Abstract: A barrel-mountable accessory to couple to a muzzle end of a firearm barrel, including: a first side having an opening arranged to fit around the muzzle end of the barrel; and a second different side having a taper pin opening; and a taper pin insertable into the taper pin opening of the barrel-mountable accessory, wherein the taper pin includes: a length including a first region arranged to mate with a taper interface provided on the muzzle end of the barrel; the length further including a second region to contact a sidewall that defines the taper pin opening of the second side; and means for driving the taper pin into the taper pin opening, wherein the driving means is located on an end of the taper pin.

Abstract: The present invention is an imprint device for imprinting a unique identification mark on a surface of an object with imprinting particles of different sizes that increase uniqueness and without the need for electric power. The imprint device includes a vertical member, a hammer member, a trigger assembly, a charging unit, a barrel and at least one pocket. In the operative configuration, a trigger of trigger assembly is activated such that hammer member impacts a cartridge filled with at least one munition of imprinting particles and releases imprinting particles. The imprinting particles travel through the barrel where acceleration is increased and impact on surface is made to form microcraters and unique identification marks. The imprinting particles can be of same size, material and shape or they can be of different sizes, material and shapes or the combination thereof for increasing uniqueness.

Abstract: A folding stock with barrel toggle clamp has a body defining a receptacle adapted to receive the action, a clamp mechanism on the body operable to move between a released position and a clamped position, and the clamp mechanism operable to bias the barrel toward the receptacle to secure the barrel to the action. The clamp mechanism may be a multi-link linkage. One of the links may have an adjustable length. The clamp mechanism may include a lever that is flush against an external surface of the stock when in the clamped position. The clamp mechanism may include a V-block defining a channel adapted to receive a protrusion on the receiver and an angled surface on the barrel to clamp the barrel to the receiver. The clamp mechanism may include a lever pivotally connected to the body to pivot on a first horizontal axis lateral to the body.

Abstract: A shooting controller of a paintball gun includes a mechanical shooting apparatus, an electric shooting apparatus, a pneumatic apparatus, and a switching apparatus. Operating the switching apparatus may switch the paintball gun between a mechanical shooting mode and an electric shooting mode. In the mechanical shooting mode, the mechanical shooting apparatus drives the pneumatic apparatus to shoot a paintball when a trigger is pulled. In the electric shooting mode, the electric shooting apparatus drives the pneumatic apparatus to shoot a paintball when a trigger is pulled.

Abstract: A folding stock with barrel toggle clamp has a body defining a receptacle adapted to receive the action, a clamp mechanism on the body operable to move between a released position and a clamped position, and the clamp mechanism operable to bias the barrel toward the receptacle to secure the barrel to the action. The clamp mechanism may be a multi-link linkage. One of the links may have an adjustable length. The clamp mechanism may include a lever that is flush against an external surface of the stock when in the clamped position. The clamp mechanism may include a V-block defining a channel adapted to receive a protrusion on the receiver and an angled surface on the barrel to clamp the barrel to the receiver. The clamp mechanism may include a lever pivotally connected to the body to pivot on a first horizontal axis lateral to the body.

Abstract: Threaded metal inserts for polymer lower receivers and hybrid polymer lower receivers comprising one or more of such inserts, as well as kits and methods therefor are disclosed. A threaded metal insert has a substantially circular aperture configured with screw threads to releasably yet connectively interface with a separate traditionally threaded firearm component such as a buffer tube or a pistol grip screw. Inserts can be any overall shape so long as it can be integrally embedded within a traditionally threaded portion of a polymer lower receiver in a way that does not interfere with normal operation of an assembled firearm and leaves exposed the internal threading of the insert. Inserts can also comprise textural features on the exterior surface configured to permanently interface with and embed the an insert into molded polymer.

Abstract: The firearm comprises a firearm frame, a barrel sleeve mounted in a rotatable manner on the firearm frame, and at least one rotation pin which extends between the firearm frame and the barrel sleeve to guide the sleeve around a rotation axis. The rotation pin and the firearm frame, or said pin and the barrel sleeve, lie in abutment with each other by means of complementary sliding surfaces, at least one sliding surface being borne by a wear component connected in a releasable manner to the rotation pin, to the firearm frame and/or to the barrel sleeve. The invention also relates to a kit for a firearm.

Abstract: An interchangeable trigger assembly for firearms, particularly for over/under shotguns, which can be applied within a break action of a gun, by insertion in a lower opening of the break action; the assembly includes two detachable portions: a firing unit and a trigger unit, the firing unit including firing members; the trigger unit including at least one trigger which acts on actuation members of the firing members.

Abstract: A hand guard installation mechanism for securing a hand guard over the barrel of a firearm includes a tapered locking element that extends at least partially through the hand guard and interfaces with a surface of the barrel nut of the firearm. A fastener mates with the locking element, drawing the locking element at least farther into the hand guard and against the surface of the barrel nut. As the locking element is drawn against the barrel nut, the hand guard is tightened against the barrel nut such that the hand guard is secured in place against the receiver of the firearm.

Abstract: Disclosed herein is a method of manufacturing two or more gun barrels, the method comprising: machining (103) a single metal block to form a barrel preform having the outer shape of at least a first gun barrel and a second gun barrel; drilling (105) a first hole through the first gun barrel to form a first barrel bore; and drilling (107) a second hole through the second gun barrel to form a second barrel bore. Advantages include the barrels being integrally attached to each other and so a soldering operation to attach the barrels to each other is avoided.

Abstract: A firearm has a frame with an interchangeable barrel that is mounted to the frame through a tool-less knockdown pin. The barrel has ports in a smooth-bore section and no ports in a rifled-bore section, and the ports are progressively spaced, with the ports closest to the rifled-bore section having a greater distance between the ports than the ports closest to the muzzle. Preferably, the firearm is a multi-chamber design such as a revolver with a firing cylinder or a multi-barrel breech-loader that holds multiple rounds of ammunition together with a storage-firing clip while stored in an ammunition compartment and also when loaded into the firing chambers and discharged by the firearm. The frame preferably has a trigger mechanism with a sear assembly that includes a block assembly with a wedge block that translates on a guide rod and a disconnect block that is supported by a disconnect rest.

Abstract: A barrel assembly for firearms including one or more tubes associated with a mono-block, characterized in that the mono-block has one or more cylindrical protrusions which allow the connection of one or more of the tubes and the subsequent joining thereof by welding, adhesive bonding, forcing, etcetera. The method for manufacturing the barrel assembly is characterized in that it includes the steps of: providing a mono-block which includes one or more front cylindrical protrusions, one or more partial chambers axially aligned with the protrusions, and corresponding collars for the cartridge seats, extractor seats, and closure members such as closure tenons or other members; all the members are completed with their final dimensions; performing an overall heat treatment of the mono-block and of the barrels; connecting the tubes, which constitute the barrels of the firearm, by welding, adhesive bonding, forcing, etcetera, to the protrusions.

Abstract: A barrel holder for a drop-down barrel weapon with at least one tapped hole for accommodating an interchangeable barrel which ends in a ring shoulder for supporting the edge of a cartridge, wherein a first circumferential section of the ring shoulder is constructed as an axially movable cartridge extractor, and the remaining second circumferential section of the ring shoulder is formed by a separate adapter part which is inserted in modular fashion into the barrel holder.

Abstract: A firearm with a tilting barrel (1) with the possibility of setting a change of the tilting direction of the barrel (1) containing a breech block (5) for securing the barrel, the breach block containing on a part of its perimeter a locking surface (11) for securing the firearm against its tilting in the direction opposite the locking surface (11). The locking surface can be rotated around the longitudinal axis of the breech block (5) for setting the change of the tilting direction of the barrel (1).

Abstract: A firearm with a tilting barrel (1) with the possibility of setting a change of the tilting direction of the barrel (1) containing a breech block (5) for securing the barrel, the breach block containing on a part of its perimeter a locking surface (11) for securing the firearm against its tilting in the direction opposite the locking surface (11). The locking surface can be rotated around the longitudinal axis of the breech block (5) for setting the change of the tilting direction of the barrel (1).

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 smooth-bore barrel semi-automatic shotgun include a frame comprising a breech. A barrel is slidingly mounted on the frame relative to the breech. A slide-bolt assembly, which slides relative to the breech, is adapted to close the barrel. A friction spring opposes the barrel's sliding movement relative to the frame.

Abstract: A muzzle-loading firearm includes a breech plug for mating, non-threaded engagement with a housing located at the breech end of an axial bore of the firearm barrel. The plug includes a cylindrically-shaped body member having opposite first and second ends and an outer surface between the ends and configured so that when the plug is positioned within the housing, the outer surface is spaced close to the inside surface of the housing to facilitate insertion and removal of the plug from the housing. The body member is formed with a primer chamber for receiving and retaining a primer or a percussion cap at the first end, and a passageway for fluidly communicating the primer chamber with a powder charge at the second end. The body member may have a powder chamber for receiving and retaining at least part of a powder charge at the second end when the firearm is loaded.

Abstract: A hold adjustment device between fore-end iron and action body in a break-open firearm comprising at least one barrel (13) mobile by rotation about a fixed hinging point (15) arranged on an action body (14) between an aligned closed position and a disengaged position rotated open with respect to the action body (14), a tenon (18) fixed at the bottom to the at least one barrel (13) for hooking with a fore-end iron (16), comprising a block (21), or cursor, axially mobile with respect to the fore-end iron (16) and suitable for interfering with the tenon (18), an adjustment pin (26) carrying on its stem-shaped portion (27) a plurality of ring-shaped springs (28), as well as a rear axial binding (30), in which the elastic adjustment device of the fore-end iron-action body hold (20) is suitable for giving a suitable hold and/or the recovery of the loss of hold due to the wear of the fore-end iron-action body coupling.

Abstract: A break down triple-barrel shotgun includes three barrels, having two bottom barrels and one top barrel positioned on top of the two bottom barrels. In this respect, the triple-barrel shotgun has features of both side by side and over and under shotguns. The triple-barrel shotgun has simple break down mechanical features and provides increased shot opportunities with the reliability of a breakdown shotgun. As a result, the number of shells that are jammed is lowered or eliminated in comparison with conventional three shot shotguns. Also, the cleaning, maintenance, and care of a shotgun having a three shot capability is simplified in comparison with conventional three shot shotguns. The subject triple-barrel shotgun is especially useful for waterfowl hunting for which a maximum of three shot capability is mandated. The triple-barrel shotgun allows the use of three interchangeable choke tubes, that allow the shot patterns to be changed or adjusted with respect to pattern density.

Abstract: A break-action firearm with a breech housing, a barrel section that can pivot about a hinge bearing on the breech housing, and a removable fore-end, which contains on its front end a locking mechanism and on its rear end a bearing section for pivoting connection to the breech housing. This provides an easy-to-manufacture fore-end of the break-action firearm with minimal overall height, such that the hinge bearing grasps hinge pin, which project laterally inwards from the breech housing and which engage in lateral recesses on opposing side surfaces of a fastener section of the barrel section. In addition, the bearing section has bolts, which project inwards with at least one lateral contact surface and which lead to contact on corresponding abutment surfaces on the two side surfaces of the fastener section.

Abstract: A break-action firearm with a breech housing, a barrel section that can pivot about a hinge bearing on the breech housing, and a removable fore-end, which contains on its front end a locking mechanism and on its rear end a bearing section for pivoting connection to the breech housing. This provides an easy-to-manufacture fore-end of the break-action firearm with minimal overall height, such that the hinge bearing grasps hinge pin, which project laterally inwards from the breech housing and which engage in lateral recesses on opposing side surfaces of a fastener section of the barrel section. In addition, the bearing section has bolts, which project inwards with at least one lateral contact surface and which lead to contact on corresponding abutment surfaces on the two side surfaces of the fastener section.

Abstract: A barrel balancing device for collapsible firearms (20) wherein at least one barrel (9) which is rotatable about a fixed hinging point (7) arranged on a action body (6), wherein an open-close top lever (13) is provided between a closed aligned position of the at least one barrel (9) and the action body (6), and a position disengaged and rotated upon opening of said at least one barrel (9) with respect to said action body (6), the at least one barrel (9) being carried by an iron fore-end (8), wherein at least one elastic or viscoelastic group (21, 22, 23, 24, 25, 26) is foreseen which interacts between the iron fore-end and the action body to oppose the falling motion of the at least one barrel (9), once the open-close top lever (13) is unlocked, and to realize a balancing push with respect to the weight of the at least one barrel (9) when the collapsible firearm (20) is closed.

Abstract: A TASER and a vertical grip are combined to be attached to the stud post under the forend or the barrel of a conventional long arm. A TASER may also be combined with the forend or barrel of a conventional long arm itself. Stud posts come standard on certain long arms like the M-16 rifle. Stud posts can be installed on single shot and pump action shotgun forends as well. The TASER power supply can serve as a power source for a strobe lamp, which may be sighted by rescuers either visually or with infrared night viewing or other special viewing equipment for miles. The optical signal could be produced in the infrared, visible light and ultraviolet light regions of the electromagnetic spectrum. The signal lamp is inserted into a TASER's firing chamber in lieu of an ammunition cartridge.

Abstract: A barrel balancing device for collapsible firearms (20) wherein at least one barrel (9) which is mobile for rotation about a fixed hinging point (7) arranged on a action body (6) is foreseen, wherein an open-close top lever (13) is foreseen between a closed aligned position of the at least one barrel (9) and the action body (6), and a position disengaged and rotated upon opening of said at least one barrel (9) with respect to said action body (6), the at least one barrel (9) being carried by an iron fore-end (8), wherein at least one elastic or viscoelastic group (21, 22, 23, 24, 25, 26) is foreseen which interacts between the iron fore-end and the action body to oppose the falling motion of the at least one barrel (9), once the open-close top lever (13) is unlocked, and to realise a balancing push with respect to the weight of the at least one barrel (9) when the collapsible firearm (20) is closed.

Abstract: A system and method for manufacturing a mid-grip high-powered pistol by modifying an existing rifle receiver, wherein a portion of the original trigger is removed, a new trigger is added in a position forward of the partially removed original trigger, and the new trigger is coupled to the remaining portion of the original trigger via an extension, wherein a recoil lug is added to the rifle receiver to handle the recoil, a plurality of different length barrels can be coupled to the new pistol, and a pivot pin diameter and location of a forearm lug prevent creation of an illegal rifle.

Abstract: The cartridge ejector has a spring loaded ejector slide supported by the barrel pivot block for siding motion from a seated position to an eject position. The slide has a finger configured to engage the cartridge casing rim when the casing is seated at the breech end and the slide is at the seated position. Opposite the finger is a catch captured by a sear. In response to opening the breech the slide snaps to the eject position to eject and throw the cartridge casing from the breech.

Abstract: Binary and ternary electrocatalysts are provided for oxidizing alcohol in a fuel cell. The binary electrocatalyst includes 1) a substrate selected from the group consisting of NiWO4 or CoWO4 or a combination thereof, and 2) Group VIII noble metal catalyst supported on the substrate. The ternary electrocatalyst includes 1) a substrate as described above, and 2) a catalyst comprising Group VIII noble metal, and ruthenium oxide or molybdenum oxide or a combination thereof, said catalyst being supported on said substrate.

Abstract: A break open sporting firearm with one to four barrels that lock up in line directly behind the chambers for strength and rigidity.The load from firing is taken up by two or more circularly spaced lugs in the breech engaging with mating lugs on the frame.A rotating breech plate slider and hinge within the breech are the functioning means for this invention.

Abstract: A one-shot weapon includes an external grip, a profiled receiver attached to the grip, and a supporting base hingedly attached to the receiver. A sleeve is connected to the supporting base, and a barrel is disposed in the sleeve. A firing block has a cube-shaped head mounted on a top part of the receiver and abutting against a vertical wall of the receiver. The firing block is interchangeable on the receiver and allows for annular or central firing. A trigger connected to the receiver is operable by a trigger tang. A barrel release connected to the receiver defines a trigger guard for protecting the trigger tang. The receiver has an adjusting mechanism for enabling adjustment of a trigger stroke. A safety mechanism is pivotably attached to the receiver.

Abstract: A breech load pistol and conversion kit which may be adapted to the frame of a semi-automatic pistol, such as a Government 0.45 pistol. The present invention may provide a modified reinforced slide which is slidably mounted to the pistol frame and is adapted to include a pivotable barrel assembly mounted thereto. The barrel preferably is suitable for target pistol accuracy. The barrel assembly may be pivoted exposing the breech end for single shot loading for target shooting applications. The conventional semi-automatic pistol magazine or clip may be replaced with a modified clip acting as a breech release actuator having a lever mechanism which is operable to release a latch holding the barrel assembly in engagement with the slide. The present invention also provides a pistol with a gas relief port. The present invention further provides a rim ejector for ejecting spent cartridges using a camming action occurring during pivoting of the barrel assembly to a loading position.

Abstract: A breech load pistol and conversion kit which may be adapted to the frame of a semi-automatic pistol, such as a Government 0.45 pistol. The present invention may provide a modified slide which is slidably mounted to the pistol frame and is adapted to include a pivotable barrel assembly mounted thereto. The barrel preferably is suitable for target pistol accuracy. The barrel assembly may be pivoted exposing the breech end for single shot loading for target shooting applications. The conventional semi-automatic pistol magazine or clip may be replaced with a modified clip acting as a breech release actuator having a lever mechanism which is operable to release a latch holding the barrel assembly in engagement with the slide. The present invention also provides a pistol with a gas relief port. The present invention further provides a rim ejector for ejecting spent cartridges using a camming action occurring during pivoting of the barrel assembly to a loading position.

Abstract: A firearm has a plurality of parallel barrels arranged uniformly circumfetially about a center axis. A hammer is translational from a cocked position to a fire position along said center axis. It has a firing pin offset from the center axis in correspondence to the spacing of the barrels from the center axis. The hammer is pivotal about said center axis during cocking to advance the firing pin from an aligned position in respect of one barrel to an aligned position in respect of a succeeding barrel. The firearm comprises a trigger guided for translation rearwardly from a rest position. A sear, connected to the trigger via a ramp formation, is arranged, on depression of the trigger, to engage the hammer to cock it. Progressive depression of the trigger progressively displaces the sear via the ramp formation to a release position in which the hammer is released to translate from its cocked position to its fire position under resilient bias.

Abstract: Articulated connection between the break-open action and the at least one barrel of a rifle with two coaxial pairs of articulation members, the two articulation members (1a and 2a) of each pair complementing each other, and respectively one articulation member being provided at the break-open action (1) and, respectively, at the corresponding sidewall of the barrel (20). These articulation members (1a and 2a) exhibit a coupling profile (P1 and P2, respectively) ensuring a shape-mating connection between the break-open action (1) and the barrel (20) also transversely to the firing direction, this coupling profile permitting utilization of the axial pressure (S) produced during firing for generating a component force that is perpendicular to the aforementioned axial pressure (S) and counteracts the spreading apart of the sidewalls (1b) of the break-open action (1).

Abstract: A barrel locking mechanism for a break-open-action gun having a barrel and a mechanical section rotatably engaged with each other by a hinge-pin. It has a lug secured to the barrel and having a delining surface. While a stationary receiver is integrally mounted on the mechanical section. On the top of it, a movable receiver having a delining surface corresponding to that of the lug is vertically movably mounted through a spring. When the gun is locked, the lug moves downwards depressing the movable receiver against the spring. As a result, intimate contact of the corresponding surfaces is obtained in order to receive the load when the gun is discharged.

Abstract: A hinge device for break-open type firearm comprises two pair of arcuate ridges on the breech slidably received in complementary grooves formed in parallel sidewalls of a receiver. One pair of ridges and complementary grooves is located forwardly of the hinge axis, with one ridge and its associated groove on each side of the ridge, and the other pair of the ridges and complementary grooves is located rearwardly of the hinge axis. In the closed position of the firearm, the ridges and grooves are generally upright, so that their flanks or sidewalls include a large angle with the line of action of the recoil forces.

Abstract: An improved firearm. The width of the firearm does not exceed the minimum barrel size which will safely contain the chamber pressure of its designated caliber of ammunition. The firearm is further shaped, contoured and constructed for ready concealment on the person of a law enforcement officer. The side surfaces of the firearm are formed so that the purchase or "frictional forces" between the side surfaces and the body or clothing of a law enforcement officer tend to maintain the firearm in the desired position on the person of the officer. A special trigger-hammer mechanism prevents the gun from discharging if accidentally impacted or dropped and said trigger-hammer mechanism also requires that the hammer-firing pin be poised for firing by pulling the trigger, thus not allowing the firearm to be "cocked", further preventing an accidental discharge if the weapon is jostled while unattended.

Abstract: The frame of a hand pistol has in its forward end a pair of spaced furcations between which the lug on a removable gun barrel is pivotally mounted by means of an adjustable mounting pin, which permits the barrel to be pivoted between an open or loading position, and a closed or firing position. The adjustable pin comprises an Allen-head screw having a cylindrical head positioned snugly in a circular bore formed in one furcation, and a reduced-diameter, externally-threaded shank, which extends coaxially through a bore in the barrel lug, and which is threaded into an annular nut that is positioned snugly in a registering bore in the other furcation.

Abstract: A portable lightweight rifle which is primarily intended for use as a survival rifle. The rifle is readily disassembled into two assemblies for storage or ease of transporting, without requiring any separable fastener. A supply of ammunition is carried in a hollow stack tube. Both a rimfire embodiment and a centerfire embodiment are disclosed, and stampings or other relatively inexpensive and lightweight components are extensively used in both embodiments.

Abstract: This invention relates to safety devices for shotguns preventing wrong sized cartridges from lodging in shotgun barrels.

Abstract: A gun comprising a stock having a lock housing and a barrel pivotable relative to the lock housing and having a forked member provided with guide grooves engaged by guide ribs on a locking block so that as the gun is opened the grooves slide up the ribs and the block pivots on the lock housing.

Abstract: A shell cut-off latch for use in a break-open firearm having a magazine tube mounted parallel to the firearm barrel. The cut-off latch functions to retain cartridge(s) in the magazine tube when the firearm is in the break-open position and is cammed out of latching position when the firearm is in closed position and the action assembly and bolt means are in the forward, ready-to-fire position.

Abstract: A pistol-type signal launcher having a spring-actuated hammer carrying the firing pin, a pivotally mounted barrel releasably retained in firing position by a plunger which is biased toward the barrel support cam by a spring which also biases the trigger toward cocked position, moving the sear into engagement with the hammer base; the hammer spring acts on the hammer through a rebound cam.