Abstract: A firearm using blowback action has a barrel which is movably mounted within a shroud which is fixedly mounted on the firearm's frame. A gas space is formed between the barrel and the shroud by a difference between the inner diameter of the shroud and the outer diameter of the barrel. At least one gas port provides fluid communication between the bore of the barrel and the gas space. During firing of a cartridge, pressurized gas in the gas space applies a force to the barrel which moves relatively to the shroud away from the muzzle end of the firearm to engage a slide or bolt, helping to move it out of battery and extract the spent cartridge casing. Gas is vented to the atmosphere through a gas vent defined between the barrel and the shroud in fluid communication with the gas space.

Abstract: The present invention relates to firearms. In some cases, the firearms include a firing pin; a first ignition chamber that is configured to house a round of ammunition and to move proximally with respect to the firing pin so that when the round is in the first chamber and the firearm is fired, a portion of the round is struck against the firing pin. In some cases, the firearms also include a follower configured to be movable proximally and distally within the firearm and to be biased against a primer or proximal end of the round such that the follower is configured to selectively hold the round within the first chamber as the first chamber moves proximally, and such that proximal movement of the follower stops when the round strikes the firing pin, so that the follower acts as a bolt face for the round. Other implementations are also described.

Abstract: A customizable firearm is disclosed. The firearm can perform one or more functions, including firing a bullet, firing a less-than-lethal projectile, and/or providing light. In some cases, the firearm includes a main frame component having an inner cavity, wherein a barrel is slidably received within the cavity so as to selectively slide back and forth within the cavity. In some cases, a proximal end of the barrel comprises a bullet chamber. In such cases, the barrel fires the bullet by carrying the bullet proximally and striking it against a stationary firing pin. In other cases, a firing pin is attached to a distal end of the barrel. In such cases, the barrel discharges the firearm by moving the firing pin distally and striking a cartridge at a distal end of the main frame. In some cases, the barrel rotates between a safe and a fire alignment. Other implementations are described.

Abstract: The pistol comprises a frame (1) containing a barrel (4) slidably mounted. The pistol further comprises a firing mechanism comprising a hammer (11) mounted so that it can pivot at the rear of the pistol, and a trigger (10) secured to an actuating arm (15) that acts on means (19) of arming the hammer (11) and retaining it in the armed position. The means for arming and retaining the hammer (11) comprise a link (19) directly connected to the hammer (11) by an articulation (20) and which is actuated via a lever (40) pivot-mounted in the frame (1). The lever has a top end actuated by the barrel as the latter moves into its forward position in order to cause the lever (40) to pivot, and a bottom end acting like a cam on the link (19) by pushing it backwards in order to rearm the hammer (11).

Abstract: An operating system for an individual firearm, such as a rifle, comprises a carriage (14) sliding axially in the compartment of the body of the firearm, an obturator (10) associable to the barrel (2), an elastic element (16), compressible between the carriage (14) and the obturator (10). In the configuration of firearm ready to fire with the bullet in the barrel, the obturator (10) has a free compression stroke (D) for the compression of the elastic element (16) and the barrel (2) has a free firing stroke (C) in relation to the abutment (32) of the operating compartment (8).

Abstract: The pistol comprises a frame (1) containing a barrel (4) slidably mounted. The pistol further comprises a firing mechanism comprising a hammer (11) mounted so that it can pivot at the rear of the pistol, and a trigger (10) secured to an actuating arm (15) that acts on means (19) of arming the hammer (11) and retaining it in the armed position. The means for arming and retaining the hammer (11) comprise a link (19) directly connected to the hammer (11) by an articulation (20) and which is actuated via a lever (40) pivot-mounted in the frame (1). The lever has a top end actuated by the barrel as the latter moves into its forward position in order to cause the lever (40) to pivot, and a bottom end acting like a cam on the link (19) by pushing it backwards in order to rearm the hammer (11).

Abstract: The invention relates to a firearm (10), in particular a single or multi-shot repeating rifle comprising a stock (11), a barrel (30) axially displaceable relative to the stock (11) and resting on or in a linear guide (20), a cartridge chamber to receive a cartridge being constituted in said barrel, further a breech (40) fitted with a breech cap (41) to seal the cartridge chamber and axially affixable in the barrel end (32) when the firearm (10) is closed, and further a locking unit (80) to lock the firearm into the closed position. The linear guide (20) comprises at least one guide rod (21), guide fork or the like linked or linkable to the barrel (30) and guided in sliding manner within the stock (11). This design leads to a compact and easily manufactured firearm with a slender and attractive appearance. The firearm (10) furthermore is made of fewer parts, resulting in simple disassembly and small shipping size.

Abstract: A recoil-operated, impulse averaging, air-cooled, magazine-fed, automatic weapon. An operating group of the weapon includes a chamber, a bolt, a barrel extension and one or more toggles. The recoil action of the weapon from firing a first round drives the toggles in a motion constrained by a cam way. The toggles then drive the chamber in a linear reciprocating motion ejecting a first round and over-riding the next round. An impulse averaging system controls the speed of the recoil.

Abstract: Firing device includes a firearm which includes a cartridge carrier in the loader in front of the entry of the barrel and supported against a supporting element of the casing which includes the firing mechanism and whereby the barrel slides in the casing into a position in which the barrel comes to a stop through the action of a return spring against the front part of the case of the cartridges and wherein each cartridge is provided with propulsion arrangement to project the case and the barrel forward.

Abstract: A firearm (10), in particular a repeating shotgun, comprises a stock (11), a barrel (30) which is supported in axially displaceable manner relative to said stock (11) at or in a linear guide (20), a cartridge seat (31) to receive a cartridge (P) being configured in said barrel (30), further a closing system (40) fitted with a closing head (41) to close the cartridge seat (31), said closing head (41) being axially affixable in place in the barrel end (32, 33) when the firearm (10) is being closed and being traversed centrally to the barrel axis (A) by a striker pin (18), and a locking system (80) to lock the firearm (10) in its closed position. The closing system (40) is substantially configured axially symmetrically and/or rotationally symmetrically to the barrel axis (A).

Abstract: A recoil-operated, impulse averaging, air-cooled, magazine-fed, automatic weapon. An operating group of the weapon includes a chamber, a bolt, a barrel extension and one or more toggles. The recoil action of the weapon from firing a first round drives the toggles in a motion constrained by a cam way. The toggles then drive the chamber in a linear reciprocating motion ejecting a first round and over-riding the next round. An impulse averaging system controls the speed of the recoil.

Abstract: Apparatus 10 comprises a receiver body 12 along with a trigger 14 for activating the firing mechanism and a lever 16 for opening the breech assembly to allow access to the chamber for receiving the shell/cartridge 56 at the rear of the barrel 18. The barrel 18 is secured to the breech 28 by an extension lug 58 having an internal transverse hole 61 therein which receives the extension lug pin 59 therein as the extension lug is inserted into the slot 60 on the top portion of the breech block 28 so that the breech can be opened and closed by lever 16. Also shown is the cartridge/shell 56 extractor 62 which comprises an extractor pin 68 along with an extractor spring 70. The barrel 18 comprises a front barrel support 64 and a rear barrel support 66 which each have a lower flange 65 thereon which slides to the front and rear in slot or track 67 in response to pressure from the barrel pin 72 and barrel spring 74 which occurs after the lever 16 is operated to free the barrel 18 from the breech block 28.

Abstract: Apparatus 10 discloses a receiver body 12 along with a trigger 14 for activating the firing mechanism and a lever 16 for opening the breech assembly to allow access to the chamber for receiving the shell/cartridge 56 at the rear of the barrel 18. FIG. 1 shows the breech block 28 and barrel 18 closed and FIG. 2 shows the breech block 28 and barrel 18 open. Also shown is the action bar 20 having a front portion for contacting the rear of the firing pin 22 and forcing the firing pin forward so as to contact the primer 55 of the shell/cartridge 56. The firing pin 22 has a firing pin spring 26 thereon which is mounted in a hole in the breech block 28. The action bar 20 is supported by upper and lower supports 30 near its front end along with upper and lower support pins 31 which also act as a rear spring stop near its mid-section having main spring 24 and front spring stop 25 thereon. Also shown on the action bar is internal, transverse slot 38 and notch 48 on its bottom surface.

Abstract: A firearm frame which is adapted to be disposed in operative relationship as a component part of a firearm, the firearm having disposed in operative relationships each with one or more of the others, a barrel, a receiver, and at least one firing mechanism; wherein the barrel and receiver form operative parts of a movable assembly and the at least one firing mechanism is disposed in a substantially stationary operative relationship therewith; the firearm frame including at least one elongated support structure discrete from the barrel and receiver, the elongated support structure being adapted to directly support the movable assembly in an operative movable relationship therewith; whereby at least one of the barrel and receiver is in direct contact with and movable on the elongated support structure; and, a firing mechanism support structure connected to the at least one elongated support structure, the firing mechanism support structure being adapted to have the firing mechanism connected thereto; the firearm

Abstract: A firearm apparatus includes a gun housing which includes a barrel support channel between a front gun housing portion and an intermediate gun housing portion. A reciprocating barrel is housed inside the gun housing and includes a piston-sleeve-contained barrel portion slidingly received in a piston sleeve which is housed in the front gun housing portion and in front of the barrel support channel. Proximal portions of a barrel piston head, the piston-sleeve-contained barrel portion, and the piston sleeve form a pressure space into which a portion of high pressure combustion gasses from a fired cartridge enter. The high pressure gasses propel the barrel forward until the barrel piston head reaches the end of the piston sleeve. Then, a recoil spring returns the barrel to its original position. As the barrel moves back and forth, a fresh cartridge is automatically loaded from a magazine into a barrel chamber portion, the cartridge is fired, and the spent cartridge is automatically discharged.

Abstract: A forwardly movable assembly for a firearm, the forwardly movable assembly adapted to be disposed in operative relationship relative to the other operative parts of a firearm, the firearm having in operative relationship each with one or more of the others: a barrel, a receiver, and at least one firing mechanism; the forwardly movable assembly comprising: the barrel and the receiver operatively connected with each other; a movable hand support structure to which at least one of the barrel and the receiver is connected, the barrel being movable therewith, the movable hand support structure being adapted to be gripped by an operator of the firearm; the forwardly movable assembly being adapted to be moved forward by an operator upon gripping the movable hand support structure and manually maneuvering the hand support structure forwardly; and, as the forwardly movable assembly is moved forwardly, the firing mechanism is completely disengaged therefrom and held substantially stationary relative thereto.

Abstract: Automatic and semi-automatic firearms of remarkably reduced mass yet capable of long-range accuracy because of unique recoil reduction are characterized by (A) a temporary combination of a barrel, an integral breech and a separable chamber that in operation of the firearm is moved by a compressed spring distally before and while a chambered cartridge is fired, (B) run-out of such temporary operative combination diminishes firearm recoil, (C) recoil of the temporary operative combination recompresses the spring and (D) the separable chamber is loaded with a round while spatially separated from the breech and barrel.

Abstract: A recoil control mechanism for a weapon which fires a projectile which is characterized by the generation of a forward counterforce to the rearward recoil simultaneously with absorption of rearward recoil force upon initiation of propoulsion of the projectile. The forward counterforce is generated by propelling a first mass forwardly upon firing the projectile and substantially simultaneously propelling a second mass rewardly for absorbing some of the recoil force. In one mechanism (10), the first mass may be the weapon's barrel (12) and the second mass its breach block (14). Expaning gases (36) from detonation of propellant in cartridge (24) enter a reaction volume (28) between the barrel (12) and breech block (14). These gases drive barrel (12) forwardly against force transmission spring (16) to impose a forward counterforce on the weapon's frame (18).

Abstract: A weapon having a barrel (3) supported in a cradle (2) for axial recoil movement, and having a breech block wedge (7) displaceable, transversely to the barrel axis (6) by a control unit (11) connected to the cradle and acting on a piston rod (8). The control unit (11) includes a spring-loaded shift rod (13) aligned with the piston rod (8), a spring-loaded control rod (15) aligned with a control cam (10) secured to the breech ring (4), and a detent pawl (17) that can be pivoted by a cam (16) from a blocking to a release position. The piston and shift rods (8, 13) are disposed such that during forward motion of the barrel (3), the breech block wedge (7) is already opened by axial displacement of the rods (8, 13) before the control cam (10) displaces the control rod (15).

Abstract: In order to provide a gun in which the recoil force attendant with actuation is reduced, a prototype model of a telescoping barrel gun has been designed. In this design, an inner barrel, which contains and directs the projectile, is made to slide forward within an outer barrel when the gun is actuated. The motion of the inner barrel is then stopped while the projectile moves unimpeded. The telescoping barrel design functions together with a design which requires a portion of the cartridge's propellant energy be used to produce a reduction in the force of the gun's recoil when fired. Upon firing, some of the propellant gases are channeled forward in the gun to an air space, which lies between the two concentric barrels. The forward motion of the inner barrel forces the gases in this air space from the gun through small holes located in the distal area of the outer barrel. The discharge of these gases is rearwardly directed in order to counteract the gun's recoil.

Abstract: A semi-automatic handgun is disclosed including a frame having a barrel housing mounted thereon. A barrel is movably mounted on the barrel housing and has a cartridge chamber at its rearward end for receiving a cartridge therein. The barrel is movable between a rearward position and a forward position with respect to the barrel housing and is normally in its rearward position. The barrel moves forwardly in a straight line from its rearward position upon firing of the cartridge in the chamber to counteract the rearward energy of discharge, thereby reducing recoil. The handgun may be fired in either a single action or double action manner. The firing hammer of the handgun is re-cocked, upon firing of the cartridge, by means of a movable piston having a firing pin positioned therein with the firing pin engaging the hammer to move the hammer to its re-cocked position.

Abstract: In order to provide a gun in which the recoil force attendant with actuation is reduced, a prototype model of a telescoping barrel gun has been designed. In this design, an inner barrel, which contains and directs the projectile, is made to slide forward within an outer barrel when the gun is actuated. The motion of the inner barrel is then stopped while the projectile moves unimpeded. The telescoping barrel design functions together with a design which requires a portion of the cartridge's propellant energy be used to produce a reduction in the force of the gun's recoil when fired. Upon firing, some of the propellant gases are channeled forward in the gun to an air space, which lies between the two concentric barrels. The forward motion of the inner barrel forces the gases in this air space from the gun through small holes located in the distal area of the outer barrel. The discharge of these gases is rearwardly directed in order to counteract the gun's recoil.

Abstract: An automatic projectile firing weapon and a related method for absorbing the recoil force of an automatic projectile firing weapon are disclosed. The weapon includes a barrel assembly that is slidably mounted in a receiver, biased by an operating spring, and engageable with a main sear. A gas operated bolt assembly is slidably mounted within the barrel assembly and is driven by a bolt spring. A trigger is provided to release the main sear and allow the operating spring to move the barrel assembly forwardly in the receiver. There is further provided a buffer connected between the receiver and the barrel assembly to dampen the velocity of the barrel assembly to ensure the barrel assembly is moving at a predetermined maximum velocity when a round is fired at a predetermined firing position. The recoil energy from the fired round is absorbed mainly by the forward motion of the barrel assembly and in part by the operating spring and buffer.

Abstract: This invention comprises a gas operated forward actuating pistol with a locking bolt to hold the barrel assembly closed until the bullet has passed the port in the barrel. At the passing of the bullet, the gas pressure first moves the lock bolt down freeing the barrel assembly to be pressured forward by the gas pressure. As the barrel assembly moves forward, the extractor/ejector holds the empty cartridge case to be ejected as the barrel clears end of the case. When the barrel reaches the forward stop, a new cartridge rises into position to be chambered as the barrel returns to a lock position with the extractor/ejector spring loaded to a vertical position to ensure chambering.

Abstract: A firearm with an automatic cycle, includes a frame (1), a barrel (2) mounted on this frame (1) and at least one breech bolt (3) mounted in a movable manner in relation to the frame, whereby the barrel (2) and the breech bolt (3) can be separated so as to make it possible to feed ammunition. The barrel (2) is also movable in relation to the frame (1), both forward and backward relative to a rest position, whereby the barrel (2) and the breech bolt (3) are mounted such that the barrel (2) can recoil together with the breech bolt (3) relative the rest position and can continue, when returning forward, can continue beyond the rest position and then return to the rest position, whereby the advancing of the barrel (2) beyond or forward of the rest position takes place at least partly after the separation of the barrel (2) and the breech bolt (3).

Abstract: A toy gun includes two discs secured in a gun barrel. A roller is rotatably supported between the discs and has three helical grooves. Three tubes are slidably extended through one of the discs and are engaged with the helical grooves of the roller such that the tubes are moved in reciprocating action when the roller is rotated. Three light bulbs are disposed in the tubes, and the tubes are made of transparent materials having different colors such that different colors are generated through the tubes when the light bulbs are energized.

Abstract: A gun comprising a frame, a barrel, and a slide. The barrel and the slide being slidably mounted to one another and to the frame for movement between a retracted position and an extended position; the barrel having a bore and having a gas port communicating with the bore for allowing gas to pass from the bore when the gun is fired; the gun having a chamber communicating with the gas port when the barrel and slide are in the retracted position and for receiving gas from the gas port when the gun is fired to cause the barrel and the slide to move from the retracted position to the extended position in a direction opposite the recoil of the gun when the gun is fired.

Abstract: The present invention comprises a self-actuating blow forward firearm having a fixed breech block located to the rear of the firearm. A cartridge feeder provides a supply of cartridges to the loading area so that the firearm can be used as an automatic or semi-automatic weapon. The firearm also contains an outer receiver tube and a movable inner gun barrel which is biased toward the rear of the firearm by a spring disposed in a chamber between the receiver tube and the inner movable barrel. When the trigger mechanism is activated, the action of the bias spring causes the inner movable barrel to move backward toward the breech block striping a cartridge from the feeding device and forcing the end of the cartridge against the firing pin on the breech block. The bullet is fired down the bore of the inner movable barrel. The movement of the bullet along the bore of the inner movable barrel drags the barrel forward against the action of the bias spring.

Abstract: An electrically-fired cartridgeless ammunition projectile firearm system, which can operate with or without batteries, and which system has only one moving part is provided. The firearm system uses magnets to generate the charges which are required to detonate the projectiles, uses opposing magnets to eliminate the need for the inclusion of recoil springs after firing, and also uses magnets to dampen the recoil of the firearm. Additionally, it provides a firearm system, which, when loaded with a magazine and ready to fire, operates with no external openings with the exception of the muzzle and cooling slots surrounding the firing chamber, so that it can operate under almost any physical or climatic conditions. It is also designed to utilize a forward motion of its barrel on firing, which reduces the amount of recoil felt by the user. The several factors which reduce recoil, improves accuracy.

Abstract: An automatic gas-operated forward recoiling combat shotgun has a reciprocally movable barrel which includes a bore and a revolving magazine which defines a circumaxially spaced series of firing chambers. In firing position one of the firing chambers is coaxially aligned with and forms a rearward extension of the bore. A cam acutated indexing mechanism sequentially positions each of the firing chambers in firing position in response to reciprocal movement of the barrel. A manually reciprocally movable foregrip functions to cock the shotgun firing mechanism and also cooperates with the trigger mechanism to release the magazine when the forearm is operated while the trigger held in a firing position. A cocking trigger enables silent cocking or uncocking of the firing mechanism. The casing of each shell forms a seal between an associated firing chamber and the barrel when the weapon is fired.

Abstract: An automatic ammunition transfer device is disclosed. A reciprocating char block includes a stripper tab for moving ammunition rounds from the magazine into a round carrier mechanism. The round carrier mechanism includes spring load fingers for holding the round. The mechanism, with round therein, is moved from a stagging position to a chambering position for insertion of the round into the firing chamber by a four bar linkage arrangement. The four bar linkage is pivoted between the stagging and chambering positions in timed relation with the chamber block movement, as determined by a cam path located on the chamber block.

Abstract: A handgun which combines the reliability of a revolver and the convenience of an automatic wherein said handgun is provided with a barrel which moves forwardly in response to the firing of a cartridge. Said forward movement and the reverse thereof being responsible for the indexing of a cylinder-like cartridge carrier by means of indexing levers operatively connected between said barrel and said cartridge carrier and the cocking of the lockwork of the handgun.

Abstract: An automatic weapon with a receiver, a breech block fixedly mounted in the receiver, a barrel reciprocable within the receiver, a spring biasing the barrel, and a gas cylinder chamber externally of the barrel and in communication therewith, whereby upon firing of the weapon, the gases discharged from a cartridge ejected from the barrel, pass into the gas cylinder chamber means to thereby tension the spring.

Abstract: A handgun of the drop barrel type has an over-length firing pin coupled with a "pile-driving" barrel action that permits the firing of rifle load cartridges. A micro-precision timing sequence of the action causes the rearwardly propelled cartridge disposed in the floating drop barrel chamber to strike the fixed firing pin while the barrel is still in its rearwardly moving direction. In the preferred form of the invention a spring driven actuator sleeve surrounding the barrel interiorly of a receiver tube propels the barrel rearwardly such that the cartridge is ignited and the bullet discharges from the barrel prior to the seating of the barrel against a breech plate that is integral with the gun frame. Gases escaping and expanding from the cartridge are captured by the barrel and actuator sleeve and cooperate with the inertia created by the falling barrel to lock and seal the barrel chamber against the breech plate.