Abstract: An electronic system included in a firearm, the firearm including an operating mechanism that is displaced to position a cartridge into a position for firing, and a body portion coupled to the operating mechanism. The electronic system includes a power generation element located in the body portion of the firearm. The power generation element is mechanically engaged with the operating mechanism such that a displacement of the operating mechanism causes the power generation element to move in a manner that generates electrical energy. At least a portion of the electrical energy generated by the power generation element is employed to power the electronic system.

Abstract: A barrel nut assembly for use on a variety of firearms is provided. The assembly is made up of a barrel nut, generally cylindrical in shape with a threaded central bore, and an externally threaded locknut which is used in conjunction with the barrel nut to secure a barrel to a firearm upper receiver. The barrel nut has an integral bushing on its exterior constructed to support either the gas tube or piston of the host firearm's operating system. The barrel nut is configured so that it may be independently and non-rotationally held within a vice or other fixture during installation of the barrel and while the locknut is tightened to a preset torque to hold the barrel in place. The barrel nut assembly affords the user a method and apparatus that aligns a central bore in the bushing with the opening in the upper receiver that receives an operating system component of the firearm while the barrel nut is independent of the torque applied to the locknut to properly secure the barrel to the upper receiver.

Abstract: A barrel for a firearm having a bore axis, a cartridge chamber, and an integrally formed locking sleeve with a locking space, with locking lugs, the locking sleeve has recesses for bolt head lugs of a bolt head to be inserted. The barrel has, in the direction towards the cartridge chamber, at least two centering ramps in the transition area between the recess for the lugs and the locking space in an oblique manner with respect to the bore axis. Further the recesses forming the bayonet-type groove, viewed in the direction of the bore axis, each have a profile which comprises an elliptical segment. The disclosure additionally provides a production process for such a barrel.

Abstract: A machine gun has a barrel, a receiver assembly comprising a cover, a receiver base and a butt; lock frame comprising an extractor and a gas piston; bolt, return mainspring with guiding bar, gas piston tube, flash absorber, trigger mechanism, gunsight, butt sighting appliances, trigger pull and loading case. A barrel is made of a preform produced of steel. The barrel is coated inside and steel comprises the additional chemical elements.

Abstract: An apparatus includes an energy source and an expansion structure. The energy source is configured to convey an amount of energy operable to increase a pressure of a compressible gas disposed in a chamber. The expansion structure is configured to be placed in fluid communication with the chamber and to receive a flow of the compressible gas in response to the increase in pressure. The expansion structure includes an inlet having a first diameter and an outlet having a second diameter greater than the first diameter and is configured to allow the compressible gas to expand as the compressible gas flows from the inlet to the outlet such that a supersonic free jet of the compressible gas exits the outlet. In some instances, the supersonic free jet of the compressible gas can accelerate, relative to the expansion structure, a projectile disposed outside of the expansion structure.

Abstract: A fixed-to-tilted silencer adaptor for three-lug attachments enables the use of tilting barrel gun silencers or fixed non-moving barrel gun silencers with different guns of the same caliber. The present invention enables users to utilize a gun silencer with the desired gun even if the gun silencer does not match the design of the gun. To do so, the present invention may comprise a recoil booster and a three-lug adaptor. The recoil booster is designed to accommodate the movement of a tilting barrel while facilitating the connection between the gun silencer and the gun's barrel. The recoil booster also securely receives the three-lug adaptor to facilitate the quick attachment of the recoil booster to the gun's barrel. The three-lug adaptor is designed to enable the quick attachment of the recoil booster to the gun's barrel without interfering with the movement of the gun's barrel when connected to a tilted barrel.

Abstract: A barrel for use in a firearm optimized to fire subsonic ammunition with high precision. The barrel groove diameter being within .0003 inch of the nominal bullet diameter and the barrel has at least 8 rifled grooves. Each of the plurality of rifling grooves has a sidewall formed from the bore diameter to the groove diameter, wherein the sidewalls formed are substantially parallel and the depth of each of the rifling grooves is shallow. The bullet is obturated as the bullet is forced down the bore. The plurality of shallow barrel grooves forming a plurality of raised lands upon the bullet. The obturated bullet having at least 50% lands formed around the circumference of the bullet body. The buffeting effect upon the bullet in flight by a transition shock wave upon the raised bullet lands is reduced by the plurality of bullet lands and the reduced height of each of the plurality of bullet lands.

Abstract: A brace assembly includes a firearm attachment member to which a pivot arm is pivotally attached at a pivot. The pivot arm includes a brace member at an end opposite to the pivot. The firearm attachment member includes firearm mounting structure which includes a receiver support shelf for supporting thereon a receiver of a firearm, and a distal abutment against which a forward end of a receiver and/or a slide of the firearm is abuttable.

Abstract: A quick disconnect system for muzzle devices having a receiver and a clutch assembly. The receiver has a central bore, outer bearing surface, threaded region, tapered shoulder, collar and a plurality of receiver teeth. The receiver teeth are situated around an inner perimeter of a rear-most edge of a third section of the central bore of the receiver. The clutch assembly includes a locking lug mount, clutch ring, spring, and retainer ring. The locking lug mount has a central bore with a non-threaded portion and a threaded portion. A plurality of locking lugs are situated around an outside perimeter of a central portion of the locking lug mount, and each of the locking lugs is configured to fit between two adjacent receiver teeth. The spring is situated between the clutch ring and the retainer ring.

Abstract: A caseless ammunition cartridge includes a unitary outer portion having forward, central section and rear sections. The forward section has an aerodynamic tangent ogive profile. The rear section has a cylindrical profile. The central section has a conical profile that transitions from the radius of the forward section to the radius of the rear section. An inner core, disposed within the unitary metallic outer portion, has a front portion encased by the forward section of the unitary outer portion, and a cylindrical rear portion disposed within the central and rear sections of the unitary outer portion. An annular cavity is disposed between the unitary outer portion and the rear portion of the inner core. A propellant is disposed within the annular cavity. A combustible seal covers the annular cavity to protect the propellant.

Abstract: A self-stabilizing small arm having a barrel assembly rigidly connected to a stock assembly. The small arm includes at least one shooter interface surface and a stabilization assembly controlling the relative position of the shooter interface surface and the barrel assembly or stock assembly. The stabilization assembly includes (i) at least one movement sensor; (ii) at least one actuator; and (iii) a controller using signals from the movement sensor to operate the actuator in order to compensate for unintended movement of the small arm.

Abstract: A method of modifying a firearm barrel comprising the steps of milling an existing barrel to create a sloped area with a larger diameter at a chamber end and a small action moving toward the muzzle end; placing an barrel nut on the barrel; placing a chamber bushing having a step with the step disposed at the chamber end; placing a brass pressing guide on the barrel and placing the barrel assemble with brass press guide and rear jacket tube in a press to press fit these components together; placing a gas block on the barrel adjacent to the rear jacket tube pressing the components tougher using the press; placing a front jacket tube on the barrel adjacent to the gas block and pressing the components tougher using the press; covering the threads of the barrel and placing a pour guide on the barrel; filling a void defined between the front jacket tube, rear jacket tube and barrel with a filler; placing a centering device on the barrel so that it is operatively associated with the front jacket tube to center the b

Abstract: A firearm suppressor is convertible from a suppressor with an open vent to a closed vent. When the vent is open gas is allowed to pass from a longitudinal barrel opening through which a projectile is fired into and through the vent. The gas passes from the vent into an annulus defined between a suppressor sleeve and a barrel section of the suppressor.

Abstract: A firearm suppressor mounting device has a body defining a body bullet passage on a bore axis and having a first attachment facility at a first end, the first attachment facility adapted to connect to the muzzle of the firearm, the body having a second attachment facility, a device adapted to removably and rotatably connect to the second attachment facility, a retention facility connected to the body and movable between an engaged position in which the retention facility abuts the device and a disengaged position in which the retention facility is spaced apart from the device, and each of the retention facility and the device having a plurality of engagement features that are engaged to each other to prevent rotation of the device with respect to the body when the retention facility is in the engaged position. The retention facility may encircle the bore axis.

Abstract: A self-stabilizing small arm having a barrel assembly rigidly connected to a stock assembly. The small arm includes at least one shooter interface surface and a stabilization assembly controlling the relative position of the shooter interface surface and the barrel assembly or stock assembly. The stabilization assembly includes (i) at least one movement sensor; (ii) at least one actuator; and (iii) a controller using signals from the movement sensor to operate the actuator in order to compensate for unintended movement of the small arm.

Abstract: A launcher system includes a launcher having a sealed breech and a barrel adapted to receive a projectile with a charge of propellant and a mechanism to vary the launch velocity by selectively controlling the propellant gases vented out of the projectile and into the barrel. A collar can be repositioned through rotation or sliding movement to selectively allow propellant gases to vent out of the barrel or stop propellant gases from venting out of the barrel. When the collar is in a closed or non-venting configuration, propellant gasses build-up pressure behind the projectile, resulting in a relatively high launch velocity and, when the collar is in the open or venting configuration, a relatively low launch velocity is produced. A sliding breech face and energy-absorbing plug can also be provided to further decrease launch velocity.

Abstract: Firearms with integrated suppressors have a receiver having a forward portion defining an internal bore, a tubular body having sides defining an interior, a selected portion of the interior receiving a barrel, the barrel having a rear end removably received in the internal bore, a selected portion of the interior receiving a plurality of baffles, and wherein at least one side of the body can be disassembled into a panel to enable access to the baffles. Each of the baffles may define an aperture. The barrel may have a central bore that defines a bore axis, and the baffle apertures may be axially registered with the bore axis. At least one side of the body may have an attachment facility that removably connects an accessory to the rifle. The barrel, baffles, and body may be of monolithic or modular construction.

Abstract: A kit for use with a modular weapon having a barrel and having an upper receiver defining a gas port and a barrel opening. The kit comprises an upper receiver plate for attaching to the upper receiver, and a barrel plate. The weapon barrel passes though concentric openings in the upper receiver plate and the barrel plate and is secured in the opening within the barrel plate. Another opening in the barrel plate receives a primary gas tube such that a rearward segment of the primary gas tube extends rearwardly from that opening and a forward segment of the primary gas tube extends forwardly from that opening. A forward end of a gas tube extension couples to a rearward end of the primary gas tube and a rearward end of the gas tube extension is received within the gas port when the kit is in use with the modular rifle.

Abstract: A noise suppressor system for attachment to a firearm including a barrel having a longitudinal axis. The noise suppressor system including the combination of: a flash suppressor adapted to be attached to the muzzle of the barrel coaxially therewith, a noise suppressor including a proximal mount assembly having a bore for coaxially receiving the flash suppressor, and a means for selectively coupling the noise suppressor system to the firearm.

Abstract: An apparatus having a body that attaches to a barrel of a firearm and a chamber disposed in the body that receives combustion gases from the barrel during a firing sequence of the firearm. Sensors, mounted on the body, capture a measurement of an initial line-of-sight to a target prior to the firing sequence and measure deviation from the initial line-of-sight after capture of the measurement of the initial line-of-sight and during the firing sequence. Ports, in communication with the chamber, are controllable to vary discharge of the combustion gases from the chamber. A feedback control unit receives the measurement of the initial line-of-sight and the deviation from the sensors and controls the ports to vary discharge of the combustion gases from the chamber during the firing sequence to generate forces on the barrel to drive the deviation to a minimum.

Abstract: A semi-automatic pistol is provided having a barrel, a frame and a slide. The slide is adapted for linear motion along the frame during a firing sequence and has a forward end and a block end. The forward end has an upper cam follower surface and a lower cam follower surface on the inside surface adjacent to the barrel. The barrel has a ramp cam surface adjacent to the chamber end of the barrel to effect locking and unlocking of the barrel relative to the slide during the firing sequence, a bottom cam surface and a top cam surface. The bottom cam surface and the top cam surface extend from the front end toward the chamber end of the barrel and each have undulating surfaces that moves against the lower cam follower surfaces of the slide to cause oscillation of the barrel while the slide moves during the firing sequence.

Abstract: A firearm is provided that includes a receiver, a stock, an elongated barrel and a muzzle. The barrel extends from the receiver to the muzzle and has a rectangular internal bore extending from the receiver to the muzzle. The internal bore has two short sides and two long sides. A plurality of teeth extends along one of the short sides within the internal bore. A disk-shaped bullet fitting within the internal bore may be fired from the firearm. A bullet case having a rectangular orifice is provided to chamber the disk-shaped bullet for propulsion through the rectangular internal bore of the firearm.

Abstract: A firearm is provided that includes a receiver, a stock, an elongated barrel and a muzzle. The barrel extends from the receiver to the muzzle and has a rectangular internal bore extending from the receiver to the muzzle. The internal bore has two short sides and two long sides. A plurality of teeth extends along one of the short sides within the internal bore. A disk-shaped bullet fitting within the internal bore may be fired from the firearm. A bullet case having a rectangular orifice is provided to chamber the disk-shaped bullet for propulsion through the rectangular internal bore of the firearm.

Abstract: To permit ease and efficiency for the extraction of spent cartridge cases from the cartridge chamber of a firearm barrel within a wide range of temperature conditions, the internal tapered surface of the body region of a cartridge chamber is prepared by establishing circumferentially spaced longitudinal straight or curved regions of the internal surface finish to create an internal cartridge chamber geometry having gradually tapered spaced longitudinally relieved linear or spiral areas having longitudinal linear or spiral lands between each of the relieved areas. The circumferentially spaced lands develop controlled impedance to rearward cartridge case movement on cartridge firing to effectively protect the bolt and extractor mechanisms of the firearm against early failure.

Abstract: Embodiments of the invention relate to a dynamic suppression mechanism for a firearm. Multiple chambers are aligned within a housing, with adjacently positioned chambers separated by a partition. A central aperture is provided within the partition(s) to accommodate the projectile and form part of the projectile path, and multiple relief ports are annularly arranged around the central aperture. As the projectile travels through the path and through the length of the housing, the relief ports use gas byproduct released from the projectile as an elastic medium to muffle concussive forces and mitigate flash as the projectile is released from the body.

Abstract: Embodiments of the invention relate to an inertial damping apparatus in communication with a dynamic suppression mechanism for a firearm. The apparatus is in communication with both a muzzle of a projectile release device and with a suppressor. The apparatus dynamically extends between different states of compression. The apparatus is comprised of a body and an axial sleeve, with the sleeve functioning to guide movement of the body and to hold a first end of axially variable material in position when subject to compression.

Abstract: A manufacturing procedure for a “bull barrel” model with silencer and “model bull barrel” with obtained silencer.

Abstract: A firearm is provided that includes a receiver, a stock, an elongated barrel and a muzzle. The barrel extends from the receiver to the muzzle and has a rectangular internal bore extending from the receiver to the muzzle. The internal bore has two short sides and two long sides. A plurality of teeth extends along one of the short sides within the internal bore. The internal bore has an interior barrel surface that is a high friction surface.

Abstract: Shotshell type ammunition includes a hull, a sabot disposed within the hull, and at least one projectile disposed within the sabot. The hull has a rimless first end that includes a primer for firing the ammunition. The hull also has a seat surface for seating the hull against a complementary seat surface in a firing chamber of a firearm. The seat surface is located a distance from an outer end surface of the hull at the rimless first end. The hull further includes an outer cylindrical side surface extending from the rimless first end of the hull to the seat surface of the hull. Methods of fabricating such ammunition includes forming such a hull, providing one or more projectiles within a sabot, and disposing the sabot with the one or more projectiles therein at least partially into the hull. Shotgun type firearms are configured for firing such ammunition.

Abstract: A unitary barrel, chamber and bolt region for a firearm is manufactured from a single piece of metal stock so as to precisely and consistently meet headspace requirements. A single piece of metal stock having a bore centerline is successively reamed based on a common datum to achieve precise headspace compliance. The unitary assembly is then profiled, again based on measurements from the datum, to provide a unitary barrel, chamber and bolt region without any form of juncture, headspace or harmonic limitations.

Abstract: A firearm is provided that includes a receiver, a stock, an elongated barrel and a muzzle. The barrel extends from the receiver to the muzzle and has a rectangular internal bore extending from the receiver to the muzzle. The internal bore has two short sides and two long sides. A plurality of teeth extends along one of the short sides within the internal bore. A disk-shaped bullet fitting within the internal bore may be fired from the firearm. A bullet case having a rectangular orifice is provided to chamber the disk-shaped bullet for propulsion through the rectangular internal bore of the firearm.

Abstract: A maneuver cartridge device for use in a self-loading firearm includes a barrel extending from a chamber to a muzzle side and having an intercepting device arranged on the muzzle side for intercepting a projectile. The barrel has a first barrel section that adjoins the chamber and a second barrel section that adjoins the first barrel section. The first barrel section has a first cross section corresponding to a caliber of the projectile and the second barrel section has a second cross section that is larger than the first cross section.

Abstract: An interchangeable barrel system and related method for a pistol includes a barrel insert having an anti-rotation protrusion and a receiver having a complementary configured socket configured for receiving the protrusion. An embodiment of a barrel insert includes a chamber for holding a cartridge and a locking mechanism configured for releasably securing the barrel insert to the receiver. In some embodiments, the locking mechanism comprises a threaded engagement between the barrel insert and receiver. The system allows barrel inserts of different calibers, configurations, and materials to be swapped with the receiver, and vice-versa.

Abstract: A semi-automatic pistol is provided having a barrel, a frame and a slide. The slide is adapted for linear motion along the frame during a firing sequence and has a forward end and a block end. The forward end has an upper cam follower surface and a lower cam follower surface on the inside surface adjacent to the barrel. The barrel has a ramp cam surface adjacent to the chamber end of the barrel to effect locking and unlocking of the barrel relative to the slide during the firing sequence, a bottom cam surface and a top cam surface. The bottom cam surface and the top cam surface extend from the front end toward the chamber end of the barrel and each have undulating surfaces that moves against the lower cam follower surfaces of the slide to cause oscillation of the barrel while the slide moves during the firing sequence.

Abstract: A viscoelastic barrel dampener operable to increase the accuracy of a weapon having a shroud, the shroud defining a shroud wall and a chamber within the shroud wall, a barrel, the barrel disposed within the chamber of the shroud and defining a barrel wall having an outer surface, and a viscoelastic dampening material, the viscoelastic dampening material disposed within and substantially filling a volume defined by the outer surface of the barrel and the shroud wall, wherein the barrel further includes one or more contour features adapted to disrupt the axial propagation of acoustic energy along the barrel wall. In at least one embodiment, the one or more contour features may include a plurality of parallel barrel walls, radial grooves, or steps formed in the outer surface.

Abstract: A shotgun has a telescoping barrel made of concentric barrel sections slidably engaged together. These include at least an inner barrel section and an outer barrel section. A grip on the outer barrel section aids telescopic movement. A locking pin secures or releases the barrel sections. The barrel sections have protrusions that interfere with further outward movement once fully telescoped out. The grip may have a channel to permit a pistol grip to slide onto the grip. A second pistol grip may be connected to the trigger. The butt of the gun may slide out to make a shoulder rest. A butt plate is connected to a rod that slides into and out of the shotgun. The rod has teeth that engage a spring-loaded arm to secure the rod in an extended position. A compression or tension spring may bias the concentric barrel sections in an extended or shortened configuration.

Abstract: A jetting device comprises a body, and an interior flow path within the body. The interior flow path comprises a flow section, an expansion section, and a shoulder formed at the intersection of the flow section and the expansion section. The length and diameter of the expansion section are configured to allow a portion of the pressure of the fluid downstream of the expansion section to provide power to a fluid flowing through the nozzle when the fluid is flowing through the nozzle.

Abstract: This invention is directed to a rifle barrel having a gas port for a gas operated weapon system comprising: an inner barrel; a gas redirection tube operably associated to the inner barrel so that expelled gas from a cartridge travels out of the gas port and into the gas redirection tube; a sleeve arranged around the inner rifle barrel defining a void between the rifle barrel and the sleeve surrounding the rifle barrel; and, filler material carried in the void defined between the inner barrel and the sleeve wherein the gas redirection tube is disposed within the filler material between the sleeve and the inner barrel.

Abstract: Systems and methods for using a cartridge case as a tool to install or remove firearm barrel attachments. The barrel attachment includes a channel for engaging a cartridge case rim. This rim channel provides mechanical leverage for rotating the barrel attachment around a bore axis of the firearm barrel. The rim channel may include a curved portion to increase the load-bearing contact area. The contact area between the rim of the cartridge case and the barrel attachment can be further increased by a half-moon insert.

Abstract: A harmonic barrel dampener operable to increase the accuracy of a weapon having a barrel. According to at least one embodiment, a harmonic barrel dampener comprises an outer portion that substantially encases or enwraps a significant portion of barrel, and wherein the harmonic barrel dampener further comprises at least one acoustic dampening material contained between the outer portion and a weapon's barrel, resulting in improved accuracy of projectiles fired from the weapon.

Abstract: This invention is directed to a rifle barrel having a gas port for a gas operated weapon system comprising: a forward gas redirection tube operably associated to said rifle barrel so that expelled gas from a cartridge travels out of said gas port and into said forward gas redirection tube; a rear gas connector operably associated with said forward gas redirection tube for receiving expelled gas traveling in said forward gas redirection tube; a rear gas redirection tube removably connected to said rear gas connector for receiving expelled gas and transferring said gas to the action of the weapons system to assist with the cycling of the weapons system action; a sleeve arranged around said rifle barrel defining a void between said rifle barrel and said sleeve; and filler material carried in said void defined between said rifle barrel and said sleeve wherein said forward gas redirection tube is disposed within said filler material between said sleeve and said barrel.

Abstract: A rigid composite structure has a bore formed in a metallic material and a super hard interior segment or segments disposed within the bore. Each segment may be lined adjacent to one another and held under compression within the bore. The segments may be made of super hard materials such as natural diamond, synthetic diamond, polycrystalline diamond, single crystalline diamond, cubic boron nitrate or other superhard composite materials which exhibit low thermal expansion rates and are generally chemically inert. The resultant rigid composite structure may possess higher tolerances to high pressures and high temperatures.

Abstract: Stacked munitions are launched at high velocity from a launcher by redirecting, to the barrel of launcher, the static load that would otherwise be borne by the nose the projectile in position three for launch. This is accomplished via a load-redirecting pusher plate comprising a load-receiving surface and a plurality of compression members.

Abstract: A gun barrel with a gun barrel liner and a breech ring, which are joined with each other by a bayonet thread. A continuous cavity is left between adjacent bayonet ridges of the gun barrel liner and the bayonet ridges of the breech ring that are located axially behind them or in front of them. A locking segment is inserted in at least one of the cavities that is formed in the installed gun barrel liner between adjacent bayonet ridges of the gun barrel liner and the bayonet ridges of the breech ring to prevent unintentional detachment of the gun barrel liner from the breech ring. The locking segment can completely fill the corresponding cavity.

Abstract: Various techniques are provided for firing blanks from firearms. In one example, a blank firing adapter includes a mount assembly operatively configured to be attached to a muzzle of a firearm. The blank firing adapter also includes a main body having an interior chamber. The blank firing adapter also includes an escape port positioned longitudinally forward of the interior chamber and not in communication therewith. The blank firing adapter also includes a barrier interposed between the escape port and the interior chamber. The blank firing adapter also includes a projectile receiving area positioned longitudinally forward of the escape port and configured to slow down a projectile from the muzzle therethrough.

Abstract: Exchangeable choke for a fire arm with a smooth gun barrel, whereby said choke is provided with mechanical coupling means to mount and dismount the choke, characterized in that the choke is equipped with additional sealing means so as to seal the choke, at least in one place, in relation to the gun barrel, as well as to prevent the choke from being unscrewed during the shooting.

Abstract: A firearm attachable bullet trap for use on a gas operated firearm having a compensator attached to the barrel. The bullet trap captures bullets from live rounds and provides an visual and tactile indication of live rounds having been fired. The bullet trap is designed for the shooting of blank rounds, but is adapted to handle live rounds having a bullet in a semi-automatic or automatic firearm.

Abstract: A locking system for a firearm attachment. The locking system having a rotating lock ring having a lock-and-release lever rotatably mounted thereto. The lock-and-release lever having a lock engagement surface optimally configured to forcefully engage a locking surface when in a locked orientation. The locking ring having a nonconcentric engagement surface that repositions in a radial direction when the locking ring rotates and the nonconcentric engagement surface is configured to engage the muzzle of a firearm for locking the muzzle attachment thereto.

Abstract: A recoil operating pistol has a barrel and slide with at least a pair of flat mating surfaces extending along a substantial length of both the barrel and slide parallel to each other on opposite sides of the barrel. The matching flat surfaces of the barrel and slide allow relative sliding motion between the slide and the barrel when the at least a portion of the barrel is received in the hollow interior of the slide.

Abstract: A damping device is disclosed which dampens movement of a weapon on an axis which is parallel to a longitudinal axis of the weapon.