CZ 452 - balanced small-bore rifle, the production of which is concentrated in the Czech Republic. Sturdy gun with a simple design and all the necessary fixtures. It feeds on .22LR cartridges. You can use a carbine while hunting, but the optimal result is achieved during training shooting.
Design
Gate
The shutter device consists of nine spare parts. The stem of the bolt is made of steel. Precision casting technology is used. At the end of the machining. The only disadvantage of the bolt is its dimensions, which do not correspond to the small-caliber rifle. The advantages include high strength. If necessary, the owner can carry out the development of the shutter during the hunt.
The stem performs many functions. Its design consisted of a channel for the drummer, a groove for the reflector and a sending groove. This is only part of the stalk attachments. The detailed structure can be found in the technical documentation of the gun. The stem does not rotate. It is attached to the swivel coupling, which provides for locking the breech and cocking the drummer.
The CZ ZKM 452 coupling is made similarly to a stalk: exact molding and the subsequent machining. On the clutch there are lugs, which are arranged symmetrically relative to each other. Landing on the stem sliding. The screw surface of the coupling is responsible for cocking the hammer and eliminating the possibility of an accidental shot when the shutter is open.
Drummer has a channel for the mainspring, a groove for the fuse rod, a safety ledge and a striker. It is made similar to the stem and clutch. Experts recommend to avoid idle pressing the trigger, as this can damage the striker.
The ejector and the sleeve are installed in an unconventional way. They are placed in the longitudinal grooves, but are fixed not with pins, but with L-shaped hooks with C-shaped leaf springs. This design solution allows you to easily remove the ejector for cleaning.
Receiver
Made of steel. Since the locking occurs on the receiver, many experts are skeptical about the use of light alloy for the manufacture of this element carbine CZ 452 ZKM. It has a cylindrical shape. The wall thickness is suitable for the use of powerful ammunition "Magnum". A large section is responsible not only for strength, but also for bending with torsion, which affects the effectiveness of shooting.
For mounting optics grooves dovetail are provided. The guide has a width of 11 millimeters. The choice of the bracket is not difficult. The window for removing the sleeves is located on the right. Behind there is an annular groove for the lugs of the coupling and notches for the trigger mechanism. Connector for the store is located below, there are holes for mounting screws.
The device provides for the receiver liner. It is made according to the technology of milling and post-processing by high temperatures. The reflector is fixed - the most popular solution for removing shells from the receiver.
Mine shop placed in the slot located on the bottom of the box. It is made of nylon by casting technology. This approach has defined high quality and reliability. Nylon withstands severe frosts, is not afraid of organic solvents and oils. Spring-loaded latch store, made in the style of a Kalashnikov assault rifle, placed forward mine.
Score
The manufacturer offers customers two types of stores: 5 and 10 rounds. It is made by the same method and from the same material as the mine. Store disassembly is standard, for more details please refer to CZ 452 22LR documentation.
The upper part of the store requires fine work, as it is responsible for feeding the charge into the chamber. Difficulties in feeding are due to the old design of the .22 LR liner. Raising the back of the filing line does not occur with the feeder spring, but with two bevels that are in front of the lips. For the stable operation of this mechanism, bevels are adjusted to maximum accuracy.
If the shop was made by stamping from steel sheet, it would stop working after a slight jolt. The Czech rifle shop is made of plastic, reinforced with steel reinforcement. Stable functioning of the mechanism will occur until plastic is erased from the bevels. Another advantage of this structural solution is the absence of corrosion for the entire operational period.
Trigger mechanism
Made by analogy with the Wichester 70. The device is simple and reliable. It is based on a spring-loaded trigger and a self-squeezing whisper. There are no extra parts, the trigger mechanism is deprived of even the body. This is possible thanks to embracing the whisper hook from two sides - their axes are located on the same line.
Sheptalo is responsible for holding the hammer and limiting the gate while moving to the rearmost position. The trigger is equipped with a pin that can turn the sear off. This is necessary to remove the shutter.
With such a structure, the drummer will be released under any climatic conditions and the degree of contamination of the mechanism. Owner can customize the descent effort. How this happens can be found in the technical documentation of the instrument. The movement of the trigger is smooth and uniform, this is achieved through the use of a long trigger spring with a large start.
If you do not have enough smoothness and uniformity, you can handle the surface of the engagement. This is done with the help of thin skins and grease with highly effective anti-friction additives. In the process of surface treatment it is necessary to ensure that the faces do not fall down the edges.
Sighting mechanism
Presented in the form of front sight and rear sight. Both elements are made well. To adjust them, you will need a cartridge and a small screwdriver.
The base of the front sight is made and steel and pressed onto the trunk. The transition of the trunk to the base of the front sight is imperceptible, if not to look closely. The front sight is mounted on the dovetail slot, which is placed in the upper part of the base. Height adjustment occurs by moving the front sight in the groove.
The spring tube is made of sheet steel. It is placed on special grooves that are made at the base of the front sight. Such an approach to the device of the earphone makes it invisible during operation and easy to remove.
The sight is made by sector type. It can be adjusted to fire at a distance of 25 to 200 meters. One step is 25 meters. Adjusting the sight does not cause the shooter difficulty. Each position has a value corresponding to the distance.
The rear sight with a semicircular slot is installed in the transverse groove, which is located in the rear part of the aiming bar. Regulation takes place by two screws, which are twisted towards each other. All parts of the sighting mechanism are made of steel and are ground. The main disadvantage of the system is the proximity to the eye of the shooter.
Lodge
Made from light walnut wood and varnished. Comfortable shape does not bother when shooting. The notch is made on the neck of the box. The grooves for metal components were made on special equipment with computer settings, which explains the high accuracy.
On the surface of the box there is a plastic back plate, a trigger guard with a lower larva and an attachment for fastening the belt. The back plate looks acceptable, the appearance is spoiled by the trigger guard, which does not fit into the overall design and reduces the price of the CZ ZKM 452 carbine.
Fuse
At the gate there is a safety lock, which when activated locks the drummer. The mechanism is simple and reliable. When the fuse is activated, the drummer is dosed by one millimeter, creating a gap between the trigger and the sear. The forward fuse is activated.
Disassembly and assembly of the shutter
Turn the clutch relative to the stalk, securely grab the bolt. To drown the guide rod, it is necessary to rest the gun in a solid surface. In this position, the fuse is removed, which leads to the descent of the firing pin.
The role of the contactor performs the fuse rod. Once it is removed, the guide rod, the mainspring, the hammer, and the coupling can be pulled out of the bolt stem. At the end you want to remove the ejector and the sleeve. To do this, the plate spring must be removed with a small screwdriver, and the elements sought after will fall out on their own.
Assembly is similar to disassembly. First installed ejector and sleeve. They can be distinguished by the width. The second stage - a coupling is put on the stem, then a drummer, and a combat spring on it. The guide rod can be installed after the coupling has been moved to the closed position. To install the fuse you will need to drown the guide rod again.
Safe use rules
The manufacturer applies the rules for the safe operation of weapons:
- It is always necessary to apply as if the weapon is charged;
- You can not aim at something or someone, if you are not going to shoot;
- You need to make sure of the discharge yourself, even if the second person says that they have done the process of discharging;
- Melkashka CZ 452 must be charged before transferring to another person or before being in your area of vision;
- Prior to storage, the trigger must be discharged and released;
- The purpose is one - shooting, you can not abuse the carbine;
- It is impossible to disregard the charged automatic vinotka;
- Before charging, make sure that the trunk and other components are in good condition. In order for all mechanisms to work stably, regular cleaning is required in accordance with the rules;
- For shooting, you can not use low-quality ammunition and those that are not suitable for caliber;
- It is forbidden to use alcohol or drugs during the operation or before the start;
- During shooting it is recommended to use goggles and earplugs;
- When removing from the fuse you need to ensure the safe direction of the sighting line;
- The ejection port of the sleeves must always be clean;
- The finger can only be put on the trigger after the target has been selected;
- In addition to choosing a target, you need to consider the area behind it. In the case of a miss, you can hit an unwanted object;
- It is forbidden to shoot at stones or water;
- Before cleaning the gun you must ensure that it is unloaded;
- Stored rifle CZ 452 should be in a metal safe separately from the cartridges;
- For safe operation, it is forbidden to make changes in the structure independently.
The use of these rules restricts the owner from unforeseen situations that may lead to problems with the law.
Adjusting the sighting mechanism
Factory settings provide high-quality shooting at a distance of 50 meters. Self-tuning is possible for firing at a distance of 25 meters to 200 meters. One step sighting mechanism - 25 meters.
You can move the rear sight to the desired value after pressing the lock button. Horizontal adjustment is carried out by means of two screws that move towards each other. After the screw is fully rotated, the aiming point shifts by 5 centimeters, which is 50 meters.
The front sighting device is responsible for setting the elevation. Before adjusting the elevation, loosen the screw, then place it on the desired auxiliary line. Offset by one division moves the aiming point by 50 meters.
Barrel cleaning
After purchase, the barrel bore must be cleaned of factory grease. To do this, use a clean, soft cloth. Cleaning can be completed only after the next approach, the napkin remains clean.
After prolonged use, the approach to purification is tightened. A cleaning brush and a mixture with a solvent effect are used. First, the channel is lubricated with a solution, left for 10-20 minutes, after which you need to carry out a thorough brushing.
Cleaning other parts
To clean the remaining components, you can use a dry cloth, toothbrush, copper brush or wooden scraper. Oil or kerosene can be used as blends. It is prohibited to use the solution used to clean the dirty barrel. It can cause rust. At the end of the process it is recommended to make sure that there are no small particles of the cleaning tool left on the parts of the rifle.
What can be concluded?
The characteristics of the Czech gun, as well as practical experience, speak of its high quality, despite the presence of some flaws. The average cost of a new carbine ranges from 40 to 50 thousand rubles. Has a high demand in many countries. It is used not only by hunters and athletes, but also by some detachments of power structures.
