Abstract: A combination receiver tube and adjustable stock for a firearm having a receiver. The receiver tube extends rearwardly from the receiver and includes a series of recessed locations formed along a length extending surface thereof, each of the recesses further including an ascending surface extending at an acute angle from the recessed location to an outer surface of the tube. The stock has a forward opening communicating with an open interior so that the stock is slidably mounted over the receiver tube to support axial movement of the stock relative to the tube. The stock includes a lug which is biased for seating within a first selected one of the recessed locations and, upon counter-biasing the lug to unseat from the recessed location, permitting the stock to be rearwardly extended from the receiver tube across consecutive recessed locations.

Abstract: Provided is a handguard attachment mechanism for use with a firearm using a standard AR-pattern barrel nut having a substantially cylindrical portion with an axial length and an enlarged diameter radial flange at a forward end. The handguard includes a substantially tubular handguard with proximal and distal ends. The proximal end includes a longitudinal slot extending from the proximal end toward, but not to, the distal end. A pair of clamping lugs, one positioned on each side of the slot adjacent the proximal end, have means for adjustably drawing the clamping lugs together to narrow at least a portion of the longitudinal slot. A circumferentially incomplete barrel nut bushing is configured to fit on the barrel nut.

Abstract: Knife mounts configured to selectively secure to a firearm, the knife mount including a body secured between a muzzle and a pistol grip of the firearm, a slot defined in the body and complimentarily configured with the knife to receive the knife, a locking mechanism moveably mounted to the body proximate the slot, the locking mechanism configured to selectively secure the knife within the slot by engaging the handle of the knife, wherein the knife mount rigidly secures the knife in an orientation where the handle of the knife defines a foregrip of the firearm for a user to grip and manipulate the firearm and allows the user to rapidly remove the knife from the body.

Abstract: A panel attachable to a firearm rail including an elongated body with a top side, an opposed bottom side, a front end, and a rear end. The front end and the rear end each includes at least one aperture extending through the top side to the opposed bottom side of the elongated body. The panel also includes a gripped surface on the top side of the elongated body and a slot extending through the top side to the opposed bottom side. The slot is configured to receive a firearm accessory.

Abstract: Implementations of a handguard system for firearms is provided. The handguard system is configured for use with a rifle (e.g., an AK-type rifle) and to support rail mounted firearm accessories. In some implementations, the handguard system comprises a rear sight block configured to fit about the barrel of a rifle and a handguard that can be removably secured to the rear sight block without making contact with the barrel (i.e. the handguard system is free-floating). In other implementations, the handguard system comprises a rear sight block and a handguard that can be removably secured together and thereby form a clamp that secures the handguard system to the barrel of a rifle. The handguard may be configured so that modular sections of MIL-STD-1913 mounting rail can be attached to various locations on the handguard as needed to provide a mounting structure for MIL-STD-1913 rail mounted firearm accessories.

Abstract: A firearm accessory connecting device to be mounted on a rail interface system has two locking mechanism and alignment relief lugs by which the device can be aligned and secured onto either a KeyMod rail interface or an M-LOK rail interface. The two locking mechanisms situated at a first front-end and a second rear-end of the connecting device and defined by a screw hole whereby a screw will engage the top surface of the connecting device and extend through the screw hole to the interior surface of the rail interface wherein a nut will be used to secure the screw in position and hence the mount onto the rail. The alignment lugs located at specific distances along the bottom surface of the connecting device will be slidably attached and aligned onto the rail interface.

Abstract: An adjustable stock system for a firearm includes a buttstock configured to be slidably attached to the firearm for moving relative to the firearm between a collapsed position and at least one extended position, wherein the buttstock includes a plurality of buttstock grooves defined therein. The system also includes a lever having at least one lever tooth configured to mate with the plurality of buttstock grooves in a latched position. The lever is configured to mount to the firearm and to be moveable relative to the buttstock between the latched position where the buttstock cannot slide relative to the firearm, and an unlatched position where the buttstock is free to slide relative to the firearm, wherein the lever is biased to the latched position. The system also includes an actuator configured to move the lever between the latched position and the unlatched position.

Abstract: An improved handguard for AR type rifles is shown. The handguard system uses an offset cam with a dual tapered side surface that engages a tapered circumferential groove on the barrel nut. Tightening the cam in place forces the receiver end of the handguard to clamp simultaneously against the barrel nut and against the front edge of the upper receiver of the rifle.

Abstract: The present disclosure is directed to a firearm capable of holding more than one magazines. In a particular embodiment, the firearm can include an operational magazine well adapted to receive an operational magazine and a secondary magazine well adapted to receive a secondary magazine, wherein the secondary magazine well is nonoperational.

Abstract: An upper receiver for a weapon, the upper receiver having a plurality channels each being oriented in a first direction and wherein each of the plurality of channels intersect an elongated channel extending in a second direction; a modular rail having a pair of securement features configured to be slidably received within a pair of the plurality of channels such that modular rail can slide in the pair of the plurality of channels in the first direction until the pair of features can slide within the elongated channel in the second direction.

Abstract: A sear mechanism for a firearm includes a trigger element having one or more contact surfaces on which one or more movable or pivotable components of the sear mechanism selectively contacts or slides. In some embodiments, the trigger element is made by producing an intermediate workpiece of the trigger element by a manufacturing process, and electric discharge machining the intermediate workpiece of the trigger element to provide the contact surfaces.

Abstract: An upper receiver assembly includes a barrel, a suppressor body operable to couple to a muzzle end of the barrel, and a first sleeve disposable about the barrel and the suppressor body, wherein the barrel includes one or more longitudinally oriented ribs extending radially from a barrel body having a bore formed therein, and a second sleeve surrounding the first sleeve, the second sleeve comprising a fibrous thermally insulating material.

Abstract: A free-floating rifle rail and barrel locking system that provides a barrel assembly and rail assembly, which is detachable from the main body of a rifle without tools. This is advantageous for quick field breakdown and/or rifle modification. The user has the option to disassemble the rifle for easy transport, to change barrel length, to change barrel caliber or change rail configurations. The rails are free-floating, meaning the rails do not come in contact with the barrel and thus do not impact the precision of the rifle.

Abstract: A handguard securement system and related method are provided. The system can include a barrel nut that secures a barrel to a receiver and forces a handguard against the receiver. The barrel nut can include one or more annular grooves. When the handguard is initially installed loosely adjacent the receiver, over the barrel nut, the grooves are misaligned with corresponding handguard fastener holes, such that portions of the barrel nut obstruct a portion of the holes. When the fasteners are advanced in the holes, and into further registration with the corresponding grooves, this results in a rearward force exerted by the fasteners on the perimeters of the holes to thereby drive with that force the handguard into forced engagement with the receiver. Any gap between the handguard and the receiver can subsequently be eliminated, with the handguard forcibly pushed against the receiver with the force generated by the fasteners.

Abstract: Implementations of a firearm chassis system are provided. In some implementations, the firearm chassis system may be used to convert a firearm between: a bullpup configuration in which a pistol grip and trigger are positioned in front of the action of the firearm; and a rifle configuration in which the pistol grip and trigger are positioned below the action of the firearm. In some implementations, the present invention is directed to a firearm chassis system that is configured for use with the barreled action of an SKS type rifle.

Abstract: A buffer tube for firearms, including assault rifles, carbines, shotguns, and other rifles is disclosed. The floating buffer tube comprises a recoil mitigation mechanism, including a helical spring or an elastic or viscous energy absorption device, and a buttstock mounting bracket mounted outside the buffer tube. The buttstock mounting bracket can rotate relative to the buffer tube, which changes the axial angle of the buttstock relative to the firearm. The angle can be locked under an expansive force by forcing a bolt or pin into grooves to select the proper axial angle of the buttstock relative to the firearm in the field without the user having to disarm himself to perform the angle change.

Abstract: An improved long gun construction is provided. A gun is provided with a kisser device mounted to the butt stock; the kisser device having a flexible projection positioned to engage a portion of the shooter's head, e.g., a corner of the mouth, to assist the shooter in consistently positioning the head to better align the shooter's visual line of sight with the guns line of sight.

Abstract: An apparatus to couple a handguard to a firearm having a barrel nut, wherein the barrel nut includes a cylindrical portion and an outwardly protruding flange with a plurality of scalloped regions, the apparatus comprising at least one handguard mounting member, the handguard mounting member providing a collar configured to at least partially circumscribe the cylindrical portion of the barrel nut, and the least one handguard mounting member configured to fit in at least one of the scalloped regions of the plurality of scalloped regions of the barrel nut to inhibit rotation of the at least one handguard mounting member relative to the barrel nut.

Abstract: A rifle stabilizer assembly attaching to a front stock of a rifle provides an assortment of stabilizing elements to enhance the shooting potential of a rifle, the assembly providing a stabilizer bar attached to the underside of a front rifle stock, a barrier block attachment, a bipod adapter attachment and a tripod adapter attachment, each attachment selectively chosen by a shooter as appropriate for a selected shot while in competition, hunting or combat.

Abstract: An assembly for mounting a handguard to a firearm utilizes a biasing element disposed intermediate the barrel nut and the interior end of the handguard and a clamping element also disposed intermediate the barrel nut and the interior end of the handguard but positioned opposite the biasing element about the perimeter of the barrel nut. One or both of the biasing element and clamping element have multiple surfaces which mimic portions of the exterior profile of the barrel nut to prevent any of longitudinal, axial, or radial misalignment of the handguard relative to the axis of the firearm barrel.

Abstract: An assembly for mounting a handguard to a firearm prevents longitudinal, axial, or radial misalignment relative to the axis of the firearm barrel by utilizing a biasing element disposed intermediate the barrel nut and the interior diameter of the handguard, a clamping element positioned opposite the biasing element about the perimeter of the barrel nut and having a first wedged surface, and a threaded wedge configured to co-act with the first wedged surface of the clamping element to directionally force the clamping element against the barrel nut in a manner that prevents canting of the handguard.

Abstract: A firearm stock with adjustable comb riser has an elongated stock body having a forend and an opposed butt portion having a rear face and an upper comb surface, a butt pad removably connected to the rear face, a cheek rest element having an elongated rest portion positioned above the upper comb surface of the stock, the cheek rest element having a rear panel connected to the rest portion, and at least a portion of the rear panel being captured between the rear face and the butt pad. The rest portion may be a downwardly open channel. The channel may receive at least a portion of the comb surface. The rest portion may include downwardly depending sidewalls. An upper portion of the rear panel may span between the sidewalls. The rear panel may be perpendicular to the rest portion.

Abstract: A range finder for determining a distance to a target object includes a thermoelectric module and a range finding unit. The range finding unit includes a light source for emitting light onto a target object, a light receiving unit configured to receive light reflected by the target object, a distance calculation unit for calculating the distance to the target object based on the reflected light, and a display unit for displaying the calculated distance to the target object. The thermoelectric module generates electricity from a thermal gradient, produced from a user's body heat that is transferred to the module. The electricity power generated by the thermoelectric module powers the components of the range finding unit. Related methods are also provided.

Abstract: Provided is a mechanism for attaching a handguard to a firearm upper receiver that has a pivot lug for attachment to a lower receiver. The mechanism includes a barrel nut having an exterior surface and an annular groove, a handguard having an attachment portion with an axial opening to receive at least a portion of the exterior surface of the barrel nut including the annular groove, and a cross bore that, when the axial opening is assembled onto the barrel nut, substantially corresponds in position to the annular groove and that at least partially intersects the axial opening. The handguard has rearwardly extending fingers that engage opposite sides of the upper receiver pivot lug and a fastener, when inserted into the cross bore, engages the annular groove.

Abstract: A rail system for a firearm is described. In one example, an apparatus includes a barrel nut and a modular rail. The barrel nut is configured to secure a barrel of a firearm and has a non-circular outer surface when taken along an axis that is perpendicular to an axis of the barrel when secured to the firearm. The modular rail has an inner portion having a shape that is complementary to the barrel nut such that the modular rail does not rotate about the axis of the barrel when the inner portion is mated to the outer surface of the barrel nut. The outer surface of the barrel nut may also comprise a cavity and the modular rail may further comprise a rotatable assembly configured to engage the cavity of the barrel nut such that the modular rail does not move along the axis of the barrel.

Abstract: A firearm handguard is disclosed. The handguard comprises a first side section, a second side section coupled to the first side section by a plurality of interlocking fingers, and a bottom section coupled to the first side section and the second side section. The first side section and the second side section each contain at least one accessory mounting aperture. The first side section and the second side section are comprised of a polymer material having molded therein a reinforcement liner including at least one reinforcement aperture. The at least one accessory mounting aperture is aligned with the at least one reinforcement aperture.

Abstract: An adjustable firearm stock has a frame having a forward extending barrel defining a barrel axis and defining an elongated passage adapted to receive a reciprocating bolt, the frame having a first attachment facility registered with the barrel axis and adapted to receive a buffer tube defining a cavity adapted to receive a buffer spring operable to interact with the bolt, the frame having second attachment facility spaced apart from the barrel axis and from the first attachment facility, a telescoping stock defining a sleeve bore coaxial with the barrel axis and closely and slidably receiving the buffer tube, the stock defining a second bore parallel to and laterally offset from the first bore, an elongated support element slidably received in the second bore, and the support element having a forward end operable to removably engage the second attachment facility.

Abstract: A chassis for a firearm includes sidewalls, a forearm, and a first rail portion. The sidewalls define a trigger well and a magazine well therebetween. The sidewalls also define a proximal portion of a channel. The forearm is monolithically formed with the chassis and extends distally from the magazine well. The forearm defines a distal portion of the channel which is configured to receive a barrel of a firearm. The first rail portion extends from the forearm adjacent the channel on a first side of the chassis. The first rail portion defines part of a rail system that is configured to securely mount an accessory directly to the chassis.

Abstract: A hand guard is provided for a firearm, such as a rifle, and may be suitable for maintaining the alignment of the hand guard, and any accessories coupled thereto, relative to the rifle. The hand guard may be configured so that at least a portion of the hand guard can be removed from the firearm and then re-installed on the firearm without significant change in the orientation and position of the hand guard. The hand guard may also be suitable for coupling accessories such as lights, scopes, laser sights, and other firearm accessories to the firearm.

Abstract: The present invention provides a sporterized firearms stock ensemble configured to be coupled to variety of long firearms having a pistol grip interface. In some embodiments, the firearm stock ensemble includes a stock-to-receiver adapter and a sporterized gunstock assembly. The gunstock assembly includes a grip portion, a butt-plate and a stock support section configured to couple the grip portion to the butt-plate. An adjustable and/or detachable cheek-rest may be attached to the stock support section of the gunstock assembly.

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: Systems, devices, apparatus and methods for providing a semi-automatic rifle with ammunition magazine, having a docking port/station for allowing a semi-automatic pistol to be inserted. The trigger on the pistol can be used to fire the rifle and use the rifle ammunition. When the rifle ammunition is depleted, the pistol can be removed and separately fired using its' own ammunition.

Abstract: A stock assembly for a takedown firearm and related methods are disclosed. The stock assembly has a buttstock assembly, and a forend assembly removably couplable to the buttstock assembly at a first location and a second location. When the forend assembly is coupled to the buttstock at the first location, the forend assembly is positioned to support a barrel of the firearm in a longitudinal firing position. When the forend assembly is coupled to the buttstock at the second location, the forend assembly is positioned to support the barrel at an angle relative to the longitudinal firing position.

Abstract: A handguard assembly includes a handguard and a key. The handguard includes a first ear with a first ear inner surface and a second ear with a second ear inner surface that cooperate to define a slot that extends in a longitudinal direction. The key is received in the handguard and includes a main body with an interior side and an exterior side that face in opposite directions from one another so as to define a main body depth and a first projection extending from the interior side of the main body so as to define a first projection depth. The first projection includes a first projection contact face that contacts the second ear inner surface when at least one fastener compresses the slot so as to prevent overtightening of the handguard.

Abstract: A receiver for an AK-47 style firearm includes an upper receiver and a lower receiver. The upper receiver includes a first side element, a second side element coupled to the first side element, a trunnion support formed between the first side element and the second side element proximate a forward end thereof, and a pivot block formed between the first side element and the second side element intermediate the forward end and a rearward end thereof. The lower receiver is hingedly coupled to the pivot block and movable between an open position and a closed position.

Abstract: An ambidextrous compact firearm is disclosed. The firearm provides for ambidextrous use by providing two interchangeable receiving wells that are arranged and configured to interchangeably receive a releasably attachable magazine and a releasably attachable fire control group.

Abstract: A folding pocket pistol has a frame, a barrel connected to the frame and defining a bore and a chamber and movable between an operating position and a loading position, a bolt connected to the frame and operable to reciprocate between a rearward cocked position and a forward battery position, a trigger connected to the frame and having a lever movable between a forward position and a rearward position, a grip connected to the frame and movable between a closed position abutting the frame, and an open position away from the frame, the grip defining a pocket adapted to receive the trigger lever when the trigger lever is in the forward position, and the grip having a pocket block surface adapted to contact a portion of the trigger lever when the trigger lever is in the rearward position, which prevents the grip moving to the closed position.

Abstract: A gun stock with interchangeable cheek rest, including a main body and a cheek rest removably associated with the body and including a supporting structure and a cheek pad that rests on an elastic member associated with the structure; the elastic member is constituted by a leaf spring that is associated with the structure and is easily interchangeable. The cheek rest is applied to the stock body by means of a quick coupling, with or without the use of tools.

Abstract: A segment of a Picatinny rail, the Picatinny rail having front and rear ends, left and right sides, and upper and lower sides, the segment of the Picatinny rail having a left V ridge having a front end and a rear end; having a right V ridge having a front end and a rear end; having a front V ridge spanning between the front ends of the left and right V ridges; and having a rear V ridge spanning between the rear ends of the left and right V ridges.

Abstract: An axially offset foregrip assembly for a long gun has a grip portion having a first grip axis, with a middle portion of the grip portion configured to be grasped by a hand of a user about the first grip axis. The foregrip assembly also has a coupling portion for coupling between the middle portion of the grip portion and a fore-end of a long gun. The long gun has a barrel having a longitudinal axis and a rear grip having a second grip axis, which together define a vertical barrel plane. The coupling portion is configured to couple the grip portion to the fore-end of the long gun such that the first grip axis is in a vertical grip plane horizontally offset from the vertical barrel plane, with the vertical grip plane and the first grip axis substantially parallel to the vertical barrel plane.

Abstract: An adjustable cheek rest for a rifle is formed with a top member, a lower member, a cushion pad and a plurality of accessories. This cheek rest is adjustably and removably affixed to a stock of the rifle. Both the top member and the lower member are in symmetrical shape and are made of moldable plastic materials including the thermoplastic acrylic-polyvinyl chloride material. The top member and the lower member are foldable to fit the longitudinal cross sectional profile of the stick of rifle. There are top fastener holes located on the top member and their corresponding lower fastener holes located on the low member, which are adjustably fastened by fastener. Straps go through strap cuts in the lower member, so as to removably affix the cheek rest to the stock of the rifle.

Abstract: A modular attachment system is disclosed having one or more surfaces designed to compatibly interconnect with a receptacle formed by a grid pattern of a structural support of a gun stock. The grid pattern can be an is a grid pattern, an orthogrid pattern, or a pattern having a combination of both isogrid and orthogrid portions.

Abstract: An adjustable firearm stock has a body defining an elongated channel adapted to receive a rail, the channel having an internal width adapted to receive the width of the head portion of the rail, and opposed elongated hook surfaces defining a hook width adapted to receive the neck of the rail, the hook surfaces bear on the rail to resist separation of the body from the rail, the channel having an elongated floor surface parallel to and opposing the planar mounting surface of the rail, a foot element connected to the body and having a contact surface facing the planar mounting surface of the rail, and a securement facility operably connected to the foot element and to the body, and operable to move the foot with respect to the body to compress the rail between the contact surface of the foot and the hook surfaces.

Abstract: A firearm suppressor cover assembly and method of protecting a user while firing a weapon are disclosed. The cover assembly has an insulating cover assembly, a one or more clamps, one or more standoffs per clamp, and an optional heat shield. The standoffs are coupled to the one or more clamps and in contact with the insulating cover assembly thereby forming an air gap between the suppressor and the insulating cover assembly. The heat shield may be arranged within the air gap.

Abstract: A convertible projectile launching device includes a projectile launching device, such as a paint ball marker, a less than lethal launcher or an airsoft gun, to which a user can secure at least one shell that changes the outer configuration or appearance of a projectile launching device on which it is secured into a MILSIM style projectile launching device. The shell includes at least one front shell portion and at least one rear shell portion that are connected by a hinge so the rear shell portion may pivot about the hinge with respect to the front portion. By operating a locking bolt on the rear shell portion, a user can selectively lock the orientation of the rear portion with respect to the underlying marker. The locking bolt may be spring biased to a locked position.

Abstract: Disclosed is a foldable stock for a firearm having a separate pistol grip with an open end. The stock includes a knuckle having a first portion mountable to a firearm in a fixed position and a second portion pivotally attached to the first portion and movable about a substantially laterally transverse axis relative to the first portion between an unfolded position and a downwardly folded position. A support member longitudinally extends from the second portion and a butt member is carried on the support member. The butt member is selectively longitudinally positionable on the support member relative to the knuckle between at least an extended position and a collapsed position. The butt member includes a heel surface for abutting a user's shoulder with a downwardly extending toe portion.

Abstract: Connection device (1) for connecting a cheek rest (2) to rifle stock (3) with at least one internal space (4), whose cheek rest (2) includes at least one first connection bracket (7) and at least one second connection bracket (9) with which the cheek rest (2) may be adjustably connected to at least one bracket which during use is inserted into the internal space of a rifle stock. The bracket is comprised of a locking block (10) which when connecting the cheek rest (2) to the rifle stock (3) is inserted into the internal space (4) and positioned in relation to the inside of the internal space and through holes drilled in the rifle stock's top side and side, and that the cheek rest's connection brackets are temporarily connected to at least one bracket in the locking block (10) by said holes in the stock's top side. The present invention also encompasses a method for utilizing the device.

Abstract: The present invention provides a sporterized firearms stock ensemble configured to be coupled to variety of long firearms having a pistol grip interface. In some embodiments, the firearm stock ensemble includes a stock-to-receiver adapter and a sporterized gunstock assembly. The gunstock assembly includes a grip portion, a butt-plate and a stock support section configured to couple the grip portion to the butt-plate. An adjustable and/or detachable cheek-rest may be attached to the stock support section of the gunstock assembly.

Abstract: A firearm handguard assembly system is disclosed. The system comprises a handguard including at least four apertures, a barrel nut having a first threaded end and a second smooth end, the threaded end coupled to the handguard, and an index block including at least four apertures, the index block coupled to the handguard by at least four screws, each screw having a head and a tip, the tip threaded through: one of the at least four apertures on the index block, and one of the at least four apertures on the handguard.

Abstract: A carrier for spare ammunition magazines for rifles. The carrier includes a shell that receives the magazine, a latch mechanism that releasably retains the magazine in the shell, and a connector that attaches the carrier body to an article that is worn or that is carried by the user. The latch mechanism may engage an axial protrusion on an end of a rotary-type magazine or may engage a recess in a side of a box-type magazine. The latch mechanism may be spring biased so that when depressed by a finger the magazine drops out a bottom of the carrier. The connector may be, for example, a clip that attaches to a belt or other article that is worn by a user or a clamp that attaches to an accessory rail or other part of a firearm that is carried by a user.