The gun has been formally shaped into QCW05 5.8mm micro-acoustic submachine gun. Let's walk into this final gun together.
Research and development?
200 1, 10 In June, the sample gun developed by Construction Group Army Research Institute won the bid with excellent performance in the performance comparison test. At the end of 200 1, a 5.8mm micro-acoustic submachine gun development system project team was established with a research institute of the Construction Group Army as the chief designer. The development system includes four subsystems: 5.8mm micro-acoustic submachine gun, 5.8mm micro-acoustic bomb, white light sight and low light sight. In February 2002, the whole system completed all the testing work of the prototype, and in March of the same year, the project review was completed and the prototype was transferred to the development stage. During the development of the prototype, the problems of poor strength and inconvenient use of competing sample guns were improved, and the problems of four rows of magazines not shelling and low reliability under the condition of river water immersion were repeatedly overcome: the problem of not shelling was solved by repeatedly adjusting the dimensions of each magazine cone and the dimensions of the magazine longitudinal groove; By improving the angle and size of the bullet surface and the bullet distributor when the magazine was changed from double row to single row, using laser welding technology to improve the welding accuracy, increasing the wall thickness of the magazine to prevent the magazine from deforming, and digging a leaking Chacon at the bottom of the magazine cover, the problem of low reliability of the four-row magazine in river immersion test was basically solved. ?
From August to September, 2002, after the evaluation of the initial prototype of the system was completed, the prototype was developed. In September, 2002, two prototypes appeared some problems in the trial, such as low initial speed and failure to meet the predetermined tactical and technical requirements. At the same time, the muzzle velocity of the newly manufactured ballistic gun is also low, and the range between the maximum muzzle velocity and the minimum muzzle velocity is very large. At first, the project team compared the size of the combat gun and the ballistic gun with the prototype, saying that the charge of the micro-acoustic bullet was adjusted, so that the initial velocity of the newly manufactured ballistic gun reached 3 13 LOM/s, but the average initial velocity of the micro-acoustic bullet fired by the micro-acoustic submachine gun was still low. The curve of micro-acoustic chamber pressure shows that the chamber pressure is close to 1 atmospheric pressure at the distance of 80mm from the muzzle, and then the bullet slows down. This shows that the initial speed is low due to the lack of system energy. Finally, by adjusting the interior ballistic performance of micro-acoustic projectile propellant, the lead of barrel rifling is increased, so that the initial velocity can meet the index requirements. ?
After completing the initial velocity study, the project team carried out prototype manufacturing, system prototype identification test and review, national shooting range design finalization test, thermal (sea) unit test, sandstorm unit test, cold area unit test and design finalization review. At the beginning of 2005, the models were officially confirmed as QCW05 5 5.8mm micro-acoustic submachine gun and QQ05 5 5.8mm light submachine gun (excluding muffler). ?
Overall structure?
QCW05 5.8mm micro-acoustic submachine gun adopts the automatic mode of free bolt, which is locked by inertia and can be fired at any time. The bolt is impacted forward under the action of compound spring. The gun is equipped with grip safety and firing safety (that is, the reducer can't pull the trigger when it is in the 0 position), and there is no empty bin suspension mechanism, so it can be fired in single shot and continuous shot. The micro-acoustic submachine gun can fire 5.8mm micro-acoustic bullets, but it can't fire 92 type 5.8mm pistol bullets, otherwise it will damage the muffler; Light submachine guns can fire the above two kinds of bullets. The gun is light in weight, small in volume, small in recoil, easy to control when shooting and high in shooting accuracy. ?
QCW05 5.8mm micro-acoustic submachine gun adopts unsupported structure. Except for the muffler, the whole gun looks like a miniature version of the 95-type 5.8mm automatic rifle. The combination of three plastic parts, namely the butt, the upper protective cover and the lower hand guard, is the same as that of the 95-type 5.8mm automatic rifle. The lower hand guard adopts the positioning mode of hanging first and then clamping, the front positioning pin is hung in the groove below the quasi-constellation, and then fixed on the shell with a fixing pin; The positioning plate in front of the upper protective cover is in the quasi-constellation bayonet, and the positioning plate in the back is inserted into the positioning hole above the photo door seat. At this time, the upper protective cover can only move backwards and is fixed by the front end face of the stock. The gunstock is fixed on the shell through the rear positioning plate of the upper protective cover, the positioning surface of the shell and the positioning pin; According to the door seat, the bucket seat and the shell are fixed together by two hollow pins, of which the larger hollow pin at the back is also used as the rear fixing pin hole of the lower hand guard. ?
Insurance institutions?
Qcw05 5.8mm micro-acoustic submachine gun is equipped with transmitter safety and grip safety. In the prototype development stage, the safety transmission part of the grip adopts translation structure, but the mechanism is not flexible in the shooting process, and the phenomenon of jamming often occurs, especially in the low temperature test. In the development stage of the prototype, the transmission part is changed into a rotating structure, and there is no more jamming phenomenon. ?
The advantage of the grip safety mechanism is that when the firing safety is in the non-safety position, it can prevent the trigger from being accidentally hooked or the gun body from falling. However, its shortcomings are also obvious: when it is loaded for the first time, the shooter must hold the grip insurance to hang it; During shooting, the shooter must always hold the grip safely, otherwise the bolt can't sit still; Wedge failure is easy to occur between bolt and continuous retaining iron, especially in low temperature and river immersion test. ?
Launchers and launchers?
The launching mechanism of QCW05 5.8mm micro-acoustic submachine gun is very simple, which consists of trigger, reducer, single choke, continuous choke, choke spring and launching card. The mechanism has three states: single engine, continuous engine and safety, which correspond to the 1, 2 and 0 positions of the reducer respectively. When the reducer is at 1000 rounds, pull the trigger and release the bolt. After firing, when the bolt is in place, the single-shot bolt that is lifted stops at the rear. After the trigger is released, the single-shot bolt is raised and the bolt is pressed down to release the bolt. When the bolt stops, pull the trigger again to fire the next bullet. When the reducer is in the repeating position, the single-shot stopper is overwhelmed by the reducer, the trigger is pulled, and the repeating stopper releases the bolt. After firing, the bolt sits back to its original position and returns directly to realize repetition. When the reducer is in a safe position, the reducer prevents the continuous stopper from being overwhelmed and the trigger cannot be pulled. ?
The gun adopts a firing mechanism with a firing pin fixed on the bolt, and the bullet is fired by the energy of a compound spring. The front part of the bolt is guided by the barrel and the rear part is guided by the shell, which ensures the accuracy of the bolt movement route. ?
Bomb supply mechanism?
QCW05 5.8mm micro-acoustic submachine gun adopts magazine feeding mechanism, four-row compound structure, magazine capacity of 50 rounds, complex structure and great technical difficulty. The magazine is similar to two double-row single-feed magazines, except that the two magazines are separated by a bullet plate. When the bullet is changed from double row to single row, the magazine mouth is in the form of double row and double entry. In order to ensure the reliability of ammunition supply, designers constantly improve its structure and processing technology during the development process. At first, the magazine adopted an integral structure, and its internal structural dimensions were "cut" by mechanical processing. Because the above processing technology is complex, the structural size is difficult to ensure and mass production is impossible, the designer quickly changed it into a welded magazine, which was divided into two parts, left and right, processed separately and then welded together. The welding process was first adopted by ordinary electric welding, and then changed to laser welding. In order to improve the strength of the magazine and prevent the magazine from being deformed due to falling or collision, which affects the reliability of ammunition supply and increases the wall thickness of the magazine; In order to improve the concealment and grip comfort of the magazine, the surface of the magazine is frosted and matte. In order to ensure the reliability of shooting in the flooded river, two leaking Chacon were machined on the bottom cover of the magazine. In order to facilitate the shooter to observe the remaining ammunition, five small holes were opened on the back of the magazine, representing 10 rounds, 20 rounds, 30 rounds, 40 rounds and 50 rounds respectively from top to bottom. The fly in the ointment is that the width of the four rows of magazines is large, which leads to the increase of the local width of the gun body, which is not beautiful enough. Moreover, the distance between the magazine and the grip is close, which will make the shooter feel that the magazine hurts his hand when shooting. ?
Aiming mechanism?
The gun adopts a simple mechanical sight composed of a pinhole camera and a columnar sight, and is equipped with two rotatable cameras. Select the corresponding camera according to the target distance and bullet type. When a submachine gun fires a DCV05 type 5.8mm micro-acoustic bullet, aim at the target with a distance of 100m with a pinhole camera engraved with … 1'. When the submachine gun fires a DAP92 type 5.8mm bullet, aim at the target at a distance of 100m with the keyhole camera door engraved with "2". The cantilever guide rail in front of the camera is the same as that on a 5.8mm rifle, and an optical sight can be installed. ?
Muffler?
When QCW05 type 5.8mm micro-acoustic submachine gun fires 5.8mm micro-acoustic bullets, the peak sound pressure level of noise at the distance of 2m on the horizontal side of the muzzle is 1 16 dB, which is obviously lower than that of 85 type 7.62mm micro-acoustic submachine gun. When shooting, standing next to the shooter, you can almost only hear the sound of the bolt hitting other parts. The muzzle of the gun is smokeless and flameless when it is fired, and produces a small amount of smoke when it is fired repeatedly. ?
The silencers of QCW05 type 5.8mm micro-acoustic submachine gun and 85 type 7.62mm micro-acoustic submachine gun all adopt detachable silencing bowl structure. The size of the silencing bowl of the 85-type 7.62mm micro-acoustic submachine gun is the same, but the length of each segment and the diameter of the inner hole of the QCW05-type 5.8mm micro-acoustic submachine gun are different, so it must be arranged in a certain order to achieve the best silencing effect. These dimensional data and arrangements are all explored through a large number of experiments. ?
The muffler is fixed on the gun mask by thread, and the muffler limit clamp is installed on the sight seat, which can prevent the muffler from loosening when shooting. When installing the muffler, first lift the limit clip, screw the muffler in place, and then lock the limit clip. ?
Conclusion?
It is reported that the first batch of QCW05 5.8mm micro-acoustic submachine guns have been equipped with our special forces, which are mainly used for reconnaissance, infiltration and anti-terrorism operations.