weapon is unlocked by the short tappet-like stroke of the piston rod as it strikes the bolt carrier and drives it rearwards. The locking system features a locking piece hinged from the bolt and housed in the bolt carrier that contains two locking lugs which descend into and engage locking shoulders in the receiver's internal guide rails. The entire piston rod is chromium-plated to prevent fouling. The gas cylinder is vented after the piston has traveled back 16 mm (0.6 in) and the remaining gases are exhausted into the atmosphere on the underside of the cylinder via two ports. There is a light return spring held between the piston shoulder and the seating which returns the piston to its forward position. The piston is driven back only 19 mm (0.7 in) when a shoulder on the piston rod butts against the seating and no further movement is possible. Fallout 3 alloy steel assault rifle full#58 does not have a gas regulator and the full force of the gas pressure is exerted on the piston head, propelling it backwards in a single impulsive blow. 58 is a selective fire gas-operated weapon that bleeds expanding combustion gases generated in the barrel from the ignited cartridge through a port drilled in the barrel, 215 mm (8.5 in) from the chamber, opening into a hollow cylinder located above the barrel that contains a short-stroke piston. Members of Active Reserve of the Armed Forces of the Czech Republic armed with vz.58 58 still remains the main assault rifle of the Slovak army, the Slovak army has also been eyeing CZ-805 as a possible replacement to the aging vz. In 2011, the Czech army started replacing vz. Another recent contender is the ČZW-556 assault rifle and ČZW-762 light machine gun which both use lever-delayed blowback which has more reliable accuracy and performance over the gas operation. 58 was proposed in the 1990s the 5.56×45mm NATO ČZ 2000 assault rifle has been suggested as a possible replacement but due to a general lack of defense funds within the Czech Republic, the program was postponed. 58 P but includes a receiver-mounted dovetail rail bracket (installed on the left side of the receiver) used to attach an NSP2 night sight it also has a detachable folding bipod and an enlarged conical flash suppressor.Ī successor to the vz. 58 Pi ( Pěchotní s infračerveným zaměřovačem-"infantry with infrared sight"), which is similar to the vz. 58 V ( Výsadkový-"airborne"), featuring a side-folding metal shoulder stock, folded to the right side, and the vz. 58 P ( Pěchotní or "infantry") model with a fixed buttstock made of a synthetic material (plastic impregnated wood, older versions used a wooden stock), the vz. 58 was produced in three main variants: the standard vz. The assault rifle entered service in 1958 and over a period of 25 years (until 1984), over 920,000 weapons had been produced, fielded by the armed forces of Czechoslovakia, Cuba and several Asian and African nations. As a result, the prototype, known as the "Koště" ("broom"), was designed to chamber the intermediate Soviet 7.62×39mm M43 cartridge, rather than the Czech 7.62×45mm vz. The Soviet Union had begun insisting that the Warsaw Pact forces standardize on a common ammunition. It shares no parts with Kalashnikov rifles, including the magazine.ĭevelopment of the weapon began in 1956 leading the project was chief engineer Jiří Čermák assigned to the Konstrukta Brno facility in the city of Brno. 58 resembles the Soviet AK-47, it is a different design based on a short-stroke gas piston. 52 self-loading rifle and the 7.62×25mm Tokarev Sa 24 and Sa 26 submachine guns. 58) is a 7.62×39mm assault rifle designed and manufactured in Czechoslovakia and accepted into service in the late 1950s as the 7,62 mm samopal vzor 58 ("7.62mm submachine gun model 1958"), replacing the vz. Open-type iron sights with sliding rear tangent and shrouded front post Staggered 30-round detachable box magazine, weight 0.19 kg (0.42 lb) unloaded Gas-operated, hinged locking piece assisted breechblock
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