30 results about "Rifling" patented technology

Examples provide a compensator for a firearm. In one example, a firearm assembly includes a firearm having a barrel defining a projectile bore along a bore axis, an attachment mechanism coupled to the firearm and configured to mount the firearm to a movable platform, and a compensator attached to the barrel. The compensator may have a body that defines at least one compensator port configured to vent a portion of gases exiting the barrel upon firing the firearm. In one example, the compensator is oriented on the barrel to direct the portion of gases vented through the at least one compensator port in a direction to counteract angular recoil forces on the movable platform to which the firearm is mounted, the angular recoil forces being caused upon firing of the firearm.

A 25 mm ammunition cartridge centered about a longitudinal axis and extending from a proximal end to a distal end including a case having a base defining the proximal end and a case sidewall extending from the base to a distal mouth and defining a case cavity, a propellant charge disposed in at least a portion of the case cavity, a body having a proximal cup and a body sidewall extending to a distal interface, wherein at least a proximal portion of the body is receivable in the case cavity distal to the propellant charge, a cap extending from a proximal cap portion coupled to the distal interface of the body to a dome defining the distal end of the cartridge, wherein the body and the cap define a projectile cavity, and one or more projectiles positioned within the projectile cavity.

The utility model belongs to bore cleaning and maintaining device technical field, especially for vehicle 155 gun bore cleaning and maintaining device, including power component and maintaining component, power component includes handle shell, the inside installation of handle shell has power motor, the output of power motor is connected big gear through the meshing rotation of tooth disc, one end center of big gear is fixedly connected connector, be equipped with external thread on the connector. The utility model through power component realizes stable deceleration and increases the twist through big gear, cooperation positive and negative rotation motor, can drive maintaining component high -efficient reciprocating cleaning, promotes the removal efficiency of pollutant, the threaded connection design of connector and connecting cavity is convenient for quick replacement copper wire brush, nylon brush different brush head, adapts to the diversification cleaning demand, both ends annular can accurate orientation positioning, avoid long rod cylinder deviation and scratch bore, simultaneously, the length of bristle adaptation guarantees clean dead angle, effectively prolongs the service life of gun barrel, satisfies the high efficiency and safety requirement of actual combat maintenance.

The present invention relates to a method for improving flight stability, effective range, accuracy, and destructive force by moving the center of gravity of a bullet (shell) forward, and the bullet (shell). To this end, the front part of a counterweight jacket of the bullet (shell) is designed to be thicker or higher in density than the rear part thereof, so that the center of gravity is naturally moved forward. This structural feature stabilizes the trajectory by minimizing the yaw angle during flight, and increases the force of impact transmission to the target. In addition, a material having a low specific gravity is used inside a gunpowder contact part and the rear part to further strengthen the effect of moving the center of gravity to the front part. The present invention can maintain a stable flight trajectory in both ground and underwater environments, and maximizes the performance of a bullet (shell) to increase an effective range, destructive force, and accuracy.

A firearm barrel has an elongated body defining a bore and defining a bore axis, the body defining a breech end and an opposed muzzle end, a chamber defined in the breech end and contiguous with the bore; the bore having an interior surface having a plurality of alternating lands and grooves, the grooves being surfaces separated from the bore axis by first radius, the lands being surfaces separated from the bore axis by second radius less than the first radius and the lands and grooves being straight elements parallel to the bore axis, such that no spin is imparted to a projectile propelled down the bore. The lands and grooves may extend from the chamber to the muzzle end. The bore may have a constant cross-sectional profile along its length.

The utility model provides a portable small-caliber electric bore wiping instrument which comprises a shell, a telescopic piece installed at the front end of the shell, a brush connected with the front end of the telescopic piece and extending out of the shell, and a rotating motor installed in the shell, and the front portion of the shell can extend into a gun barrel bore along with the brush. An output shaft of the rotating motor enables the telescopic piece to stretch out and draw back in the length direction of the shell through the transmission mechanism so as to drive the brush to do reciprocating linear motion to wipe the inner surface of the gun barrel and the bore. According to the transmission mechanism, the rotating motion of the rotating motor is converted into linear motion, the telescopic piece drives the brush to stretch out and retract back and forth relative to the shell, impact vibration is formed through the reciprocating motion, dust accumulated on the inner surface of a bore is removed through scouring, and the brush can move forwards along a rifling while stretching out and drawing back till the whole bore is swept once. When the device is retreated, the brush is kept in telescopic motion and returns along the rifling along the original path, and then the whole bore is swept once in an inserted mode.

A firearm receiver assembly comprises a receiver body, a top cover, and an ammunition advancing mechanism mounted on the top cover. The top cover is pivotably attached at a mounting portion thereof to a mounting portion of a receiver body for enabling the top cover to be pivotable about a top cover pivot axis between an open position and a closed position with respect to the receiver body. The top cover pivot axis extends parallel to a bore axis of the receiver body.

An integrally suppressed barrel system for a firearm, the system comprises a barrel having a series of transverse holes and a spiral groove forming machine-type threads of some dimension or specification, a gas block assembly configured to provide integration with the gas cycling system inherent to a firearm, a gas tube configured to protrude back into an upper receiver of the firearm, and a suppressor having a main housing. The main housing of the suppressor includes an inner wall, an outer wall, a series of holes and a base attached to the barrel through machine threads. The suppressor is fixed in a concentric pattern about the bore of the barrel.

In the presented solution, a body part (2) of a bullet (1) is made from material that is more resistant to deformation than lead. The bullet (1) includes a tapered front section (4) and a cylindrical section (3) that defines its outer diameter. The cylindrical section (3) includes on its outer surface grooves (8) in the longitudinal direction of the bullet (1). The grooves (8) reduce friction between the outer surface of the bullet (1) and the rifling of the barrel of the weapon and, thus, decrease heating of the bullet (1) and the barrel and enable the rifling of the barrel of the weapon to displace material from the outer diameter of the bullet (1) into the grooves (8).

A kind of artillery barrel defect detection robot, including cleaning module, drive module and defect detection module, the drive module is the structure of variable diameter helical drive, its front end is connected the cleaning module, rear end is connected defect detection module, drive module movement brings cleaning module and defect detection module synchronous movement, it can carry out defect detection to the wear degree of artillery barrel internal rifling and barrel straightness, while robot carries cleaning brush, can simultaneously clean artillery barrel internal rifling, remove gunpowder residue, water vapor and other pollutants.

The utility model belongs to the technical field of toys, especially relates to soft glue head bullet structure, including soft bullet body and soft glue bullet head, the one end of bullet body is equipped with mounting hole, the one end of soft glue bullet head extends and has the connecting portion, the connecting portion is fixedly connected in mounting hole, the outside of soft glue bullet head is equipped with a plurality of airflow grooves, airflow groove is through to the both ends of soft glue bullet head, and with the axis of soft bullet body is inclined setting. This soft glue head bullet is in when passing the rifling, makes bullet rotate under the action of the rifling. And the outside of soft glue bullet head is equipped with a plurality of airflow grooves, and the airflow groove is inclined setting with the axis of bullet. Therefore, after bullet is launched, will form airflow in airflow groove, and the airflow in airflow groove will push bullet and rotate, increase the effect of bullet rotation, will make bullet keep stronger more far flat posture, makes bullet obtain farther range and accurate effect.

The invention relates to firearms, and more particularly to a caseless bolt-action firearm. A caseless bolt-action firearm comprises a receiver (1) with a support (2), a bolt (63), a firing pin (36), a trigger (28), a magazine latch (27), a safety catch (31), a safety catch bracket (24), a trigger guard (3), an add-on stock (6), a grip (14), a magazine (15) and a barrel (18), wherein in the front part of the receiver (1) there is mounted a weapon chamber (17), and the bolt (63) contains a guide rod (41) for a conical bolt bushing, a triple-layered rifled cartridge (45) and a triple-layered smooth cartridge (44). The invention makes it possible to increase the operating reliability of a caseless bolt-action firearm in difficult conditions, easily eliminate delays, simplify loading and unloading, enable the firearm to operate reliably under combat conditions with forced feed of ammunition, including soiled ammunition, improve the stability of the projectile trajectory and increase firing accuracy both from stable positions and in the case of point shooting.

A gas block for a firearm has a main body and includes an adjustment screw. The adjustment screw in the gas block extends askew the longitudinal axis of the firearm when the gas block and adjustment screw are installed on the firearm. That is, a plane through the adjustment screw is neither coplanar with the longitudinal axis (i.e., bore axis) of the firearm nor perpendicular to the longitudinal axis of the firearm. In this manner, the adjustment screw is accessible through multiple vents or mounting holes through the handguard, and screwing the adjustment screw into or out of the main body adjusts an amount of pressurized gas allowed to flow from a barrel of the firearm back to a receiver of the firearm.

The present invention relates to rifled weapon barrels and sleeves (hereinafter this also applies for example to the bores of pistols and machine guns etc.) having a nitrided interior surface with a layer of thin dense chrome deposit thereon. The inventor has discovered that a thin dense layer of chrome having thickness of 0.0001 to 0.0002 inches unexpectedly falls within the tolerance of the bore of the barrel (and sleeved bore) as specified by the manufacturer, and the thin dense chromed rifle barrels, and sleeves, of the present invention unexpectedly do not need to be oversized as is the case with respect to chromed bores of the prior art (of standard thickness 0.001 to 0.005 inches). The additional benefit of the hardness of the rifle barrels and sleeves of the present invention unexpectedly do not have to be replaced as often as chromed barrels (and sleeves) of the prior art.

The invention relates to the technical field of firearms and ammunition, in particular to a shotgun capable of shooting a bullet screen through a standard chamber gun, which comprises a cartridge case, propellant powder packaged in the cartridge case, an edge ignition type primer mounted at the bottom of the cartridge case and a bullet head matched with an opening of the cartridge case, the bullet head comprises a hard bullet support, and the bullet support is of an integrated structure. A detachable bullet shell is arranged on the bullet support, the outer contour of the bullet support and the outer contour of the bullet shell are matched with a standard gun barrel rifling, a plurality of killing elements are filled in the bullet shell, and at least one indentation longitudinally extends from the tip to the tail of the bullet shell. According to the machine gun shotgun, after the machine gun shotgun is fired, the bullet shell is precisely split along the preset indentation and the fracture groove, the killing fragments and the killing elements are synchronously released to form a dense bullet screen, a target area is rapidly covered by means of the high initial speed and high radio frequency characteristics of a standard machine gun, and shooting-down is achieved by efficiently damaging key components of a low-speed small unmanned aerial vehicle.

The utility model relates to a rifling bullet and shotgun bullet comprehensive launching device, and belongs to the technical field of weapons. The shape of the comprehensive shotgun bullet corresponds to that of the rifling bullet, and the comprehensive shotgun bullet and the rifling bullet can be launched through the rifling The comprehensive shotgun comprises a comprehensive shotgun head and propellant powder; the comprehensive shotgun bullet head comprises a main bullet head and a sub-bullet head; when the rifling launching device is used for launching, the propellant powder generates impact force, the main warhead is rotationally launched through the rifling of the rifling launching device, the branch warheads are separated from the main warhead, and a shotgun launching mode is formed and launched to a shooting target. The rifling projectile can be launched, and the shotgun projectile can also be launched.

This invention relates to the field of gun barrel technology, specifically a method and structure for machining various types of gun barrel rifling using a CNC machine tool. The machining method includes the following steps: S1: Generate a three-dimensional model of the gun barrel rifling, dividing the gun barrel into three equal parts; S2: Machining the outer and inner diameters of the rifling inner wall tube, dividing the rifling inner wall tube into three equal parts; S3: Machining the grooves on the inner bore of each of the three rifling inner wall tubes, milling chamfers; S4: Welding the three rifling inner wall tubes together to form a single rifling inner wall tube, turning it to the specified design outer diameter; S5: Chamfering the weld joints on the end faces of the rifling outer wall tube, machining its inner bore and outer diameter; S6: Press-fitting the rifling inner wall tube into the rifling outer wall tube and welding its two end faces; S7: Precision turning the outer diameter of the entire rifling gun barrel, and boring the inner bore; This invention allows for custom rifling dimensions and machining of different types of rifling; no special equipment is required; the machining method is simple.

A 25 mm ammunition cartridge centered about a longitudinal axis and extending from a proximal end to a distal end including a case having a base defining the proximal end and a case sidewall extending from the base to a distal mouth and defining a case cavity, a propellant charge disposed in at least a portion of the case cavity, a body having a proximal cup and a body sidewall extending to a distal interface, wherein at least a proximal portion of the body is receivable in the case cavity distal to the propellant charge, a cap extending from a proximal cap portion coupled to the distal interface of the body to a dome defining the distal end of the cartridge, wherein the body and the cap define a projectile cavity, and one or more projectiles positioned within the projectile cavity.

The application discloses a reciprocating cleaning device suitable for a shallow-chambered gun barrel cleaning robot, which comprises a main machine, a stand fixedly arranged on one side of the main machine, an extension rod adaptively inserted into the top end of one side of the main machine, a cleaning brush fixedly arranged on the bottom end of one side of the extension rod, a fixing seat fixedly arranged on the top end of the stand, a frame fixedly arranged on the top end of the fixing seat, a gun barrel inserted into the inner cavity of the frame, a limiting rotating mechanism arranged on the top end of the frame, and a reciprocating driving mechanism arranged in the inner cavity of the main machine. The reciprocating cleaning device suitable for the shallow-chambered gun barrel cleaning robot can drive the cleaning brush to reciprocally extend leftward and rightward through the reciprocating driving mechanism, so that the interior of the gun barrel can be reciprocally cleaned. Compared with a one-way cleaning mode, the cleaning work can be more quickly and efficiently completed.

The invention discloses an artillery barrel with a replaceable lining and a method for prolonging the service life of the artillery barrel, the artillery barrel comprises a barrel body (1), a replaceable lining pipe (2) and a limiting plug (3), the replaceable lining pipe (2) is installed in the barrel body (1) through taper threads controlled by pretightening force, the screwing direction of the replaceable lining pipe (2) is consistent with an internal rifling, and the replaceable lining pipe (2) is screwed into the barrel body (1) by applying accurate axial pretightening force. In order to effectively resist huge alternating impact load during launching and prevent fatigue failure of a thread pair, an axial key groove and a positioning key (7) are arranged to guarantee consistency of shooting precision, and absolute accuracy of rifling winding angle positioning of the lining pipe is guaranteed. After being mounted, the lining pipe needs to be subjected to fine honing together with the muzzle part of the barrel to ensure that the inner wall is smooth and continuous. Through the targeted design, the problems of connection reliability, thermal load management, precision consistency and interface sealing performance under the extreme working condition of the artillery are systematically solved, the service life of a barrel system is remarkably prolonged, and the whole-cycle cost is reduced.

A 25 mm ammunition cartridge centered about a longitudinal axis and extending from a proximal end to a distal end including a case having a base defining the proximal end and a case sidewall extending from the base to a distal mouth and defining a case cavity, a propellant charge disposed in at least a portion of the case cavity, a body having a proximal cup and a body sidewall extending to a distal interface, wherein at least a proximal portion of the body is receivable in the case cavity distal to the propellant charge, a cap extending from a proximal cap portion coupled to the distal interface of the body to a dome defining the distal end of the cartridge, wherein the body and the cap define a projectile cavity, and one or more projectiles positioned within the projectile cavity.

A slide for a semiautomatic handgun includes a slide body extending along a bore axis and having a top wall, side walls extending downward from lateral margins of the top wall, and a distal end defining a distal opening intersected by the bore axis. The slide body defines an open region between the top wall and the side walls, the open region sized and configured to receive a barrel of the semiautomatic handgun extending along the bore axis and so that a muzzle end of the barrel is spaced axially from the distal end of the slide body. A distal end portion of the top wall defines one or more ports positioned between the distal end of the slide body and the muzzle end of the barrel to be received in the open region.

An apparatus includes a bullet assembly having a first housing portion, a second housing portion in physical contact with the first housing portion, and a connector coupled to the first and second housing portions. The connector maintains a connection between the first and second housing portions when the first and second housing portions separate subsequent to firing of the bullet assembly from a rifled barrel of a firearm. The bullet assembly also includes a core coupled to the connector. The core comprises a first portion about which the connector is wound in a first direction opposite to a second direction corresponding to rotation of the first and second housing portions subsequent to firing of the bullet assembly and the core allows the connector to unwind freely as the first and second housing portions subsequent to firing of the bullet assembly until the connector is unwound fully from the core.

Some embodiments include a barrel including 1) a muzzle and 2) one or more ports to provide recoil reduction, the barrel including a bore defining one or more rifling discontinuities arranged to prevent projectile striping, the barrel comprising: a first section containing all of the one or more rifling discontinuities; a second section rearward of the first section; wherein each port of the one or more ports comprises an egress in a length of the barrel, wherein each egress comprises an interior opening and an exterior opening, and wherein an entire portion of each of the one or more interior openings is located in the first section of the barrel. Other embodiments may be disclosed and / or claimed.

The electroshock bullet comprises a body, a source of electric energy, a switch, a target-disabling current generator, and electrode-devices for fixing the bullet on the target. The bullet body is made of electrically insulating material with an inner cavity and has prefabricated rifling protrusions or a driving band located on it. On the outer forming shell of the bullet there are conductive protective electrode-tracks connected with electrode-devices for the purposes of fixing the bullet on the target. A cylindrical power source, spring-loaded with an elastic electrically conductive element, is located in the cavity of the body along its axis. The replaceable barrel for firing electroshock bullets contains a polymer case with rifling and an initiation device. The device for initiating low-voltage, high-voltage or shock ignition simultaneously serves as a source of energy for firing an electroshock bullet. The device is located in a high-pressure chamber in the chamber of the barrel. The rifling of the bullet location begins in the barrel zone with the largest wall thickness. A weapon for using interchangeable barrels for firing electroshock bullets contains a body, a trigger or a switch, and a firing initiation device. The body has a hinged or fixed attachment point for individual interchangeable barrels with a fixation of the hinge or the barrels that prevents their movement. The initiation device has the ignition of low-voltage, high-voltage or shock type, and a mechanical trigger mechanism or a source of low-voltage or high-voltage initiation signals are located in the body. The technical result is to ensure the impossibility of removal of the electric bullet by the offender until its full effect, to exclude the false activation of the electric bullet as a result of accidental acceleration, and to ensure the possibility of deactivating the electric bullet.

According to an embodiment of the present invention, a smart shell mounted on a gun barrel having a rifle formed on an inner circumference, and formed to hit a military target area by using a plurality of scattering pieces includes: a warhead part having the scattering pieces embedded therein; a cover part having one or more grooves provided on an outer circumference and coupled to cover the warhead part, and separated from the warhead part by a difference in rotational speed relative to the warhead part when close to the target area; and a propulsion part providing a propulsion force to the warhead part.

This utility model discloses a 40mm tear gas smoke-generating riot control round for riot guns, relating to the field of riot control ammunition technology. The utility model includes a projectile assembly with a launching component at its bottom, and the projectile assembly includes an upper projectile body. By employing a high-low pressure chamber staged pressurization structure, the high-pressure chamber first accumulates energy during propellant combustion, then releases it to the low-pressure chamber through a pressure relief hole, propelling the projectile assembly to embed in the rifling and fly at high speed, increasing the range to ≥200m, with a maximum of 400m. This solves the problems of insufficient chamber pressure and limited range caused by the single high-pressure chamber design in existing technologies, meeting the needs of long-range law enforcement. It uses CS instead of CN as the irritant; CS is chemically stable, non-carcinogenic after combustion, has low skin irritation, and degrades quickly, resulting in minimal environmental impact. This solves the problems of toxic residues and health hazards associated with CN irritants in existing technologies, improving the safety of weapon use.

A representative saboted firearm system includes: a firearm having a barrel assembly with an inner wall defining a longitudinally extending bore; and a round of saboted ammunition having a casing, propellant, a sabot, and a projectile, the casing extending from a striking end to a discharge end, the casing defining an interior, the discharge end having an aperture defining an opening, the opening communicating with the interior, the propellant being disposed within the interior, the sabot mounted at a discharge end of the casing, the sabot defining a receiving passage aligned with a longitudinal centerline of the casing, the projectile being at least partially disposed within the receiving passage of the reverse sabot; the inner wall of the barrel assembly being configured to engage an exterior surface of the projectile to direct the projectile.

The invention relates to a gun barrel having a main body (1) with an entry opening and an exit opening, wherein a bore (2) runs from the entry opening to the exit opening, which main body (1) has an inner surface (3), wherein the bore (2) has a diameter of at most 40 mm, and wherein the main body (1) essentially consists of steel, characterized in that a coating (4) is provided at least a part of the surface (3) of the bore (2), in that the coating (4) contains or is a ceramic coating layer (5). The invention also relates to a firearm and to a method.

A suppressor baffle has a cone comprising a solid wall and forming a generally conical rear portion of a baffle, the cone having an aperture adapted to cooperate with aligned apertures of additional suppressor components to form a bore through which a projectile may pass. The cone is also adapted to separate chamber volumes within a suppressor rearward and forward of the cone. A web of strengthening ribs is formed on a rearward-facing outer surface or on a forward-facing inner surface of the wall, the web comprising a plurality of longitudinal ribs and cross ribs, the ribs being spaced from each other.