Abstract: Apparatus and methods for easily, quickly and reliably longitudinally securing and rotationally locking a noise suppressor or other auxiliary device to the muzzle end of a firearm barrel, and to a fixture such as a flash suppressor affixed to the muzzle end of the firearm, and for easily, quickly and reliably removing the noise suppressor or other auxiliary device therefrom.

Abstract: A muzzle brake for a firearm, in accordance with one or more embodiments, may provide structural features that affect the flow characteristics of the combustion gases for reducing concussion to the shooter and/or to personnel to the sides of the shooter, as well as for directionally countering upward and sideward movement of the firearm's muzzle upon the firing of the firearm.

Abstract: An adjustable muzzle brake in which an interior volume of the muzzle chamber can be varied without the use of tools which allows shooters to adjust the flow of the propellant gases and thereby allow shooters to determine and select the optimum recoil for their shooting preference.

Abstract: A shock reduction muzzle brake 100 for the muzzle end of a gun barrel 106 (i) maintains sufficient rearward-facing surface area in the path of the expanding propellant gas to counter the recoil, while also (ii) guiding shock waves away from a path of a projectile 104 and (iii) decreasing the rate of base decompression to minimize decompression shock. The muzzle brake 100 includes (a) a tube 102 that defines a path for a projectile 104, and (b) multiple forwardly-inclined holes 122 extending through the side wall 116 of the tube 102 to divert propellant gases away from the path of the projectile 104. The forwardly-inclined holes 122 have an outlet of that is closer to the forward end 114 of the tube 102 than the inlet of the hole 122, thereby limiting the surface area that could reflect shock waves back onto the projectile 104. The holes 122 are sized to slow release of the base pressure to minimize decompression shock.

Abstract: Multiple improvements dramatically increase the reliability and accuracy of a handgun. By combining a plurality of improvements, the accuracy and reliability of a M1911-A1 is dramatically increased. The improvements include a modified sighting system that enables the user to accurately adjust for varying target ranges without losing sight of the targets or altering contact with the weapon. Lubrication notches are incised into the slide/frame interaction regions to prevent fouling. An ambidextrous safety is added that is retained by an interaction with the sear chip shaft. The hammer is modified to provide a region in which foreign matter can migrate to prevent fouling and improve reliability. And the interaction between the sear chip and the hammer is modified to provide a decreased trigger pull that maintains a positive and safe contact between the sear and the hammer at the sear ledge.

Abstract: A shotgun gas exchanger comprising a gas exchanger tube for connectively engaging with a shotgun barrel and a choke disposed in the gas exchanger having longitudinal axial channels on the exterior surface thereof, such that gas from the shotgun barrel flows through the longitudinal axial channels and gathers in front of the muzzle end of the choke to retard the release of pellets from a wadding cup exiting the muzzle.

Abstract: Flash suppressors having novel expansion features are disclosed. In one embodiment, a suppressor includes an attachment portion adapted to attach to a gun barrel, and a suppressor portion coupled to the attachment portion. The suppressor portion has a suppressor bore that is adapted to be aligned with a longitudinal axis of the gun barrel to allow a projectile from the gun barrel to pass therethrough. The suppressor bore is defined by at least one bore surface having at least one expansion groove disposed therein. The expansion groove may be partially-circumferentially disposed about the suppressor bore, or may include a plurality of expansion grooves. In another embodiment, a flash apparatus includes a suppressor portion having a plurality of longitudinally elongated members spaced apart about a circumference of the suppressor bore, each member being separated from adjacent elongated members by a longitudinal slot, at least one longitudinal slot having non-parallel sidewalls.

Abstract: The invention concerns a recoilless weapon (1) comprising a launch tube (3) for launching a projectile and a recoil dampener (2) for dampening recoil forces from the projectile, characterized in that the recoil dampener (2) comprises at least two recoil dampening mechanisms (8) comprising dampening means (11, 13, 14, 15) and that the recoil dampener (2) is adjustable in regard to a gunner and/or to projectile.

Abstract: The present invention relates to a silencer for reducing muzzle blast and noise of firearms or similar devices. The present silencer has a hollow cylindrical or other shape casing comprising front and rear end caps and an opening aligned along a longitudinal axis defining a passage for a projectile and propellant gases to emerge from the muzzle opening. A plurality of serially placed baffles of symmetrical or slanted orientation and intervening coaxial spacers are positioned within the casing and define a multitude of chambers among the baffles, spacers, and outer housing. The baffles shear propellant gases away from the projectile path and through openings or ports into additional chambers formed between the spacers and outer housing. The arrangement of baffles and spacers provides flow-impeding paths, dispersion, and controlled expansion of gases and lowers gas temperature to reduce audible noise and observable signature of the muzzle blast.

Abstract: A shotgun barrel of a construction that reduces recoil is provided. The shotgun barrel includes a smooth, non-rifled bore and a choke approximate the muzzle of the barrel. A plurality of vent holes through the barrel and extending into the bore in equal number and in alignment on opposing sides of the barrel along a length of the barrel that is inward of the choke, the sum of the transverse area of each of the plurality of vent holes not exceeding 50% of the muzzle area. A shotgun including the barrel of reduced recoil is also provided.

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 compensator and climb arrester has an axially-elongated hollow sidewall having an inner surface. Three apertured baffles with central apertures are fixed inside the sidewall spaced apart from one another to define three longitudinally-distributed gas-expansion chambers. Each baffle has a convex rear surface which meets the sidewall in a circular crease. Each chamber has one top port through the sidewall as well as a pair of opposite side ports. Each port has a one edge, a sill, which is closest to the crease. The distance between the sill and the crease defining a knee wall. Wherein, the expansion of the gases of a muzzle blast in the expansion chambers deflect in part off convex rear surfaces of the baffles and get checked in part by the knee-wall portions of each port ensuing the exhausting of the gases through ports across the sills thereof.

Abstract: A firearm noise suppressor having an internal base frame member with a plurality of inserts mounted thereto. In one form the suppressor is provided with a slip chamber allowing gas to be forwarded to a longitudinally forward chamber for pre-compression of gas therein.

Abstract: A flash suppressor for use with a firearm includes a generally cylindrically shaped housing having a series of horizontal groves about its exterior. An internal thread located at the proximal end of the housing is present for threadedly securing the housing to the muzzle of a firearm. There is a tapered chamber located between the internal threads and the opening which precedes the expansion chamber of the flash suppressor. The expansion chamber progressively expands being smallest at the proximal end and gradually increasing in diameter towards the distil end. Longitudinally extending, progressively helically shaped perforations are formed through the housing and in communication with the internal expansion chamber. These perforations are generally equally distributed about the housing except the bottom area which has no perforations present.

Abstract: A muzzle device configured to be attached to the muzzle region of a barrel. The muzzle device has a compensator region positioned longitudinally rearward from a flash suppression region. The muzzle device further is provided with adjacent compensator ports in communication by a longitudinally extending access vent.

Abstract: An adjustable muzzle brake in which an interior volume of the muzzle chamber can be varied without the use of tools which allows shooters to adjust the flow of the propellant gases and thereby allow shooters to determine and select the optimum recoil for their shooting preference.

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.

Abstract: A shock reduction muzzle brake 100 for the muzzle end of a gun barrel 106 (i) maintains sufficient rearward-facing surface area in the path of the expanding propellant gas to counter the recoil, while also (ii) guiding shock waves away from a path of a projectile 104 and (iii) decreasing the rate of base decompression to minimize decompression shock. The muzzle brake 100 includes (a) a tube 102 that defines a path for a projectile 104, and (b) multiple forwardly-inclined holes 122 extending through the side wall 116 of the tube 102 to divert propellant gases away from the path of the projectile 104. The forwardly-inclined holes 122 have an outlet of that is closer to the forward end 114 of the tube 102 than the inlet of the hole 122, thereby limiting the surface area that could reflect shock waves back onto the projectile 104. The holes 122 are sized to slow release of the base pressure to minimize decompression shock.

Abstract: A muzzle brake for a firearm, in accordance with one or more embodiments, may provide structural features that affect the flow characteristics of the combustion gases for reducing concussion to the shooter and/or to personnel to the sides of the shooter, as well as for directionally countering upward and sideward movement of the firearm's muzzle upon the firing of the firearm.

Abstract: The invention comprises an improved recoil control device comprising a bolt head and an inertia block or slider for use in a variety of firearms. In one embodiment, the bolt head and inertia block are articulated so that the displacement of the bolt head results in a force component outside the firing axis of the barrel of the firearm. The device can be incorporated into firearms of a variety of sizes and configurations to produce recoil reduction and/or weight reduction advantages.

Abstract: This invention is directed to a muzzle brake that can be attachable connected to a weapon system having a barrel comprising: a housing; a front opening defined in the housing having a diameter generally the same size as the caliber of the barrel to which the housing can be attached; an impact plane included in the housing having an angle of incident greater than 90 degrees defined between the impact plane and the longitudinal axis of the housing; an eddy plane included in the housing having an angle of incident defined between the eddy plane and the longitudinal axis of the housing that is greater than the incident of angle of the impact plane; and, a concave plane included in the housing and carried by the eddy plane; a forward port defined by the impact plane, eddy plane and concave plane in the housing so that a portion of the gas expelled from the barrel is deflected outward from the housing upon contacting the impact plane and a portion of the gas expelled from the barrel is deflected by the concave plan

Abstract: A muzzle brake for a firearm, the muzzle brake including structural features that affect the flow characteristics of the combustion gases for reducing concussion to the shooter and to personnel to the sides of the shooter, as well as for directionally countering upward and sideward movement of the firearm's muzzle upon the firing of the firearm.

Abstract: Apparatus and methods for easily, quickly and reliably longitudinally securing and rotationally locking a noise suppressor or other auxiliary device to the muzzle end of a firearm barrel, and to a fixture such as a flash suppressor affixed to the muzzle end of the firearm, and for easily, quickly and reliably removing the noise suppressor or other auxiliary device therefrom.

Abstract: This invention is directed to a rifle barrel and a method for modifying a pre-existing rifle barrel comprising dissembling said pre-existing rifle so that said barrel is removed from said pre-existing rifle placing said barrel in a sleeve having an inner diameter larger then said diameter of said barrel for receiving said barrel thereby defining a void arranged between said barrel and said sleeve when said barrel is placed in said sleeve reducing the outer diameter of said barrel near the breach end of said barrel so that said sleeve will cover said barrel up to the action of said rifle when said barrel is placed in said sleeve filling said void defined by said barrel and said sleeve with filler material attaching a weld-on thread assemble to said sleeve at the muzzle end of said barrel and assembling said pre-existing rifle with said barrel placed in said sleeve.

Abstract: Muzzle jump of projectile-firing guns and weapons systems is significantly reduced by creating a momentum, rotating in the direction opposite to the rotational direction of the momentum causing muzzle jump by redirecting not a gas flow produced by a blast of ammunition but redirecting a projectile traveling through the barrel. The barrel is bent in such a way that curvature of the bend is convex in relation to the support of the gun. The plane of the curvature coincides with the plane of the momentum created by recoil of the gun. Since the projectile possesses significantly greater mass than escaping gases, the contra-momentum is greater than what could be achieved by redirecting a flow of escaping gases so it could be sufficient to completely negate momentum created by recoil force.

Abstract: A choke for use with a shotgun is provided. In accordance with one embodiment the choke has a body that defines a bore with a longitudinal axis therethrough. The body is configured for engagement with a shotgun, and the bore is positioned for traversal of a wad and shot therethrough and out of an end of the bore. The body has a circumference, an inner surface, and outer surface. The body defines at least one port for venting gas from the bore that extends from the inner surface to the outer surface. The shape of the port at the inner surface is asymmetrical.

Abstract: A projectile firing gun or weapon barrel is adapted with a gas porting system having conduits and outlets specifically configured, positioned and adapted for maximizing reductions in muzzle jump and/or recoil in accordance with principles of reverse thrust. The conduits or flow tubes are contemplated to be configured to function as nozzles whereby varying the shape and size of the conduit walls can maximize the outlet velocity of gases flowing at subsonic as well as supersonic velocities and the stream of redirected gas flow can be concentrated. The system incorporates porting holes located further rearward than at the barrel muzzle, but at a proven safe distance from the barrel chamber, which porting holes are in fluid communication with gas conduits/nozzles.

Abstract: The present invention relates to a silencer for reducing muzzle blast and noise of firearms or similar devices. The present silencer has a hollow cylindrical or other shape casing comprising front and rear end caps and an opening aligned along a longitudinal axis defining a passage for a projectile and propellant gases to emerge from the muzzle opening. A plurality of serially placed baffles of symmetrical or slanted orientation and intervening coaxial spacers are positioned within the casing and define a multitude of chambers among the baffles, spacers, and outer housing. The baffles shear propellant gases away from the projectile path and through openings or ports into additional chambers formed between the spacers and outer housing. The arrangement of baffles and spacers provides flow-impeding paths, dispersion, and controlled expansion of gases and lowers gas temperature to reduce audible noise and observable signature of the muzzle blast.

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.

Abstract: A flash suppressor of the open prong type having a twist in its structure formed of alternating grooves and flutes or prongs provides a highly effective flash suppression for small and medium caliber weapons and especially for automatic weapons and machine guns when placed on the end of their barrels. The orientation of the direction of the twist of the structure is in a direction opposite to the direction of the rifling in its firearm barrel. Various objective laboratory tests and subjective user evaluation on its performance prove out its effectiveness in terms of mitigating visible flash on shorten machine gun barrels as well as standard full length barrels used in critical helicopter black out operations using night vision equipment. In addition, precise aiming of a weapon equipped with the inventive flash suppressor exhibits lower dispersion of actual projectile impact compared to conventional flash suppressors.

Abstract: A device for suppressing noise from a firearm. In one aspect, the suppressor has an elongate body that defines a bullet pathway extending longitudinally therethrough. The elongate body may define a plurality of adjacent chambers spaced along its longitudinal axis. The suppressor may also have at least two elongate body shells configured to selectively substantially envelop the elongate body and substantially enclose each of the adjacent chambers. The body shells of the suppressor are designed to be easily removed to clean the chambers of the suppressor.

Abstract: An unguided projectile-accelerator system includes an enclosure, first and second charges, first and second projectiles, and a recoil-absorbing mechanism. The enclosure has an open first end and a closed second end, and the first and second charges are disposed within the enclosure. The first projectile is disposed within the enclosure between the first charge and the first end and is operable to exit the enclosure via the first end and to generate a first recoil in response to detonation of the first charge. The second projectile is disposed within the enclosure between the first charge and the second charge and is operable to exit the enclosure via the first end and to generate a second recoil in response to detonation of the second charge. The recoil-absorbing mechanism is disposed adjacent to the enclosure and is operable to absorb at least a respective portion of each of the first and second recoil.

Abstract: An orifice entry diverging multi vane conical venturi diffuser for a mortar tube that provides a surface at the discharge end of a mortar tube for measuring or sensing instruments. The internal,vanes comprise the primary surface and the conical venturi wall comprises the secondary surface. This apparatus allows a solid object of the equivalent diameter of the entry orifice when propelled by gas pressure to travel through the diffuser into the open atmosphere while at the same time providing an increasing volumetric flow path for the discharge of the propellant gas. The vanes axial parallel primary surface area is used to provide a port for instrumentation. The area between the primary and secondary surfaces of circumferentially spaced vanes provides the gas flow channels when the center section formed by the vanes primary surfaces is obstructed by a solid object with the equivalent diameter of the entry orifice.

Abstract: A muzzle gas reduction device has upper and lower elongated, curved sections that define a barrel shape that is open to the sides. The upper section has a narrower width than the lower section. A plurality of cone-shaped, open, combs are interposed between the upper and lower elongated sections, along a length thereof. The device is coupled to the end of a barrel of a firearm, preferably a PAN disrupter. The configuration of the cones and the differing widths of the upper and lower sections cause muzzle gasses to be re-directed rearward and upward, reducing recoil.

Abstract: An apparatus and method for easily, and reliably attaching a noise suppressor or other auxiliary device to a standard A2 flash compensator typically located at the muzzle end of a firearm barrel and for easily, and reliably removing the noise suppressor or other auxiliary device there from through the novel ideal of providing an apparatus which consistently indexes a noise suppressor on the wrench flats of a standard A2 flash hider.

Abstract: Disclosed is a manifold device containing two equidistant manifold openings which adapt to shotgun chokes to counteract muzzle rise, felt recoil, and muzzle blast in addition to the selectable shotgun choke which controls the shot pattern. The two manifold openings are located in the upper 180 degree portion of the manifold to counteract forces by discharging gases substantially upwards and backwards. A manifold saddle with sufficient curvature for accommodating a second barrel can be utilized for double barrel weapons. The manifold is held in place to maintain the upper 180 degree direction by a choke stop, clamp, or other attachment.

Abstract: Muzzle jump of projectile-firing guns and weapons systems is significantly reduced by creating a momentum, rotating in the direction opposite to the rotational direction of the momentum causing muzzle jump by redirecting not a gas flow produced by a blast of ammunition but redirecting a projectile traveling through the barrel. The barrel is bent in such a way that curvature of the bend is made convex in relation to the support of said gun or systems. The plane of said curvature coincides with the plane of the momentum created by recoil of the said gun or system. Since the projectile possesses significantly bigger mass than escaping gases, the created contra-momentum is much bigger than the one which could be achieved by redirecting a flow of escaping gases so it could be sufficient to completely negate momentum created by recoil force of said projectiles firing gun or weapon system.

Abstract: A method for releasably attaching a compensator assembly adjacent a muzzle end of a barrel of a firearm. The compensator assembly includes an attachment means on its rear end. The barrel has a firing axis and includes a threaded end opposite the muzzle end and defines a recess formed adjacent the muzzle end. The firearm itself has a frame defining a threaded aperture. The method includes moving the attachment means into engagement with the recess; tensioning the attachment means within the recess in a direction substantially parallel to the firing axis; inserting a mating tool into the muzzle end of the barrel; rotating the barrel via the mating tool, thereby causing the threaded end of the barrel to threadedly engage with the threaded aperture; and halting the rotation of the barrel via the mating tool when a predetermined torque is achieved.

Abstract: A latch for mounting a suppressor to a firearm is disclosed that allows interfacing with and securely attaching to the weapon's flash hider without the need to use threads and the rotational movement commonly associated with attaching suppressors to a firearm. The latch consists of a primary latch and a secondary latch. The primary latch moves in a vertical plane, fits into the grooves on a standard flash hider, and is rotationally indexed to the flash hider when locked. The secondary latch attaches to the top of the primary latch, securing the primary latch when it is fully locked by pivoting around and downwards, and locking to the suppressor. The primary latch compensates for the considerable tolerance range of the outside diameter of the flash hider. The latch has minimal thermal coupling to the suppressor and engaging/disengaging the primary latch plate and the secondary latch can be accomplished with one hand.

Abstract: In an exemplary electromagnetic launcher, a housing with breech and muzzle is slidably supported in a carriage supported on a trunnion. First and second electrical contacts are mounted in the carriage toward an axis of the trunnion. The first and second contacts are electrically connectable to receive electrical power from an electrical power supply. First and second augmentation conductors are disposed aft of the trunnion and are electrically connected to the first and second electrical contacts. First and second main conductors extend from the breech toward the muzzle. A current cross-over connection is disposed toward the breech and electrically connects the first and second augmentation conductors with the first and second main conductors, respectively. The first and second electrical contacts and the first and second augmentation conductors may be engaged in slidable electrical contact over a portion of the first and second augmentation conductors, thereby accommodating recoil motion.

Abstract: A bolt-on muzzle brake having an angled base (5), clamps (2) to secure it to a firearm barrel (12), and a tube (6) at the end of the angled base (5) that redirects the recoil producing gases. The muzzle brake can be attached to a barrel without threading it on the barrel. The muzzle brake can also be attached to multiple sized barrels, different caliber barrels, and barrels with front sights all with the same muzzle brake.

Abstract: A firearm barrel assembly having a gun barrel with a muzzle opening on a distal end, a shroud coaxially surrounding at least a portion of the barrel, the shroud having a distal portion extending beyond the muzzle opening defining a shroud front region having a distal end portion, a proximal portion extending proximally from the muzzle opening defining an annular region between the barrel and shroud, the shroud front region and annular region in fluid communication with substantially no obstruction between the shroud front region and the annular region, and a front wall disposed at the distal end portion of the shroud. The wall has an opening to allow passage of a projectile fired from the firearm.

Abstract: A low lethality firearm, comprising a launcher (12) for bullets, also comprises a device for regulating the speed of the bullet (13), adapted for varying the speed of the bullet in the mouth of a barrel, comprising gas bleeding means (17, 19) from the inside of a barrel (16) of the launcher (12), wherein these gas bleeding means (17, 19) can be divided.

Abstract: A system for connecting an accessory to a firearm having an enlarged muzzle portion has a body with a bore sized to closely receive the enlarged portion. The body has a stop to limit the insertion depth of the muzzle. A gate is received by the body for movement along the path perpendicular to the bore axis. The gate has a recessed area sized to receive the enlarged muzzle portion. A spring generates axial force to retain the muzzle portion within the recessed area. Compression of the spring enables movement of the gate to shift between an open and closed position, so that the accessory may be removed or installed when in the open position, and secured when in the closed position.

Abstract: Apparatus and methods for easily, quickly and reliably longitudinally securing and rotationally locking a noise suppressor or other auxiliary device to the muzzle end of a firearm barrel, and to a fixture such as a flash suppressor affixed to the muzzle end of the firearm, and for easily, quickly and reliably removing the noise suppressor or other auxiliary device therefrom.

Abstract: An apparatus for mass-tuning a gun barrel comprises a body portion configured for attachment to the gun barrel. The body portion includes a main bore therethrough and defines a plurality of predetermined mass attachment locations. Each mass attachment location comprises a mating portion configured to engage a complimentary mating portion of a mass attachment. In some embodiments, mass attachments can be used to configure the total mass of the device.

Abstract: A method and apparatus counteracts the muzzle lift of a firearm resulting from recoil, and a firearm has an integral counteracting structure. A port extends from an inner surface of the firearm barrel bore to an outer surface of the barrel, forward of the location that the propellant ignites, to an occluding structure located beneath the grip surface of the firearm. When the propellant is ignited, and the projectile passes the relief port, a portion of the propellant gas exits the bore prior to the muzzle end, travels through the propellant gas relief tube, and exerts a force on the occluding structure. The force acts downward on the firearm, counteracting the recoil-induced muzzle lift.

Abstract: An apparatus and method for easily, quickly and reliably attaching a noise suppressor or other auxiliary device to the muzzle end of a firearm barrel and for easily, quickly and reliably removing the noise suppressor or other auxiliary device there from. My invention also provides for adjusting the host firearms point of impact by changing the orientation of the noise suppressor in relation to the host firearms bore.

Abstract: A bolt-on muzzle brake having an angled base (5), clamps (2) to secure it to a firearm barrel (12), and a tube (6) at the end of the angled base (5) that redirects the recoil producing gases. The muzzle brake can be attached to a barrel without threading it on the barrel. The muzzle brake can also be attached to multiple sized barrels, different caliber barrels, and barrels with front sights all with the same muzzle brake.

Abstract: Provided is a method of assembly for a noise suppressor using specific welding and assembly procedures. By welding the inner portion of a noise suppressor to form a semi complete core an outer tube can then be placed over said core to reinforce the noise suppressor as a whole. The described process allows for an overall reduction of tube wall thickness and provides for a reduction of weight. By affixing each baffle, spacer, end cap and mount together as a whole the strength of the entire unit is multiplied. My method is not restricted to any particular baffle technology but may in fact be incorporated into any design where circumferential fusion welds may be used.