Abstract: A sealing member configured to fill the gap between a charging handle and an lower receiver. The sealing member may be disposed in a charging handle that forms a seal against the receiver to prevent the escape of discharge gas from the interface between the charging handle and the receiver. The sealing member may be disposed on the top surface of the lower receiver at the charging handle-lower receiver interface.

Abstract: A firearm breech device (100) has a breech body (110) with a lower part with functional elements for interaction with an upper part of a handle part of the firearm. A firing pin (130) is linearly movable within a bore (120) of the breech body (110) with a leading end face (111) adjacent to the cartridge chamber (200) of a barrel of the firearm. The firing pin can be propelled by means of a pulse generator (140) which is also linearly movable within the bore (120) from a retracted basic position into an advanced firing position. In the advanced firing position, an ignition pin (138) of the firing pin (130) strikes an ignition element of a cartridge (300) to fire a shot.

Abstract: Disclosed herein is an enhanced fire control system for firearms having semi-automatic firing mechanisms. The system comprises a primary trigger, a secondary trigger, and a trigger stop having a stop riser. The trigger stop's stop riser limits breaking a trigger sear interface between the primary trigger and the firearm's hammer. The system is intended to reduce the risk of a firearm being unintentionally discharged as a result of the trigger being contacted with straps or other equipment the user is carrying or wearing, or as a result of contact with something in the environment.

Abstract: An improved jig for manufacturing a firearm lower receiver is comprised of a power tool mount; an adapter; a guide plate with plate screws; a rear support with mounting screws; a front support; and at least one of a carriages with at least one locating pin. A guide plate is disposed below the top surface of a lower receiver in conjunction with an adapter. The jig is a universal fitment and includes a bearing to support a rotary tool and at least one guiding feature can be used to facilitate in the guidance of the rotary tool without placing the rotary tool in direct contact with any of the guidance features. A removable locating pin is situated a long the front and rear takedown pin holes of a firearm receiver that is not threaded and is provided with at least one of a pull, string or other handle.

Abstract: A handgrip for a firearm is provided for ergonomic angular adjustment. The ergonomic adjustable handgrip illustratively includes an attachment to a firearm, an upper grip portion, and a lower grip portion. The lower grip portion can be released by a push button, adjusted to a user preferred angle relative to the upper grip portion, and locked into the angle by releasing the push button.

Abstract: A firearm comprising an upper receiver and a charging handle is disclosed. A charging handle is coupled to the upper receiver and comprises a handle assembly rotationally coupled to a main body about a first and a second pivot point. The handle assembly includes a first handle having an edge nearest the main body and a latch extending from the first handle parallel to the main body for interfacing with the upper receiver in a first position, a second handle having an edge nearest the main body, and a push rod positioned between the edge of the first handle and the edge of the second handle, such that when force is applied to the second handle, energy is transferred through the second handle to the push rod and to the first handle, moving the latch into a second position.

Abstract: A handgrip for a firearm is provided for ergonomic angular adjustment. The ergonomic adjustable handgrip illustratively includes an attachment to a firearm, an upper grip portion, and a lower grip portion. The lower grip portion can be released by a push button, adjusted to a user preferred angle relative to the upper grip portion, and locked into the angle by releasing the push button.

Abstract: Provided in one aspect is an annular gas ring within or adjacent a barrel to increase the efficient transfer of pressurized gas to one or more gas ports, which may communicate the high-pressure gas from near the chamber distally to a piston to cycle the action of the firearm. Provided in another aspect is a modular quick-disconnect barrel assembly for long-stroke gas-operated firearms such as the AK-47, which allows barrel and gas systems to be replaced together simply by pulling a single pin, thereby allowing the caliber of the firearm to be instantly changed to 12-gauge shotgun or any dimensionally smaller rifle or handgun round. A novel forward-charging handle system is also provided that works with the modular quick-disconnect barrel assembly.

Abstract: A forend for use with a pump action firearm having a barrel with a magazine tube arranged adjacent and parallel thereto. The pump action firearm further includes an action slide assembly slidably receiving the magazine tube and the action slide assembly has a distal end and an action slide cap configured to engage the distal end of the action slide assembly. The forend comprises an elongate body having a U-shaped cross-section configured to be secured to the action slide assembly by an action slide cap engaged to a distal end of the action slide assembly. A guide defining a barrel receptacle is configured for keyed engagement to an interior of the elongate body to prevent rotational movement of the guide relative to the elongate body with the barrel receptacle facing toward the top of the U-shaped cross-section of the body. The barrel receptacle is configured to nest a radial portion of a barrel exterior, wherein the guide limits axial rotation of the forend about the magazine tube relative to the barrel.

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: A method of locking a barrel of a firearm with respect to a barrel slide is provided.

Abstract: A replacement slide assembly for a pistol, the slide assembly having a barrel assembly with a barrel and a firing chamber. The barrel assembly also has a guide member which is a protrusion that extends horizontally outward from the barrel assembly. The replacement slide assembly also includes a housing with an interior wall that defines a groove that receives the guide member. The guide member and the groove in the housing are located forward of a firing pin assembly also mounted within the housing. The slide assembly or any firearm also includes an adjustable sight assembly that permits interchangeability between different types of sights without requiring that the firearm be re-sighted.

Abstract: Example handguns, such as pistols and revolvers, have specifically curved or contoured shapes that make them particularly suited for fitting comfortably within front, rear or side pants pockets. In some examples, the handguns can be completely concealed within standard pants pockets.

Abstract: A charging handle for a firearm includes a fixture and a lever mounted for pivotal movement to the charging handle. The fixture is pivoted to the charging handle for movement between a first, locked position, and a second, unlocked position. The lever is pivoted to the fixture for movement between first and second positions. In the first position of the lever and the first position of the fixture, the lever is stored proximate to the firearm in a low-profile arrangement. In the second position of the lever and the first position of the fixture, the lever is coupled to the fixture to move the fixture into the second position. In the second position of the lever and the second position of the fixture, the lever is deployed outward from the firearm and is available to be retracted backward so as to cycle the charging handle.

Abstract: A handgun curved to correspond more closely with the contours of a person's body, achieving a comfortable fit when the handgun is worn for any appreciable amount of time on the person's body. The handgun housing is inclusive of a top portion, an intermediate portion, and a grip portion, which may be separately connected or integrally formed parts sharing a radius of curvature to form asymmetric left and right sides, particularly a concave side and a convex side. This asymmetry extends beyond the grip portion and includes at least a portion of the trigger guard and a portion of the magazine securing clip.

Abstract: A pistol has a housing, a barrel slide, a barrel and a locking device for locking the barrel to the barrel slide. The locking device is formed by a head of the barrel, a locking block and a pair of locking bodies. The locking bodies engage the barrel slide by the action of the locking block and thus lock the barrel to the barrel slide. The locking block has two first wedge surfaces which are symmetrical about a longitudinal center plane. Each locking body is an elongated cylinder having a second wedge surface which faces the other locking body and interacts in a sheetlike manner with the first wedge surfaces of the locking block. Each locking body has an engagement surface which faces away from the other locking body and is intended for engaging respective recess of the barrel slide.

Abstract: A drive, having a quick stop mechanism, for a breech is axially adjustable relative to a weapon barrel, and includes a motor, two counter-rotating chains and sprocket wheels that guide the chains. Engaging cams and control cams are integrated into the chains. A slide mounted at the bottom of the breech is displaceable transversely to the direction of fire and has a groove that the engaging cams engage to entrain the breech in a forward or reverse motion relative to the direction of fire. The engaging cam transporting the breech forwards is displaced from the groove while the control cam displaces the slide simultaneously to its center position via its ascent ramp, thereby allowing breech rest periods in the forward limit position. Firing causes the slide to move from the center position to the left hand side whereas it remains in the center position when no shot is fired.

Abstract: A locking block device (100) provided in the region of a cartridge chamber (121) of a handgun barrel (120) has a locking block (110) for releasably locking the barrel (120) to a breech prior to firing, and has a control member (111) having a control guide (112) for swinging out the barrel (120), after firing, for the purpose of separating the barrel (120) from the breech, and further has a feed ramp (140) formed in the region of a stop member (130) of the locking block (110) for feeding a cartridge, stored in a magazine of the handgun, into the cartridge chamber (121) following ejection of a fired cartridge. A modular design capable of being adapted to meet specific requirements is achieved in that the feed ramp (140) is formed on a ramp member (150) capable of being separated from the locking block (110) and releasably locked to the locking block (110).

Abstract: This disclosure relates to launchers and launcher systems for discharging or launched payloads to downrange targets, and the methods of attenuating or offsetting recoil in such launcher systems. Examples of payloads that can be deployed with the disclosed launcher apparatus include chemical, biological, pyrotechnic, marker, tracer, signaling, non-lethal, explosive, smoke, and similar payloads.

Abstract: An obturator (100) for firearms comprises: a structure (101); a closing head (102), in particular a rotary one, arranged at an end (103) of the cylindrical structure (101); at least a resting surface (104) defined on the closing head (102) to engage the bottom (F) of at least one cartridge (C); at least one through channel (105) extending longitudinally through the cylindrical structure (101) for operatively engaging at least one striker of the firearm. The obturator comprises deformation means (108) associated with the closing head (102) to at least partially deform a firing capsule (109) and/or a bottom of a cartridge (C) loaded on the firearm.

Abstract: Among other things, methods and apparatus regarding collection, dissemination and display of information concerning paintball loaders and markers are disclosed. A loader includes a heads-up display, electronic devices for gathering, storing and disseminating information, and an antenna for sending and receiving data. Wireless voice communications among paintball players is possible via associated headsets.

Abstract: In embodiments, a modular rifle includes a lower receiver assembly, an upper receiver assembly, and a coupling mechanism. The upper receiver contains a bolt carrier and a housing enclosing the recoil spring and rod. Within the housing is a counter bore shoulder against which the recoil spring rests. Integrated into the top face of the bolt carrier are compartments, upon which the housing is mounted. Holes in the front of the housing and the upper receiver assembly accommodate the rod. Containing the recoil spring and rod within in the housing mounted to the bolt carrier allows the modular rifle to have a folding, collapsible, or otherwise non-fixed stock. Attached to the rod is a retaining tab, the depression of which allows for the release of the upper receiver from the lower receiver for disassembly of the rifle.

Abstract: A firearm includes a frame having at least one interior receptacle defined by opposed interior walls and having opposed guide rails extending from the opposed interior walls, and at least one modular housing disposed in the receptacle and accommodating at least one operational component of the firearm. The modular housing is defined by opposed sidewalls having opposed guide channels formed therein, the guide channels being configured to selectively engage the guide rails to facilitate the aligning of the modular housing with respect to the interior receptacle. The at least one operational component and the modular housing are pre-assembled together as an integrated unit for drop-in insertion into the receptacle during assembly of the firearm.

Abstract: Firearms and firearm components are constructed from bonded multi-metallic base materials comprising at least two dissimilar metallic materials having different properties, such as weight, density, wear resistance, durability, hardness, and the like, bonded to one another. The components are fabricated such that the metallic material having higher impact- and wear-resistance is positioned at areas that experience impact, or that include bearing points, wear points, and interfaces with other components, while a lighter weight metallic material is positioned at component locations that don't have rigorous material property requirements. The bonded multi-metallic materials may be explosively bonded multi-metallic materials.

Abstract: A firearm including a barrel having a chamber and an integrally formed upper receiver having a passageway, an accessory rail extending the complete length of the upper receiver, and a guidance feature extending along the passageway. The firearm also includes an operating rod having an anti-bounce mechanism, a bolt that is rotated counter-clockwise to lock against the chamber, a bolt carrier having a safety extension disposed below the bolt that prevents a hammer from striking a firing pin until the bolt is locked against the chamber, a lower receiver, a recoil spring assembly, and a fire control group. The bolt includes a polymer spring that biases a sliding extractor against the base of a cartridge. The sliding extractor is disposed at an angle ranging from thirty degrees to fifteen degrees on the bolt face to provide a low ejection angle from the firearm.

Abstract: Semiautomatic or fully automatic firearm, in particular in the form of a rifle or a pistol, containing a barrel whose rear barrel end is in the form of a cartridge chamber into which a projectile can in each case be inserted from the rear; a breech body which is arranged in a breech guide between the cartridge chamber and a rear wall such that it can move in the longitudinal direction between an open position, which releases the cartridge chamber in order to load a projectile, and a closed position which closes the cartridge chamber, wherein, in the closed position, the breech body closes the cartridge chamber at the rear and is used as an opposing bearing for the cartridge case; characterized in that at least one permanent magnet is provided such that, at least in the closed position and in the positions close to the closed position, its magnetic field forces the breech body to the closed position, such that the magnetic force of the at least one permanent magnet simulates a higher mass of the breech body, w

Abstract: A system allowing either right or left-side (ambidextrous) ejection of a shell from a weapon is provided. The system may comprise a bolt receiver having left and right-side ejection ports; a firing bolt assembly having left and right-side alignment slots and an extractor claw; and a relocatable ejection port cover assembly disposed alternatively in either the right or left-side ejection port to eject a shell from the opposite open ejection port. The ejection ports and the cover assembly may be formed having bilateral symmetry to facilitate relocation of the cover assembly from one side to the other. The cover assembly comprises a mounting flange, an ejection port plug disposed within either of the ejection ports, and a rail configured for being disposed within the alignment slots and including an extended portion and a contact face that engages the shell so that it is ejected from the open ejection port.

Abstract: A construction for a firearm comprises an action, including a barrel, and a stock. The action is seated to the stock on a three-point bearing system comprising three bearings arranged in a triangular array. This provides for firm seating for the action and results in a more accurate firearm.

Abstract: An automatic firearm that includes a unitary portion including a human interface and a barrel defining a longitudinal dimension. A slidable portion is attached to the unitary portion so as to permit the slidable portion to slide in the longitudinal dimension. The slidable portion includes at least a portion of a firing chamber. In addition, a lock is adapted to selectably fix the slidable portion relative to the unitary portion. Also, a chamber attached to the unitary portion and an inertial member permitted to move inside the chamber and urged into a first position, the inertial member adapted to translate into a second position, displaced from said first position by at least 0.1 cm, upon firing of the firearm, in which second position the inertial member begins to change the position of the lock, thereby permitting the moveable portion to move relative to the unitary portion.

Abstract: A handgun having a frame with a barrel. The barrel has a muzzle end and a breech end. A handgrip is mounted to the frame to pivot about an axis. The handgrip is movable between a firing position and a storage position. The axis is movable relative to the frame along a path extending in a direction of the barrel wherein the handgrip is movable along the length of the frame to the storage position wherein the handgrip is adjacent the frame.

Abstract: The invention relates to the trigger and firing mechanisms for pistols. The inventive pistol comprises a frame (1), a barrel (2) with a cartridge chamber (3), a cartridge feeding mechanism (4), a fired case removing mechanism and a breech block return spring (12). The breech block (13) is slidable parallel to the barrel axis and comprises a firing mechanism, which consists of a firing spring stop (14), a firing spring (15), a striker (16) having a firing pin tip (17), a cocking notch (18) and rest pads for a firing spring (19) and for a striker spring (20). The breech block (13) includes a mechanism for sinking the firing pin tip (17) in a position, which makes possible the chambering of a cartridge, said mechanism having a striker spring (21), the force of which in a precompressed condition is greater than the precompressed force of the firing spring (15). The striker spring stop (22) is installed in the breech block (13) for fixing the precompressed force of the striker spring (21).

Abstract: Apparatuses, methods, and kits are disclosed for preventing quick release of a magazine from a magazine well of a Sa vzor 58 rifle without the need to substantially disassemble the rifle, thereby providing a means to modify Sa vzor 58 rifles to bring such rifles within permissible limitations of certain local, state, and federal guns laws.

Abstract: A unitary barrel, chamber and action assembly 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 action assembly without any form of juncture, headspace or harmonic limitations.

Abstract: A modular firearm is disclosed. The firearm that can be configured to operate using ammunition of different calibers via interchangeability of only a few parts. The firearm includes a foldable butt stock assembly for quickly and easily converting the firearm from an extended operating configuration to a compact transport configuration, and vice-versa. Additionally, the firearm includes a modular hand guard assembly having multiple mounting platforms for accommodating a variety of different accessories.

Abstract: A combustion powered, pneumatic augmented gun system is disclosed. The combustion powered, pneumatic augmented gun system may include a gun barrel, a combustion chamber, an augmentation air plenum in fluid communication with the combustion chamber, a trigger valve assembly, a fuel supply tank connected to the combustion chamber disposed to provide a combustible fuel to the combustion chamber, and an air compressor connected to the augmentation air plenum disposed to provide compressed air into the augmentation air plenum. When a projectile is to be fired, fuel is combusted in the combustion chamber providing a flow of gases into the gun barrel. Compressed air from the augmentation air plenum is released to augment the acceleration of the projectile in the gun barrel when pressure in the combustion chamber drops.

Abstract: A handgun having a frame with a barrel. The barrel has a muzzle end and a breech end. A handgrip is mounted to the frame to pivot about an axis. The handgrip is movable between a firing position and a storage position. The axis is movable relative to the frame along a path extending in a direction of the barrel wherein the handgrip is movable along the length of the frame to the storage position wherein the handgrip is adjacent the frame.

Abstract: A combination for a firearm which creates an improved firearm. An upper chassis is created which is formed from a first housing and a second housing which, once independently formed, are permanently secured to each other. The upper chassis provides a first opening through which a spent cartridge is discharged and a second opening which permits a variety of attachments to be selectively attached to the upper chassis to customize the firearm to the user and activity.

Abstract: A lightweight and low cost semi-automatic rifle includes an upper receiver, a lower receiver, and a forend fabricated from injection-molded polymers. The rifle permits firing .22 LR or similar low-power ammunition from an AR-15 style frame, operates on the blowback principle, and provides a fully functional bolt catch and extractor/ejector/deflector.

Abstract: A lightweight, compact, collapsible, and easily concealed pistol. The pistol has a barrel and a handgrip which are pivotally attached to the frame. The barrel is locked to the frame by a barrel lock. Operation of the barrel lock releases the barrel, allowing the barrel to pivot for reloading. In the collapsed position, the handgrip folds to cover the frame and the trigger, which is retracted therein. In the firing position, the handgrip is rotated away from the barrel, and locks in place via grip locks disposed in the frame, and the trigger extends from the frame. The hammer is pivotally attached to the frame. The hammer incorporates a firing pin. A safety located on the hammer retracts the firing pin within the hammer to prevent firing the pistol in the safe position, and extends the firing pin to fire the pistol.

Abstract: A firearm modification method and kit assembly includes the removal of the pistol style hand grip mount in a manner that precludes the use of the originally mounted pistol style hand grip, the modification of the hand grip mount to add a shoulder stock mount, and the installation of a shoulder stock in place of the originally mounted pistol style hand grip and hand grip mount.

Abstract: A magazine doubler includes a resilient body with two cavities each having upstanding ribs to carry magazines therein at different heights. A bracket and spaced screws are mounted medially between the front and back of the body to squeeze the body to generally conform it to carried magazines therein. A blocking element is used to replace the top round in one magazine to prevent the upper round from being dislodged during use of the doubler. Such element is tethered and biased by a rubber band looping around one of the screw shanks.

Abstract: A multi-caliber ambidextrously controlled firearm that includes an adjustable ejection system to facilitate the ejection of spent cartridge casings from a firearm. The adjustable ejection system includes an ejection port defined by an aperture in the firearm and a deflector. The deflector is attached to the firearm to adjust the size of the ejection port and may be attached at one of at least two attachment positions of the firearm. The adjustable ejector system includes an ejector selectively attached to the firearm at one of at least two ejector attachment positions. The improved firearm also includes an ambidextrous magazine catch system for selectively retaining a magazine within a firearm. The magazine catch system includes a first button opposite a second button such that either button may be actuated by a user to release the magazine retained with the firearm.

Abstract: A firearm apparatus and a method of firing ammunition therefrom, where the method utilizes a barrel (12) having a breech end surface (40) and immovably affixed to frame (10), a stand pressure surface (32), and a cartridge container (16) with a cartridge case (26) therein and countermass main body (18) movable in opposite directions. Gas from a deflagrating propellant moves the movable members and applies directionally opposite forces upon the breech end surface (40) and the stand pressure surface (32), which results in the force cancellation and ensures that the barrel (12) remains stable during firing. This solves the problem of the angle of departure and contributes to a high accuracy of shooting.

Abstract: A method of firing of arms which utilizes both action and reaction forces in the process of firing. The action force propels the projectile (14) while the opposite in direction reaction force is used with an independent freely moving inert mass (20) in which a cartridge case (18) resides. Since the movement of the inert mass (20) does not affect the position of the barrel (12) prior to the projectile (14) leaving the muzzle, the barrel (12) remains steady during firing, thus achieving very high accuracy of shooting.

Abstract: A single trigger sequential firing mechanism for a double barrel firearm fires the two barrels or chambers successively upon successive trigger actuation, without need for a separate selector switch. The firing pins are driven by linear motion of corresponding pistons or plungers, rather than by arcuate motion of pivoting hammers. The present invention is adaptable to various double barrel gun configurations, but is particularly adaptable for use with over and under double barrel shotguns. Three different embodiments are disclosed, with each having identical parts and components with the exception of the upper portion of the trigger body. The first embodiment fires the two barrels successively upon successive pulls of the trigger. The second embodiment fires the two barrels after a first trigger pull and a subsequent release of the trigger. Finally, a third embodiment fires the two barrels upon successive trigger releases, after the trigger has been pulled.

Abstract: A charging handle for a firearm having a receiver, a bolt and bolt carrier reciprocating within the receiver and a gas tube for directing powder gases to cause operation of the bolt carrier and bolt within the receiver. The charging handle is a generally elongated member having a forward end portion and a rearward end portion with the rearward portion having a portion that extends outside of the receiver that is sized, shaped and adapted to be grasped by a hand of a shooter using the firearm. The charging handle has grooves and gas deflecting surfaces for diverting and deflecting powder gases to protect the shooter from powder gases that may develop around the charging handle when the firearm is fired.

Abstract: A muzzle-loading or breech-loading rifle which comprises a bolt (27), which is mounted, rotating, on the rear of the receiver casing of the barrel and rotates between a position of opening and one of closing. In the bolt is mounted a percussion means (30), which is arranged in line with the barrel when the bolt is in the position of closing. A cocking mechanism (25) is mounted in the receiver casing (21') in parallel with the said barrel and turned towards the percussion means (30) when this is in line with the barrel.

Abstract: A nightstick and shell-firing device having a club portion and a handle portion. The club portion has an internal barrel, and the handle portion is movable to actuate a shell-firing mechanism contained within the handle portion. The shell-firing mechanism has a firing pin and trigger pivotally mounted to engage the firing pin, and a mechanical stop in the handle to pivotally release the trigger engagement when the handle is pulled rearwardly. A safety device that is quickly and easily manipulated is incorporated to prevent unintended firing of the shell.

Abstract: A police baton sidearm having a baton main body and a crosshandle which is ttached in a perpendicular manner to the baton main body at a position longitudinally displaced from the geometric center of the baton main body. The baton main body also houses a recessed trigger ahead of the crosshandle and means for launching a projectile. In order to achieve impact insensitivity a double action only firing mechanism is employed. The baton main body is constructed in two parts to accomodate breech loading and various connection schemes including interrupted and multilead threads on abutting portions of the baton main body. Guide rods or a hinge mechanism may be provided to accomodate one-handed loading. The police baton sidearm may also be equipped with gunsights and a laser pointing device for improving the accuracy of the user's aim.

Abstract: Disclosed is a single shot pistol having a barrel 2, a grip 4, a trigger 6 and a firing pin 44, with a receiver 22 secured to the barrel. A cap 28 is threaded onto the receiver for relative rotation. Striker mechanism 52 extends from the trigger to the firing pin and is actuated by camming mechanism 70 in the cap upon the cap being rotated relative to the receiver.