UA155738U - Attaching a silencer to the barrel of a firearm - Google Patents

Abstract

A silencer for attaching to a firearm barrel, comprising a nozzle attached to said barrel on its muzzle side, an adapter in the form of a hollow cylinder, which is attached to the barrel through said nozzle on one side, and on the opposite side of said adapter is connected to a hollow coupling, the opposite side of which is connected to said silencer. The nozzle consists of two separate bits, which, when connected, hug the outer surface of the barrel with their inner surface, while the inner surface of the bits has a protrusion for engagement with a shoulder made on the outer surface of the barrel on its muzzle side, and the outer surface of the bits has a transverse groove into which the crimp ring of the nozzle bits is inserted. An adapter having a groove on one side of the hollow cylinder into which the barrel's front sight is inserted, and a thread for connection to the coupling is made on the opposite side of the hollow cylinder of the adapter, and a shoulder is made in the cavity of the hollow cylinder of the adapter, into which the end face of the nozzle crumbs from the side of the transverse groove is resting, while the inner cavity of the adapter encloses the outer surfaces of the nozzle crumbs. The coupling on the side of the connection with the silencer has a baffle covering the coupling cavity, with the said baffle having a central through hole for connecting the barrel channel to the silencer cavity, and the baffle along its periphery having additional through bypass holes for powder gases entering the coupling through the slots of the barrel flame arrestor.

Description

A useful model belongs to the mounting of a silencer on the barrel of a firearm.

Often used for firearms are silencers (gunshot noise silencers), which are attached to the barrel of firearms, for example, rifles, submachine guns, see MoMo patents

OA1T24979, 51017003, 51127250, 51427802, 52448593, О0511397065.

Known silencer mounts for firearms, see MoMe patents 051054434,

O5Z710679, 57610710.

The closest analogue is the mount for a silencer for firearms according to patent Mo 55773746.

The structural feature of the closest analogue is that the nozzle is made in the form of a hollow cylinder, on the outer surface of which a thread is made and to which two ears are attached, into which two latches with a bend are inserted hingedly. A nozzle is inserted from the muzzle side of the barrel and the retainers are inserted, as a result of which the bend of the retainer is fixed to the outer edge, which is made on the barrel. To fix the fasteners on the nozzle, an adapter is wound, which is made in the form of a hollow cylinder with an internal thread, which is wound on the external thread of the cylinder of the nozzle, as a result of which the fasteners lean against the inner surface of the adapter and cannot be opened, and thus the bends of the fasteners are engaged with the outer edge barrel

The coupling is made in the form of a cylindrical part with three sections of different diameters, on the outer surface of which there is an external thread. At the same time, one section is located on the side of the connection of the coupling with the adapter, and the other two sections are located on the opposite side of the coupling in the area of its connection with the muffler.

In the connection area of the adapter and the coupling, a longitudinal groove is made, into which a wedge is inserted for fastening the coupling with the adapter with tension. On the opposite side of the coupling, two sections of different diameters are made, on the outer surface of which there is an external thread for attaching the muffler.

Installation of the known muffler mount is carried out as follows. First, the nozzle is installed on the barrel so that the bends of the fasteners interact with the side of the barrel. Then the adapter is wound so that its inner surface interferes with the opening of the attachment latches. Then a wedge is inserted into the groove of the coupling, since the outer surface of the nozzle

If it is made under a cone, then the nozzle is screwed onto the coupling under tension. Then the muffler is screwed onto the nozzle.

The disadvantage of the well-known silencer mounting for firearms is the complexity of the design, which is due to the large number of parts and the precision of their manufacture and matching of parts to each other.

Also, the disadvantage of the known technical solution is that the slits of the flame arrestor are closed and through them there is no discharge of powder gases from the bore during a shot, which leads to a constructive increase in the values of the load of powder gases on the structure of the silencer attachment and does not allow to fire a regular shot. for which the firearm was designed without the use of a silencer attachment.

Since the flamethrower has longitudinal slits, which are closed by the inner surface of the coupling, which is made in the form of a hollow cylinder, this leads to the fact that after firing, one part of the powder gases enters these slits and presses on the walls of the hollow cylinder of the nozzle, and the second part is released through the barrel. As a result, the wall of the hollow cylinder of the nozzle is deformed in the area of the external thread, on which the adapter is wound, into which the coupling is also screwed. This deformation leads to wear of the threaded fasteners, especially during heating of the known muffler mount. It also leads to a decrease in the efficiency of evacuation of powder gases from the bore of a firearm, which changes the temperature regime of the barrel.

As already mentioned, since there is no exit of powder gases through the slots of the flame arrester, therefore, when a shot is fired, a transverse impulse occurs in the slots of the flame extinguisher, which affects the coupling, which is fixed on the bore of the barrel, and this transverse impulse is transmitted to the barrel, as a result, vibrations of the barrel in the transverse direction will occur, which impairs the effectiveness and quality of the shot.

The purpose of the useful model is to simplify the design and increase the efficiency of mounting the muffler on the barrel of a firearm, and to create a mount of the muffler on the barrel of a firearm, which has an effective system for removing powder gases during a shot.

Also, the task of the proposed useful model is to create a muffler mount for a firearm barrel, which reduces longitudinal and transverse vibrations of the barrel during a shot and simplifies the manufacture of a muffler mount for a firearm. because Also, the task of a useful model is to increase the efficiency of heat distribution during a shot.

The task is solved by the fact that the silencer is attached to the barrel of a firearm, which consists of a nozzle fixed on the mentioned barrel from its muzzle side, an adapter, which is made in the form of a hollow cylinder, which is attached on one side through the mentioned nozzle on the barrel, and on the opposite side, the mentioned adapter is connected to a hollow coupling, the opposite side of which is connected to the mentioned muffler, according to a useful model - the nozzle consists of two separate crackers, which, when connected, embrace the outer surface of the barrel with their inner surface, while on the inner surface of the crackers, a protrusion is made for engagement with the edge, which is made on the outer surface of the barrel from its muzzle side, and on the outer surface of the crackers, a transverse groove is made, into which the crimping ring of the crackers nozzle is inserted - an adapter, which has a hollow cylinder on one side a groove is made, into which the front sight of the barrel is inserted, and on the opposite side of the hollow cylinder of the adapter, a thread is made for connection with the coupling, and in the cavity of the hollow cylinder of the adapter, a lip is made, against which the end side of the crackers of the nozzle rests from the side of the location of the transverse groove, while the inner the cavity of the adapter embraces the outer surfaces of the nuts of the nozzle, - the coupling on the side of the connection with the silencer has a partition that covers the cavity of the coupling, while the mentioned partition has a central through hole for connecting the bore of the barrel with the cavity of the silencer, as well as in the partition along its on the periphery, additional through-through bypass holes for powder gases entering the clutch through the slits of the barrel's flame arrester are made.

According to the useful model, the adapter is made in the form of one continuous part, the coupling is made in the form of one continuous part. In the septum of the coupling, a bend is made, against which the end side of the barrel rests from its muzzle side. On the inner surface of the coupling, longitudinal protrusions are made, which adjoin the partition from the side of the movement of powder gases, while between the longitudinal protrusions there are additional openings of the partition of the coupling, and the end side of the nozzle crackers has a chamfer that connects to the surface of the side, which is located in the cavity of the hollow cylinder adapter

When using the proposed useful model, when installing the mount on the barrel, u

A bypass chamber is formed from the coupling, which is located between the outer surface of the flame extinguisher and the inner surface of the coupling. The bypass chamber formed is connected to the barrel through the slits of the flame arrester, and the bypass chamber is also connected to the silencer cavity through additional holes in the coupling partition. Also, a cavity is formed in the coupling, which is located between the inner surface of the coupling and the outer surface of the nozzle crackers, and the cavity is bounded on one side by the end surface of the adapter, and on the opposite side, the cavity is connected to the bypass chamber.

During a shot, the powder gases pass through the bore and one part of the powder gases enters the bypass chamber through the slits of the flame arrester, and the other part of the powder gases enters the silencer cavity coaxially with the conventional axis of rotation of the silencer through the central hole made in the clutch partition. From the bypass chamber, one part of the powder gases enters the cavity, in which they press on the outer surface of the crackers of the nozzle, which increases the pressure of the nozzle embracing the outer surface of the crackers, which increases the reliability of attaching the nozzle to the barrel of a firearm.

Powder gases enter the muffler cavity along the conventional axis of rotation of the muffler through the central hole of the coupling partition, and powder gases enter along the periphery of the inner surface of the muffler wall through additional bypass holes made in the coupling partition. As a result of this, the powder gases entering through the barrel muzzle and the central hole expand in volume and move to the inner surface of the silencer wall, along which additional flows of powder gases are formed, entering the silencer cavity, through additional holes of the clutch partition, on one side these additional flows of powder gases move along the inner surface of the muffler, and they also expand to the conventional axis of rotation of the center of rotation of the muffler, and as a result, in the cavity of the muffler, the flow of powder gases departing from the conventional axis of rotation of the muffler collides with additional flows of powder gases leaving through additional holes of the clutch partition, and this leads to a decrease in the transverse momentum transmitted to the clutch, and this leads to a mutual cancellation of the powder gas flows in the silencer cavity, and this leads to an improvement in the quality of the shot.

Also, the presence of radial longitudinal protrusions, located on the sides of the additional openings of the clutch partition, separate the adjacent flows of powder gases and they connect 60 closer to the center of the silencer cavity, where they meet with the flow of powder gases that expand in volume from the center, and this causes these countercurrents to effectively cancel each other out, which results in a reduction in the transverse momentum imparted to the coupling from the powder gases, which reduces the lateral movement of the barrel during firing.

Also, when using a useful model, powder gases flow more evenly throughout the longitudinal section of the silencer cavity, and this leads to a reduction in zones with different pressures, which also leads to an increase in the effectiveness of the silencer and to an improved shot.

A narrow terminology is used when considering the implementation options of the proposed useful model. However, the proposed useful model is not limited to accepted terms and it should be borne in mind that each such term covers all equivalent elements that work in a similar way and are used to solve the same tasks.

List of figures

Fig. 1 - a general view of mounting a silencer on a firearm barrel, with a partial longitudinal section.

Fig. 2 - a general detailed view of the mounting of the silencer on the barrel for a firearm, shown in Fig. 1.

Fig. C - a general view of two crackers of the nozzle shown in fig. 2.

Fig. 4 - a general view of the nozzle ring shown in Fig. 2.

Fig. 5 - a general view of the adapter shown in Fig. 2.

Fig. 6 - longitudinal section of the adapter shown in Fig. 5.

Fig. 7 is a front view of the coupling shown in FIG. 2.

Fig. 8 is a general longitudinal overall cross-section of the coupling shown in Fig. 7, side view of the location of the clutch partition.

Fig. 9 - view of the assembly on the clutch Fig. 7 from the side of the partition.

The list of positions shown in the figures: 1 - muffler, 1, - internal thread of the muffler 1, 2 - the barrel of a firearm from its muzzle side,

З 21 - barrel channel 2, 22 - front sight of barrel 2, 2z - flame arrester, which is located on the muzzle side of barrel 2, 24 - flame arrester slots g5z, 25 - flame arrester gz,

C - nozzle,

With: - two bread crumbs 3,

Zg - protrusion for engagement with the edge 25 of the barrel 2,

Зз - a transverse groove made on the outer surface of the crackers З,

By. crimp ring of crackers ZI,

C5 - the chamfer of the end side of the nozzle 3, 4 - the adapter made in the form of a hollow cylinder, 4. - the thread made on one side of the hollow cylinder of the adapter 4, which is intended for connecting the adapter 4 with the coupling 5, 42 - groove, which is made in the hollow cylinder of the adapter 4 on one side of it and into which the front sight 22 of the barrel 2 is inserted, 4z - the edge, which is made in the cavity of the hollow cylinder of the adapter 4, 5 - the coupling, which is made in the form of a hollow cylinder, 5i - the external thread of the coupling 5 for connection with muffler 1,

B2 - the internal thread of the coupling 5 for connection with the adapter 4, 5z - the partition that covers the cavity of the coupling 5 and which is located on the side of the connection of the coupling 5 to the muffler 1,

B5. - the central through hole, which is made in the partition 5z, into which the barrel 2 is inserted from its muzzle side,

B5 - additional through holes, which are made in partition 5z along its periphery,

Bv is a bend made in the partition 5z, against which the barrel 2 abuts from its end side, 57 - radial longitudinal protrusions adjacent to the partition 5z and located on the side of the connection of the coupling 5 to the cavity of the muffler 1. b - bypass chamber located between the outer surface of the flame extinguisher 2 from the barrel 2 and the inner surface of the coupling 5,

7 - the cavity formed in the cavity of the hollow cylinder 41 of the adapter 4 in the area of its adjacency to the coupling 5 and which is located between the outer surface of the crackers З: nozzle З and the inner surface of the coupling 5.

An example of implementation

Determine the parameters of the barrel 2 of the firearm, for which a useful model of fastening the silencer 1 to the barrel 2 for firearms will be used, on the basis of these parameters, determine the parameters of the said fastening of the silencer 1 to the barrel 2.

After that, nozzle 3, adapter 4, coupling 5 are made separately, see Fig. 2.

Making nozzle 3, see Fig. 3, it happens as follows, a workpiece is used and, by means of metalworking, a protrusion Зg is formed in the inner surface of the workpiece, a transverse groove З3, which is made on the outer surface of the workpiece, and also a chamfer З5 is formed on the end surface, which will be connected to the inner edge 4з , which is made in the cavity of the hollow cylinder of the adapter 4, see Fig. b

After that, the processed workpiece is cut longitudinally into two separate parts, resulting in two crackers C: nozzles 3.

A compression ring Z"4 is also produced separately, see Fig. 4, with a groove that will be inserted into the transverse groove 33 made on the outer surface of the crackers 31.

As a result, the nozzle Z is obtained, which consists of two crackers 31, which are a half-ring and on the outer surface of the crackers Z: a transverse groove 33 is made, a protrusion Z2 is made on the inner surface of the crackers Z, and also on the end side of the crackers Z: a chamfer Z5 is made from the side of the location of the transverse groove Зз.

The composition of nozzle C also includes a crimping ring For crackers C: nozzles 3.

For the manufacture of adapter 4, see Fig. 5, a blank is also used, as a result of metalworking, the specified parameters of the adapter 4, which is made in the form of a hollow cylinder, are obtained. On one side of the hollow cylinder of the adapter 4, a thread 4 is made on its outer surface: for connecting the adapter 4 with the coupling 5. On the opposite side of the hollow cylinder of the adapter 4, a groove 42 is made, into which the front sight 2 from the barrel 2 is inserted.

Also, in the cavity of the hollow cylinder of the adapter 4, a shoulder 4z is made, against which the end side of the crackers З rests: nozzles З from the side of the location of the transverse groove Зз, when

Therefore, the inner cavity of the adapter 4 covers the outer surface of the crackers C: nozzles 3.

For the manufacture of clutch 5, see Fig. 7, take a blank and carry out metal machining to obtain the required parameters of the coupling 5, which is made in the form of a hollow cylinder, on one side of which there is an external thread 51: for connecting the coupling 5 with the muffler 1, and on the opposite side of the coupling 5 in its the cavity has an internal thread 52 for connecting the coupling 5 with the adapter 4.

The coupling 5 also has a partition 5z that covers the cavity of the coupling 5 and which is located on the side of the connection of the coupling 5 to the muffler 1. The partition 5z has a central hole 54 through which the channel 21 of the barrel 2 is connected to the cavity of the muffler 1.

Additional holes 55 are also made on the periphery of the partition 5z, see Fig. 9, which connect the cavity of the clutch 5 with the cavity of the muffler 1.

Also, in the partition 5 of the coupling 5, a bend 56 is made, against which the end side of the barrel 2 rests from its muzzle side.

Also, radial longitudinal protrusions 57 are adjacent to the partition 5z of the coupling 5, between which there are additional openings 55 of the partition 5z, while the longitudinal projections 57 are located on the side of the connection of the coupling 5 to the muffler 1.

To install the fastener, the adapter 4 is inserted into the barrel 2 so that the front sight 22 enters the groove 42 of the adapter 4. After that, the crackers Z are connected to the barrel 2 so that the protrusion Z2 is located behind the edge 25 of the flame extinguisher 2z in the direction of movement of the powder gases in channel 21 of barrel 2.

After that, the snap ring Z. is inserted into the transverse groove 33, as a result of which the crackers 3: nozzles 3 are connected on the outer surface of the barrel 2, and the inner projection 32 of the nozzle 3 engages with the edge 25 of the fire extinguisher 2z. After that, the coupling 5 is put on the barrel 2 and connected to the adapter 4, as a result of which the thread 41 of the adapter 4 enters into interaction with the external thread 5 of the coupling 5. As a result of winding the coupling 5 on the adapter 4, it begins to move in the direction of the side 25 of the flame 2 of the barrel 2 and the edge 4 of the adapter 4 begin to abut against the chamfer ЗB of the end face of the nozzle Z and begin to interact with the inner surface of the adapter 4, which increases the force of embracing the crackers Z: the nozzles Z on the outer surface of the barrel 2, and in turn the crackers Z create the opposite resistance of this force, which leads to an effective threaded connection of the adapter 4 to the coupling 5, and also ensures reliable fastening of the crackers 3: nozzles З on the outer surface of the barrel 3. At the same time, the protrusion З2 interacts with the edge 25 of the fire extinguisher 2 from the barrel 2 At the same time, since the front sight 22 is in the groove 42 of the adapter 4, it makes it possible to rotate the adapter 4, nozzle 3, coupling 5 and silencer 1 on the barrel 2.

After installing the coupling 5 on the barrel 2, between the outer surface of the flame extinguisher 2z and the inner surface of the coupling 5, a bypass chamber 6 is formed, see Fig. 1, which is connected to the channel 2 of the barrel 2 through the slits 24 of the flame extinguisher 2z. Also, the bypass chamber 6 is connected to the cavity of the muffler 1 through additional holes 55, which are made in the partition 5 of the coupling 5 and are located along the perimeter of the central hole 5", see Fig. 9.

It should also be noted that a cavity 7 is formed, see Fig. 1, which is formed between the outer surface of the crackers Z: the nozzle Z and the inner surface of the coupling 5, while the cavity 7 is connected to the bypass chamber 6 on one side.

The front side of the barrel 2 from its muzzle side rests against the bend 56 of the partition 5z, which increases the efficiency of fastening the coupling 5 on the barrel 2.

During a shot, the powder gases pass through the channel 21 of the barrel 2 and part of the powder gases passes through the slits 24 of the flame arrester 2z and enters the bypass chamber 6, and the other part of the powder gases from the channel 21 of the barrel 2 enters through the central hole 54 of the partition 5z into the silencer cavity 1.

From the bypass chamber b, the powder gases also enter the muffler cavity 1 through the additional holes 55 of the partition 5 of the coupling 5. From the muffler cavity 1, the powder gases are discharged into the environment. Also, in the bypass chamber b, the powder gases enter the cavity 7, where the powder gases press on the outer surface of the crackers C: nozzles 3.

The kinematics of the process of removal of powder gases from the channel 21 of barrel 2 leads to the fact that during the passage of powder gases through the additional holes 55 of the partition 5z of the coupling 5, pressure is formed on the partition 5z from the side of the bypass chamber 6, while this pressure has a direction that coincides with the movement of powder gases in the channel 21 of the barrel 2. As a result, the coupling 5 has an impulse along the movement of the powder gases in the channel 21 of the barrel 2. This impulse from the coupling 5 is transmitted to the nozzle З and from it to the barrel 2. Also, the pressure of the powder gases is created in the cavity 7, which has the opposite direction of movement of powder gases in channel 2: barrel 2, while in cavity 7 there is a pressure of powder gases on the cracker 31 of the nozzle 3, which leads to a better crimping of the outer surface of the barrel 2, as well as a better engagement of the projection Z2 of the nozzle Z about

From the side 25 of the flame extinguisher 23 from the barrel 2. Also, the pressure in the cavity 7 creates an impulse that has the opposite direction of the movement of powder gases in the channel 2: barrel 2. The two specified impulses affect each other, which leads to a decrease in the longitudinal movement of the barrel 2, which is also an advantage of the proposed useful model.

The presence of the cavity 7 and the bypass chamber b, see Fig. 1, increases the volume into which part of the powder gases are diverted through the slits 24 of the flame extinguisher 23, and this ensures the effective removal of powder gases through the flame extinguisher 2z, and it also reduces the transverse the pulse that is transmitted to clutch 5.

From the bypass chamber 6, the powder gases pass through the additional holes 55 of the partition 5, which are located along the perimeter of the central hole 54 and enter the cavity of the muffler 1.

At the same time, there are radial longitudinal protrusions 57 at the exit of the additional holes 55, as a result of which the flow of powder gases coming out of the additional holes 55 partially expands to the conditional axis of rotation of the silencer 1, and this flow of powder gases also has the energy to move along the inner surface of the silencer cavity 1 and it gradually expands and mixes with the powder gases leaving the channel 21 of the barrel 2 through the central hole 54 of the partition 5z of the clutch 5. Therefore, when using a useful model, the powder gases enter the silencer cavity 1 along the periphery of the partition 5z, as well as the other part of the powder gases enters the silencer cavity 1 parallel to the conventional axis of rotation of the silencer 1. As a result, the powder gases are supplied relatively evenly along the transverse plane of the silencer cavity 1, and this leads to the fact that there are no zones with different pressures in the silencer cavity 1 and there is no strong pressure drop , which can cause pulsations that can be transmitted to barrel 2, which can degrade the quality of the shot, which is also an advantage of a useful model.

It was established that during the exit of powder gases through the central hole 54, a rapid expansion of the flow of powder gases in the cavity of the silencer 1 occurs, while additional flows of powder gases leaving through additional holes 55 expand along the conditional axis of rotation of the silencer 1, as a result of which in the cavity muffler 1, these flows of powder gases meet, and this leads to the fact that a kind of support is created for the powder gases leaving through the central hole 54, which in turn leads to a decrease in the lateral influence of the powder gases leaving the barrel channel 21 through the central hole 54 on the inner surface of the muffler 1, since this central flow of powder gases rapidly 60 expands and contracts with additional flows of powder gases leaving the cavity of the muffler 1 through additional holes 55 on the inner cavity of the muffler 1, which is also an advantage of a useful model.

Also, the presence of a partition 5z in the cavity of the coupling 5 increases its strength, as well as increases the reliability of the threaded connection of the internal thread 1: the muffler 1 with the external thread 51 of the coupling 5, which also reduces the infiltration of powder gases through this threaded connection.

Part of the powder gases coming from the channel 21: barrel 2 into the bypass chamber 6 fall into the cavity 7, in which the powder gases press on the outer surfaces of the crackers Z of the nozzle C, thereby increasing the crimping of the outer surfaces of the barrel 2, which increases the effectiveness of attaching the nozzle to the barrel 2 .

It should be noted that the proposed silencer mount for firearms is effective for use in sniper rifles, such as the Dragunov Sniper Rifle (SGD).

It is clear that this description contains information that is necessary and sufficient for a clear understanding of the essence of a useful model. Information that is obvious to specialists in this field of technology and that did not contribute to a better understanding of the essence of the proposed useful model was not given in this description.

The technical result of the proposed utility model is to increase the reliability of the silencer mounting design for firearms and increase the effectiveness of the shot during its use.

Claims (6)

USEFUL MODEL FORMULA 1. Attachment of a silencer to the barrel of a firearm, which consists of a nozzle that is fixed on the mentioned barrel from its muzzle side, an adapter that is made in the form of a hollow cylinder, which is attached on one side through the mentioned nozzle on the barrel, and on the opposite side, the mentioned the adapter is connected to a hollow coupling, the opposite side of which is connected to the mentioned muffler, which differs in that - the nozzle consists of two separate crackers, which when connected with their inner surface embrace the outer surface of the barrel, while on the inner surface crackers Zo have a protrusion for engagement with the edge, which is made on the outer surface of the barrel from its muzzle side, and a transverse groove is made on the outer surface of the crackers, into which the crimping ring of the crackers of the nozzle is inserted - an adapter in which a groove is made on one side of the hollow cylinder, into which the front sight of the barrel is inserted, and on the opposite side of the hollow cylinder of the adapter, a thread is made for connection with the coupling, and in the cavity of the hollow cylinder of the adapter, a shoulder is made, against which the end side of the nozzle crackers rests from the side of the location of the transverse groove, while the inner cavity of the adapter embraces the outer surfaces of the nozzle crackers, - the coupling on the side of the connection with the silencer has a partition that covers the cavity of the coupling, while the mentioned partition has a central through hole for connecting the bore of the barrel with the cavity of the silencer, as well as additional holes are made in the partition along its periphery through bypass holes for powder gases entering the clutch through the slots of the barrel flame arrester. 2. Fastening according to claim 1, which differs in that the adapter is made in the form of one continuous part. C. Fastening according to claim 1, which differs in that the coupling is made in the form of one continuous part. 4. Fastening according to claim 1, which differs in that a bend is made in the partition of the coupling, against which the end side of the barrel rests from its muzzle side. 5. Fastening according to claim 1, which differs in that the inner surface of the coupling has longitudinal protrusions that adjoin the partition from the direction of movement of powder gases, while between the longitudinal protrusions there are additional openings of the coupling partition. 6. Fastening according to claim 1, which is characterized by the fact that the end face of the nozzle crackers has a chamfer that connects to the surface of the edge, which is located in the cavity of the hollow cylinder of the adapter.