Abstract: A bolt action rifle with safety latching mechanism has an upper receiver including a movable bolt assembly, a lower receiver having a trigger assembly and releasably attached to the upper receiver, the bolt assembly movable between a cocked position and an uncooked position, and the upper receiver and the lower receiver including a latching mechanism operable to prevent the lower receiver from being detached from the upper receiver while the bolt assembly is in the cocked position.

Abstract: A bolt handle assembly for a firearm is disclosed. In one embodiment, the bolt handle assembly includes a bolt having an internal channel and a laterally extending slot, a bolt handle including a mounting tang insertable through the slot and having a locking aperture positioned in the internal channel, a firing pin striker slidably disposed in the internal channel, and a locking member mounted on the firing pin striker. The locking member is insertable through the locking aperture of the bolt handle and is configured for engaging the mounting tang of the bolt to removably secure the bolt handle to the bolt. The locking member is rotatable between locked and unlocked positions to secure and release the bolt handle from the bolt. A method for mounting the bolt handle to the bolt is also disclosed. In one embodiment, the firearm is a bolt-action rifle.

Abstract: An pressure reducing component for a firearm that includes one or more vent apertures formed through a side wall or the forward assist cover of an upper receiver. The vent aperture(s) may be completely open to allow gases to be vented from within the upper receiver or may be adjusted to allow a desired amount of gas to be vented from within the upper receiver.

Abstract: A firearm 10 having a selectively movable slide portion 12 which includes at least one serrated radius or shoulder edge 14, 16 and which allows the firearm 10 to be selectively cycled by engaging the at least one serrated edge 14, 16 with a surface, such as table edge 32, thereby allowing for selective and relative movement between the frame 7 and the slide portion 12.

Abstract: The present invention is an ambidextrous slide stop for use with a handgun consisting of an assembly of a right side slide stop bracket and a left side slide stop bracket, so that a right handed shooter can still activate on the left side with the right thumb. Alternatively, right side slide stop allows a left handed shooter to use the left thumb to pivot the assembly downward to release the slide. A pivot pin of the right bracket engages with a pivot shaft of the left side bracket.

Abstract: A rifle in a bullpup configuration is provided, comprising a receiver having a trigger assembly and a magazine well, and a barrel having a barrel extension attached to the receiver. A gas assist system is attached to the barrel, including a gas housing surrounding the barrel and having an annular expansion chamber, and an annular gas piston slidably disposed within the gas housing. A thrust block is in contact with the gas piston, wherein the thrust block is slidably disposed along one or more action guide members. A rigid slide member extends from the thrust block and behind the trigger assembly. A bolt carrier and bolt are attached to the second end of the slide member and slidably disposed along one or more bolt guide members.

Abstract: A firearm (1) comprising a stock (2) and a slide (3) and a bolt (50) suitable to reciprocally lock them. Firearm wherein the slide (3) comprises a barrel (31), a spring and a spring-holder (35) suitable to act on the bolt (50). The bolt (50) comprises a spring-holder seat (500) which acts in conjunction with an engagement end (350) of the spring-holder (35). The spring-holder seat (500) comprises a support surface (501), a translation surface (502) which permits the translation of the bolt (50) acting in conjunction with said engagement end (350).

Abstract: A straight pull bolt action system for use with a firearm includes a bolt, an action bar, a locking pin and a locking lug. The locking lug front end is pivotally moveable between an up position and a down position, the bolt and action bar are longitudinally moveable between forward and rearward positions. The bolt has a lower locking surface that locks with the locking lug front end when the bolt is in the forward position and the locking lug front end is in the up position. The locking pin has one portion slidably disposed in an opening in the bolt and another portion slidably disposed in an L-shaped opening in the action bar.

Abstract: A bolt control device for causing the bolt of a firearm to be held in a retained position after each round is fired, the bolt control device capable of being manipulated by the user to also release and return the bolt to a firing position so that the firearm may be used to fire an additional round.

Abstract: A cam pin system, includes a cam pin comprising a first cylindrical portion having a first length and a first diameter and a second cylindrical portion concentric with the first cylindrical portion and having a second diameter larger than the first diameter, the second cylindrical portion comprising a through-hole to accommodate the passage of a firing pin. The system includes an end plate detachably connected to the first cylindrical portion of the cam pin, a cylindrical bushing encircling the first cylindrical portion and having an outside diameter approximately equal to the second diameter and a bushing length approximately equal to the first length, and lubricant between the cylindrical bushing and the first cylindrical portion. The cam pin system is configured so that the cylindrical bushing can rotate freely about the first cylindrical portion.

Abstract: A charging handle assembly for an assault rifle includes a bolt engagement arm having an axially elongated shaft extending between a forward end and a rear end, a manual operator adapted to be manipulated by a user for effecting sliding movement of the bolt engagement arm, an operator extension elongated in the axial direction, connecting the manual operator with the rear end of bolt engagement arm and holding the manual operator forwardly thereof and laterally separated from the bolt engagement arm, an engagement latch mounted to the manual operator so as to be movable between an engagement position and an disengagement position, a biasing element extending between the manual operator and the engagement latch and biasing the engagement latch into the engagement position. A latch retainer can be attached to a mounting rail for receiving the engagement latch.

Abstract: Disclosed herein is a modified upper receiver assembly and method of assembly, which in one form is operatively configured to be fitted to a conventional lower receiver of a rifle so the user can use their normal lower receiver having a pistol grip, trigger assembly and butt stock. The upper receiver is configured to provide a blowback bolt assembly of larger mass than would be possible with similar density materials of a bolt fitted within an upper receiver conventionally made for said lower receiver.

Abstract: A bolt assembly for a firearm, wherein the bolt assembly is intended to move inside an inner cavity of a receiver of the firearm and comprises a body, a removable bolt head, at least one protruding element that tends to protrude elastically from the body, so that when allowed to protrude elastically unhindered, the bolt assembly cannot be inserted inside the inner cavity of the receiver. The connection of the bolt head to the body causes the protruding element to elastically contract, enough to allow the bolt assembly to be inserted inside the inner cavity of the receiver. Thus, a single elastic protruding element enables the user to be warned if trying to assemble the body without the bolt head into the receiver.

Abstract: An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearms gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pins annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end and an extractor recess. The extractor recess is constructed to accommodate an enlarged extractor claw while not undercutting the bolt lugs adjacent thereto. The extractor engages approximately 57% more of a seated ammunition cartridges rim as compared to some prior art AR15/M16 type extractors used with automatic firearms chambered in 6.8 SPC. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

Abstract: A rifle having a receiver formed of upper and lower receiver portions attached to one another has one or more elastic bodies positioned between facing surfaces of the upper and lower receiver portions. The elastic bodies reduce play or lost motion between the upper and lower receiver portions for improved accuracy.

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: Disclosed is a firearm bolt that may optionally incorporate one or more ejectors that are located closer to the extractor. The disclosed firearm bolt may also optionally position the ejector(s) outside of a central portion of a cartridge that experience high compression forces when the cartridge is fired.

Abstract: A firearm receiver formed out of an extruded body. The receiver can be a lower receiver adapted for use in a modular rifle having both an upper receiver securable to a barrel and a lower receiver housing a trigger assembly. The receiver includes a bore extending completely through the receiver wherein the bore is formed during the extrusion process. Also disclosed is a method of manufacturing a firearm receiver that includes extruding the receiver with a bore extending through the extrusion. The process may be advantageously employed to form the lower receiver of a modular rifle wherein the bore formed during the extrusion process defines the magazine well of the rifle.

Abstract: An automatic machine gun capable of being quickly reconfigured to fire different calibers of ammunition. The elements necessary to reconfigure the weapon are all stored and contained within the stock of the weapon. The reconfiguration process does not require any external tools.

Abstract: The present invention provides for a firearm having a receiver defining a bore with the receiver extending along a longitudinal axis. The receiver defines an ejection port transverse to the longitudinal axis with the bore defining an inner surface. The firearm further includes a bolt carrier disposed in the bore and moveable relative to the receiver along the longitudinal axis between a firing position and a rearward position. The firearm also includes a shield longitudinally affixed to the bolt carrier and movable with the bolt carrier as a unit between the firing and rearward positions along the longitudinal axis with the shield blocking the ejection port when in the firing position and the shield sliding along the inner surface away from the ejection port when moving to the rearward position in conjunction with the bolt carrier.

Abstract: A bolt assembly for a firearm such as an auto-loading or pump action shotgun includes a bolt body, bolt carrier and a bolt head. The bolt head is received within the bolt body and is rotatable within the bolt body to lock the bolt assembly into battery prior to firing the weapon, but does not extend from the bolt body during such rotation. The bolt carrier translates axially relative to the bolt body so as to cause rotation of the bolt head. The extractor for the firearm can be pivotally attached to the bolt body, while the ejector further can be integrated into the bolt assembly for engaging and ejecting a shell or cartridge after firing.

Abstract: In accordance with various exemplary embodiments, a firearm actuation system is provided. The firearm actuation system, comprising a housing, a guide, a contoured actuation handle, and a bolt. The system provides an actuation mechanism for an AR-15 which is engagable by a shooter where the AR-15 is in a shouldered firing position. The contoured actuation handle may be retained in the retaining slot to provide an action-open-position. The housing may also comprise a mounting rail with a plurality of grooves, where each groove may be configured with a unique indicator.

Abstract: Improvements and modifications in the rifle and submachine gun platforms to improve accuracy, improve user functionality, simplify and improve the machining and manufacturing and assembly process are presented. Specifically, the disclosure describes a hinge pin connection system for an access door, a retention mechanism that eliminates freedom of movement for hand guards, cuts in a barrel extension that reduce or eliminate barrel rotation, a barrel retention mechanism that allows for securing of a barrel from the sides of a firearm, a dove tail connection between an up rod and bolt carrier, and an aperture located on a lower receiver for mounting slings and other accessories.

Abstract: The present invention relates to a gun (1) with a barrel (4) which proximally delimits a firing chamber (6), and a slide (8) translatable between a forward configuration in which it closes the firing chamber (6), and a rearward configuration in which it is distanced from the barrel (4) to open said chamber (6). The orientation of the firing chamber (6) in the forward configuration and in the rearward configuration is substantially parallel to the longitudinal axis (X). The gun (1) further comprises a locking device (10), which in the forward configuration acts so as to join the barrel (4) and the slide (8) and in the rearward configuration releases the slide (8) to enable its backward movement. The locking device (10) comprises at least one locking projection (12, 14) which, when the slide (8) and the barrel (4) are reciprocally released, guides the slide (8) in translation.

Abstract: An accessory which becomes an integral part of a semi-automatic firearm whereby the firearm is converted from one with a detachable magazine into one with a fixed magazine. The device is comprised of an upper tension bar and a magazine catch bar whereby the upper tension bar holds the magazine firmly within the magazine well receiver when the upper tension bar is contacting the upper receiver. When the upper receiver and lower receiver of the firearm are in an open position, the upper tension bar freely moves inward toward the firearm, allowing the magazine catch bar to remove from the magazine well receiver. A user may then remove the magazine from the magazine well receiver and replace it with a new magazine. The user must reattach the upper receiver to the lower receiver before utilizing the firearm.

Abstract: A firearm with slide takedown mechanism and method for use is disclosed. In one embodiment, the firearm includes a frame, barrel, trigger and a reciprocating slide. A takedown lever is pivotably mounted to the firearm and engageable with the slide. In a first blocking position, the takedown lever engages and blocks the rearward path of the slide which is not movable beyond a first position. In a second unblocking position, the takedown lever is pivoted laterally outwards from the frame and disengages the slide. The rearward path of the slide is no longer blocked which may be moved to a second rearward removal position enabling a user to remove the slide and field strip the firearm. In one embodiment, the takedown lever is disposed underneath the frame. The firearm may be a semi-automatic pistol in some embodiments.

Abstract: The disclosed apparatus is a scissor-style action to be mounted to a firearm. In one embodiment the firearm is a semi-automatic firearm prior to removal of the stock action and attachment of the disclosed action. In one particular embodiment, the firearm is a rifle sold by the Ruger® company under the model name 10/22.

Abstract: A bolt assembly comprises: a bolt front half piece having an extractor slot through which the spent casing is ejected; a bolt rear half piece; an elastic body; and a bolt interlock received in the bolt rear half piece and movable longitudinally with respect to the bolt rear half piece. The elastic body is disposed between the bolt interlock and the bolt rear half piece when the bolt front half piece and the bolt rear half piece are mated together. When the bolt interlock is in a first position, the bolt front half piece is interlocked axially with respect to the bolt rear half piece with the extractor slot pointing in a first direction. When the bolt interlock is in a second position, the bolt front half piece is rotatable axially with respect to the bolt rear half piece so that the extractor slot can point in a second direction.

Abstract: A magazine well for a firearm having an angled spine receiving portion. A charging handle for a firearm having latch that extends below a bottom surface of a crossbar. A bolt carrier for a firearm having a pair of vent holes disposed in the indented portion and at least one additional vent hole on indented portion adjacent to the pair of vent holes. A bolt catch for a firearm having a receiving portion curved to match the contours of a human thumb. A scope assembly for a firearm having markers on a scope and amount that correspond to the same radial positions. A bolt for a firearm having a plurality of ribs disposed on a main body and extending from a front end toward a tail portion of the bolt.

Abstract: A robust and convenient caliber conversion kit is described, for example, for the higher-caliber GLOCK® semi-automatic pistol. The caliber conversion kit has an internalized spent round extractor for more reliability. In addition, the firing pin safety relies on a set of two-dimensional surfaces, rather than on a one-dimensional line or edge, for cooperation (interaction and support) with the firing pin and with a recess in the firing pin housing that receives the safety, resulting in more security. Also, the spent round ejector is snugly fastened around an outwardly-extending abutment of steel on the barrel, the abutment being within a recess also snugly fitting the perimeter of the front end of the ejector, resulting in a quieter ejector mechanism.

Abstract: Disclosed is a bolt assembly that may include several lands that extend along the forward end of the bolt assembly that occupy only about 1 percent to about 12 percent of the surface area of the forward end. Also disclosed is a bolt carrier that defines a cam path that includes an increased unlock dwell time of approximately twice the unlock dwell time provided by a cam path shaped like a standard M-16 cam path. Also disclosed is a bolt carrier that includes a protrusion at a forward end of the bolt carrier with a bore that extends through the protrusion and the bolt carrier at a substantially constant bore diameter, where the protrusion is sized to be received in the barrel extension extends approximately one hundred thousandths of an inch from the end of the bolt carrier.

Abstract: A monolithic upper receiver/hand guard is provided for use with a firearm. The monolithic upper receiver/hand guard can include an upper receiver section, a hand guard section, and an interrupted optics rail extending along the top of the upper receiver section and the hand guard section. Cable routing features can be defined in the hand guard section and/or the upper receiver section for helping to control wires and cables extending from or between peripheral devices and accessories, which can be mounted on the monolithic upper receiver/hand guard. The cable routing features can include one or more crossover cable guides disposed in respective channels in the interrupted optics rail. The crossover cable guide can include one or more grooves for receiving a portion of a cable passing from one side of the monolithic upper receiver/hand guard to the other for connecting two peripheral devices, for example.

Abstract: A firearm slide stop having a forward facing thumb tab mounted within a semi-automatic handgun. The firearm slide stop having a forward facing thumb tab functions to give a visual indication when the firearm has expended all loaded ammunition. Firearm slide stop having a forward facing thumb tab also functions and facilitates faster re-loading by removing the step of pulling back the slide of firearm to advance the first round of a new magazine by replacing the magazine and activating a push-button or lever release to load the first cartridge into the chamber. The firearm slide stop having a forward facing thumb tab functions while accommodating a user utilizing variable firearm gripping techniques. Specifically, the user using current recoil control gripping techniques, may grasp firearm without interfering with the functionality of the slide stop and specifically the thumb tab.

Abstract: A bolt (20, 20?) for locking the stock (11) to a receiver (12) of a firearm having mobile masses (13), comprising a tubular element (21) which can be closed at the ends respectively by means of a bolt-body cap (22) which can be screwed to the receiver (12) and by means of a bolt -stock cap (23) on which the stock (11) can be tightened, the tubular element housing in its interior a mechanism (40, 40?) for damping the withdrawal speed of the mobile masses (13) of the firearm, situated on their withdrawal trajectory and equipped with a free end not connected to the mobile masses (13) and destined for coming into contact with the latter during their withdrawal movement following the firing of the firearm for damping the stress.

Abstract: A rifle having a receiver formed of upper and lower receiver portions attached to one another has one or more elastic bodies positioned between facing surfaces of the upper and lower receiver portions. The elastic bodies reduce play or lost motion between the upper and lower receiver portions for improved accuracy.

Abstract: A tactical firearm has an upper receiver defining a handguard mounting surface oriented in substantially normal relation with the bore of a rifle barrel and defining handguard mounting flanges that project radially from the upper receiver. A handguard is provided with like radiating handguard mounting flanges and is releasably secured to the upper receiver by fasteners. A barrel extends through the handguard and is secured by a barrel retainer to the upper receiver in a manner achieving clearance and thermal isolation of the handguard from the barrel and barrel retainer.

Abstract: A tactical firearm having upper and lower receivers that are releasably connected. A cartridge gas energized bolt carrier assembly is moveable within the upper receiver and is provided with anti-tilt guidance with respect to a spring energized buffer mechanism, that is provided within a butt-stock of the lower receiver. The bolt carrier assembly moves a cartridge from a magazine and feeds the cartridge into the cartridge chamber of the barrel and returns the bolt carrier assembly to its closed and locked condition upon dissipation of the cartridge gas energizing force. The bolt carrier assembly is efficiently guided to prevent its misalignment during its rearward and forward auto-loading movement.

Abstract: A modular rail system for an upper receiver of a firearm is provided, the modular rail system having: a bottom portion configured to be removably secured to the upper receiver, wherein the bottom portion has an integrally formed bottom rail and a forward portion located forward of a top rail of the upper receiver; an upper rail extension configured to be removably secured to the forward portion of the bottom portion; and a release mechanism for releasably securing the upper portion to the forward portion of the bottom portion.

Abstract: An apparatus is disclosed for a firearm conversion kit. The apparatus includes left and right hand portions configured to form furniture of a firearm having a trigger, a remote trigger coupled with a platform, the platform extending into a slot in at least one of the left and right hand portions, and a single linkage rod coupling the remote trigger to a trigger engagement device configured to actuate the trigger when the remote trigger is actuated.

Abstract: A hand guard attachment system for releasably attaching a hand guard to a firearm is disclosed herein. The system includes the hand guard having a proximal end configured to engage a forward end of a receiver of the firearm. The system further includes a tensioning assembly configured to interface between the hand guard and the forward end of the firearm. The tensioning assembly is further configured to selectively maintain an engaged position between the hand guard and the firearm such that the hand guard is releasably attached to the firearm without interfering with, or requiring removal of, the barrel and/or barrel nut connected to the receiver.

Abstract: A powered rail system is provided for a weapon that includes a barrel. The powered rail system includes a base having a longitudinal opening. The base is configured to be mounted to the weapon such that the barrel is received within the longitudinal opening and the base extends around at least a segment of a length of the barrel. A rail extends from the base. An electrical component is mounted to the rail. An electrical power source is held by the base. The electrical power source is electrically connected to the electrical component for supplying the electrical component with electrical power.

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: Disclosed is a bolt assembly that may include several lands that extend along the forward end of the bolt assembly that occupy only about 1 percent to about 12 percent of the surface area of the forward end. Also disclosed is a bolt carrier that defines a cam path that includes an increased unlock dwell time of approximately twice the unlock dwell time provided by a cam path shaped like a standard M-16 cam path. Also disclosed is a bolt carrier that includes a protrusion at a forward end of the bolt carrier with a bore that extends through the protrusion and the bolt carrier at a substantially constant bore diameter, where the protrusion is sized to be received in the barrel extension extends approximately one hundred thousandths of an inch from the end of the bolt carrier.

Abstract: The present invention provides for a firearm having a receiver defining a bore with the receiver extending along a longitudinal axis. The receiver defines an ejection port transverse to the longitudinal axis with the bore defining an inner surface. The firearm further includes a bolt carrier disposed in the bore and moveable relative to the receiver along the longitudinal axis between a firing position and a rearward position. The firearm also includes a shield longitudinally affixed to the bolt carrier and movable with the bolt carrier as a unit between the firing and rearward positions along the longitudinal axis with the shield blocking the ejection port when in the firing position and the shield sliding along the inner surface away from the ejection port when moving to the rearward position in conjunction with the bolt carrier.

Abstract: A bolt handle assembly for a firearm is disclosed. In one embodiment, the bolt handle assembly includes a bolt having an internal channel and a laterally extending slot, a bolt handle including a mounting tang insertable through the slot and having a locking aperture positioned in the internal channel, a firing pin striker slidably disposed in the internal channel, and a locking member mounted on the firing pin striker. The locking member is insertable through the locking aperture of the bolt handle and is configured for engaging the mounting tang of the bolt to removably secure the bolt handle to the bolt. The locking member is rotatable between locked and unlocked positions to secure and release the bolt handle from the bolt. A method for mounting the bolt handle to the bolt is also disclosed. In one embodiment, the firearm is a bolt-action rifle.

Abstract: A receiver for a firearm is provided with anchoring structures for mounting an accessory part having complimentary anchoring structures. At least one anchoring structure on the receiver comprises a through hole and a complimentary through hole on the accessory part such that when it is mounted on the receiver the through holes are aligned such that a fastening pin can be inserted. At least one anchoring structure comprises a portion of the lower edge of the receiver that engages a complimentary anchoring structure on the accessory part. At least one anchoring structure comprises a first projection and an adjacent first indentation at the upper, rear portion of the receiver with said first indentation being further away from the through hole than said first projection. A complimentary anchoring structure on the accessory part attaches in the manner of a snap mechanism.

Abstract: The disclosed apparatus and method facilitates modification of a firearm, such as an automatic, semi-automatic, bolt action, or other firearm to be modified to a scissor-style bolt action firearm. In one embodiment the firearm is a semi-automatic firearm prior to modification. In one particular embodiment, the firearm is a rifle sold by the Ruger company under the model name 10/22.

Abstract: Firearm comprising a receiver (2); a barrel (6) mounted with one end on the receiver (2); a breech (8) equipped with a loading lever (9) mounted, in a way so that it can slide, in the receiver (2); at least one return spring (15) to return the breech (8) to its closed position, characterised in that the return spring (15) is a tension spring of the ‘constant-force’ type that is mounted between the breech (8) and a fixed support (12) with respect to the receiver and the barrel.

Abstract: A firearm having reduced recoil including a front slide connected to a rear slide by way of a slide link. Firing the firearm causes the rear slide to recoil and transfer energy, by means of the slide link, to the front slide. The front slide moving in the direction opposite the rear slide thereby reducing the recoil of the firearm. After reaching full recoil, the front and rear slides return to their resting positions.

Abstract: The invention pertains to a bolt for a repeating firearm having a cylindrical bolt body and a bolt shaft that is detachably fastened on the bolt body. The bolt shaft is screwed to the bolt body by a fastening screw that protrudes into a sleeve-shaped rear section of the bolt body from the inner side of the bolt body through a radial through-opening and engages into a threaded bore of the bolt shaft.