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: 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 present invention provides for a stock kit that converts a conventional rifle, such as an SKS, into bullpup configuration. The preferred embodiment of the provided stock kit does not require any permanent modification be made to the host firearm. The stock kit also provides for a rotatable handguard, trigger safety and a magazine release.

Abstract: A firearm handguard assembly system, the system comprising a handguard, wherein the handguard includes a first aperture and a second aperture on a first side, and a third aperture and a fourth aperture on a second side. A barrel nut which includes a groove around the outside diameter ahead of the threaded portion which is threaded onto the upper receiver to provide a mounting surface for the handguard. A locking mechanism is placed around the handguard containing the barrel nut, locked in place by at least a notched cross bolt and a locking cross bolt. The bolts are threaded through a first and second clamp block and the handguard. The bolts pass through the clearance afforded by the groove in the barrel nut without interfering with the various other components located above the barrel nut. An optional indexing plate may be placed between the barrel nut and the handguard to prevent rotation of the barrel nut.

Abstract: A redesigned upper receiver for the AR-15 upper receiver has a cylindrical housing, a barrel mount, and a stock mounting point. The barrel mount and the stock mounting point are positioned on opposite ends of the cylindrical housing. The AR-15 gun barrel is connected to the barrel mount. The charge carrier is inserted to the upper receiver through the stock mounting point. The barrel mount has a tubular body, a gas tube slot, a pin locking slot, an internal threading, and an external threading. The radius of the tubular body is larger than the cylindrical housing. The AR-15 gun barrel is secured within the internal threading. The gas tube is inserted to the gas tube slot. The hand guard is threaded onto the external threading of the upper receiver.

Abstract: An embodiment presents a rifle including an upper receiver, a barrel assembly connected to the upper receiver and a forend with an integrated barrel nut. The integrated barrel nut is connected to the barrel assembly such that the forend is directly connected to and aligned with the upper receiver. Another embodiment provides a method for assembling a firearm. The method includes inserting a barrel assembly into an upper receiver. The method also includes threading a forend with an integrated barrel nut over the outer surface of the barrel assembly. The method also includes checking an alignment between the upper receiver and the forend.

Abstract: A lower receiver for a modular firearm can include a first receiver portion that is removably attachable to a second receiver portion to form the lower receiver. An inner surface of the first receiver portion and an inner surface of the second receiver portion can together define a magazine cavity that is configured to receive a magazine. The lower receiver can be disassembled to provide easy access to inner regions of the lower receiver for cleaning, maintaining, or inspecting the modular firearm.

Abstract: A stock bedding system for a firearm is disclosed. In one embodiment, the stock bedding system includes a stock having a pair of bearing surfaces that are configured and arranged to mutually engage a mating pair of bearing surfaces formed on the barrel-receiver assembly. At least one of the four bearing surfaces has a predetermined convex surface profile which causes the barrel-receiver assembly to roll in an angular direction away from one lateral side of the stock towards the opposite lateral side when the barrel-receiver assembly is mounted to the stock. The convex surface profile acts to tighten the engagement between the opposing bearing surfaces of the barrel-receiver assembly and stock providing a secure and vibration resistant mounting. In one embodiment, the convex-shaped bearing surface is defined by a pillar lug mounted in the stock which engages a mating substantially flat bearing surface formed on the barrel-receiver assembly.

Abstract: A rifle having a receiver with an integral hand guard and a barrel. The barrel is connected to the receiver. The hand guard extends over and surrounds the barrel. A removable hand guard is attached to the receiver by an attachment that stably holds the removable hand guard to the receiver. The attachment is arranged for allowing detachment and removal of the removable hand guard from the receiver without removal of fasteners.

Abstract: A quick-detach, free floating, two-piece forward hand guard assembly for a rifle, which includes an inner barrel nut adapted for connection to the rifle's receiver and an outer barrel nut telescopically received over the inner barrel nut and secured thereto to prevent rotation therebetween. The hand guard assembly also includes a top hand guard element engaged with and extending forwardly from the outer barrel nut in a laterally-stable cantilevered orientation above the rifle's barrel. A bottom hand guard element is matingly engaged with the top hand guard element for surrounding the bottom portion of the rifle's barrel and free-floats from the top hand guard element. A spring-loaded detent screw attaches the top and bottom hand guard elements together and also engages the inner barrel nut. For quick-detach barrel removal, the outer barrel nut may be hinged for clamshell action, with the inner barrel nut having a separable two-piece extension.

Abstract: The invention relates to a stock mounting device for fixing a stock on a receiver of a small arm that includes a clamping pin, and a clamping cam cooperating with the clamping pin, by which the shank can be mounted on the receiver by generating an axial force.

Abstract: A modular firearm comprising an adjustable modular buttstock assembly. The buttstock assembly can include a frame with a central opening. A comb assembly having a cheek piece and a butt plate assembly having a recoil pad each can be mounted to the frame by an adjustment apparatus. Each adjustment apparatus can include of a guide post and/or a threaded adjustment post each received in respective bores in the frame to adjust the positions of the cheek piece and recoil pad. The adjustment apparatus also can include a locking or engagement feature that can selectively increase the friction between the frame and the guide post and/or adjustment post, to help prevent the translation of the guide post and/or adjustment post in the bore in the frame to fix the comb assembly and butt plate assembly in desired positions with respect to the frame.

Abstract: Disclosed is a hand guard attachment system. The system in one form comprising a barrel nut affixed to an upper receiver of the firearm and a jam nut each with a threaded outer surface aligned with and co-axial to a bore of the firearm. The rapid configuration system may include a plurality of indexing pins aligned with, but not coaxial to the bore of the firearm. The hand guard may include an inner threaded surface where the threads cooperate with the threads of the jam nut and barrel nut. A method for attachment of the hand guard to the firearm is also disclosed. The method in one form including the steps of: threading the hand guard onto the jam nut and barrel nut; and tensioning the set screws. The method may include a step where the set screws are adjusted to manipulate the angle of the hand guard relative to the bore.

Abstract: A receiver spur adapted to be mounted behind the trigger and the trigger guard of a firearm such as the AR-15. The spur is configured to substantially conformingly abut the surface of the receiver immediately behind the trigger guard and is secured to the receiver.

Abstract: A recoil reduction stock assembly for a shoulder-fired firearm is described that includes a rear stock section housing a recoil reduction mechanism attachable to firearms with different receiver rear faces by using a front stock section having a rear face attachable to the rear stock section front face and a front face attachable to the rear face of the receiver. The assembly may include one rear stock section housing the recoil reduction mechanism and a plurality of front stock sections, each front stock section having the same rear face profile, but different front face profiles conforming to different receiver rear faces. The recoil reduction mechanism includes a compressible spring and a plunger, whereby recoil of said firearm compresses the spring against the plunger to absorb recoil. The assembly may also include a cheek rest slidably attached over a part of the rear stock section and attached to the recoil mechanism.

Abstract: A rifle assembly includes a central chassis having a vertically aligned opening and a pair of slots extending from the sidewalls into the opening. An action has a pair of projections engageable with the slots in the chassis and is removably securable within the chassis. The action is insertable into and removable from above the chassis, with the action axis at an angle to the chassis axis, to engage the respective action and chassis slot and projection. The action is rotatable with respect to the chassis upon engagement of the respective action and chassis slot and projection to align the axes of the action and chassis and lock the action to the chassis against rotation and removal. A resilient material is disposed between the chassis and action to load the action to the chassis with a force in excess of recoil force of the action.

Abstract: A rifle kit comprises a rifle receiver structure having a central passage configured for having a substantially as-manufactured breech bolt of a pistol mounted therein and has one or more shoulder stock mounting portions configured for having a shoulder stock structure engaged therewith. A substantially as-manufactured breech bolt of the kit is configured by an original equipment manufacturer (OEM) thereof for being mounted on a pistol receiver body configured by the OEM. The rifle barrel is mountable within the central passage of the rifle receiver structure. A chamber end portion of the rifle barrel is configured for engaging a mating portion of the substantially as-manufactured breech bolt. A shoulder stock structure of the kit includes a receiver structure engaging portion configured for allowing the shoulder stock structure to be mounted on the rifle receiver structure exclusively through engagement with the one or more stock mounting portions of the rifle receiver structure.

Abstract: A novel firearm is lightweight, compact, and the method of manufacture is easy. A single or dual tubular magazine positioned below the barrel of a firearm includes the novel use of an inverted U-shaped stamped sheet metal receiver with a cavity for housing a loading and ejection port. The present invention advances the art of firearm manufacture by disclosing a tubular magazine and stamped sheet metal receiver that encloses the major parts of a firearm. The firearm is simple to manufacture, lightweight, approximately 25 to approximately 27 inches in length, and affords an ammunition capacity that is at least twice the capacity of a comparable firearm, such as the Remington® 870 shotgun.

Abstract: A firearm comprising a receiver including a threaded end with the receiver extending along an axis and a hand guard having an exterior surface and defining a hand guard bore along the axis with the exterior surface terminating at a mating surface disposed about the threaded end. The firearm additionally includes a barrel disposed within the hand guard bore and abutting the threaded end and a nut abutting the barrel and engaging the threaded end of the receiver to secure the barrel to the receiver. The firearm further including a securing device with the exterior surface of the hand guard defining an engagement area providing access into the hand guard bore and the securing device interfacing with the engagement area and extending into the hand guard bore to abut the nut and securely mount the mating surface of the hand guard to the receiver.

Abstract: A gun reinforcement comprises a one or more casings between a buttstock and a castle nut of a gun. Said one or more casings slide around a buffer tube of said gun. Said one or more casings cover a portion of said buffer tube. Said one or more casings have a first end and second end.

Abstract: A combination metal/polymer lower receiver for use in a rifle. The lower receiver attaches to a buttstock including a receiver extension, and an upper receiver having a bolt carrier group. The lower receiver comprises a polymeric lower receiver housing having an integral polymeric upwardly extending lobe. The polymeric receiver housing engages with mounting features on the upper receiver to attach the lower receiver to the upper receiver. A metal insert is secured within the polymeric upwardly extending lobe and engages the receiver extension. The metal insert includes insert side walls incorporated within the polymer sidewalls of the lower receiver housing such that the sidewalls are adapted to receive a takedown pin to secure the upper receiver to the lower receiver. The metal insert can further include an elevated plate for displaying component identifiers.

Abstract: An apparatus for mounting accessories on a weapon mount. One embodiment of the apparatus includes an accessory interface system having a forward module coupled to a mounting module. The mounting module of the accessory interface system mounts on a weapon mount. The forward module of the accessory interface system provides a plurality of surfaces for mounting weapon accessories.

Abstract: A detachable handguard for firearms having a receiver defining a handguard mounting flange. Clamp members have hook-like ends that engage the handguard mounting flange and are attached to clamp actuating levers that are pivotally mounted to the handguard. The clamp members are positioned in clamping engagement with the mounting flange and are pivoted to clamping positions to force the handguard into tight assembly with the receiver and to move the connection of the clamp members with the actuating levers over-center, thus causing the clamp actuating levers to remain at their clamping positions. Lock members secure the clamp actuating levers at their clamping positions.

Abstract: A rifle assembly includes a central chassis for carrying an action including a trigger and a trigger guard, the central chassis having a front portion and a rear portion, a rifle fore-end for carrying a barrel, the fore-end having a rear portion, and a fore-end adapter having a rear portion removably secured to the central chassis front portion and a front portion removably secured to the fore-end rear portion. The rifle assembly further includes a rifle butt stock having a front portion and a butt stock adapter having a rear portion removably secured to the butt stock front portion and a front portion removably secured to the central chassis front portion.

Abstract: The present folding stock adapter can be used with many types of military-type assault rifles that typically comprise a receiver extension, buffer and action spring. The present folding stock adapter can be used to add a folding capability to a standard stock allowing it to fold against a rifle's receiver when the weapon is not in use, thus reducing the overall length of the weapon. This reduction in length can facilitate its maneuverability, storage and transport in cramped quarters. The present device can also allow for the quick unfolding of the stock in order to allow the weapon to function and be fired normally.

Abstract: A rifle chassis is able to convert the M1A rifle to have a modular stock system. The chassis may be designed to permit attachment of a shotgun stock to the M1A chassis. For example, a particular model's modular stock system, such as a Mossberg® model 500 shotgun stock, may be attached to the chassis of the present invention to permit interchangeability of stocks on the rifle.

Abstract: An adjustable pistol grip for improving the accuracy of detachable pistol grip firearms, including rifles, improves the ergonomics for the trigger and pistol grip. The pistol grip is user-adjustable and useable for a larger range of hand sizes. The improvement to provide adjustability allows for proper hand and finger positioning providing improved trigger control to the user.

Abstract: A recoil reducing buffer and stock adaptor having a front portion adapted to fit into and connectively engage with the backplate of an H&K-style rifle and a rear portion comprising an aperture adapted to accept and connectively engage with an AR-15/M16 buffer tube. The adaptor attaches to an H&K-style rifle between the action or receiver and the buttstock and allows the rifle to accept and function with a larger and/or stronger H&K-style rifle buffer than its original factory-installed buffer. The adaptor reduces the recoil of an H&K-style rifle by allowing the rifle to function with a larger and/or stronger H&K-style recoil buffer than its original factory-installed buffer. The adaptor also makes substantially all existing H&K-style rifles compatible with substantially all current and existing H&K-style rifle stocks and AR-style rifle stocks and stock accessories.

Abstract: A stock assembly for attachment to a firearm assembly is described. The stock assembly includes a buttstock having a longitudinal conduit and a locking member; a connector tube with, front and back ends slidable within the buttstock conduit between a felly inserted position and a fully extended position, the tube having a longitudinal conduit; an attachment member slidable within the tube conduit between a forward position and a rearward position, the attachment member having a front end attachable to the firearm assembly and a rear end; a spring within the connector tube engaging the rear end of the attachment member, the spring urging the attachment member toward its forward position; and locking means preventing rotation of the attachment member relative to the connector tube, while allowing the attachment member to move within the tube between its forward and rearward positions.

Abstract: A rifle conversion platform assembly comprised of components to fit around an existing action such that attachment locations such as a hand guard, pistol grip, and butt stock attachment locations are provided to have conventional rifle components, which in one form may be components of a high caliber semiautomatic rifle such as an AR-15, attached thereto.

Abstract: A rifle construction includes an action and barrel that seat within a stock. The action is fastened to the stock with flexible fasteners that allow the action to seat properly and maintain alignment in the presence of recoil forces or other forces acting on the fasteners. The fasteners can thus compensate for forces created by misalignment during assembly, temperature changes and/or recoil without adversely affecting the zero of the firearm.

Abstract: An explosive assembly adapted to destruction of artillery and other large ordnance shells; said explosive assembly comprising a pair of hollow half shells; each of said half shells formed with an internal cavity conforming to at least a portion of external surfaces of an ordnance shell to be destroyed.

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 stock assembly for attachment to a firearm assembly is described. The stock assembly includes a buttstock having a longitudinal conduit and a locking member; a connector tube with front and back ends slidable within the buttstock conduit between a fully inserted position and a fully extended position, the tube having a longitudinal conduit; an attachment member slidable within the tube conduit between a forward position and a rearward position, the attachment member having a front end attachable to the firearm assembly and a rear end; a spring within the connector tube engaging the rear end of the attachment member, the spring urging the attachment member toward its forward position; and locking means preventing rotation of the attachment member relative to the connector tube, while allowing the attachment member to move within the tube between its forward and rearward positions.

Abstract: Tactical firearm systems and methods of manufacturing tactical firearm systems are discussed herein. In some embodiments, a tactical weapons platform can comprise a forend assembly adapted to house a portion of a barrel; a receiver assembly detachably coupled to the forend assembly and adapted to interface with a bolt action; and a butt stock assembly detachably coupled to the receiver assembly. In other embodiments, a modular stock assembly for a bolt action rifle can generally comprise a forend assembly, a receiver assembly, and a butt stock assembly. The forend assembly can have a body adapted to house a barrel in a free floating configuration, wherein the body surrounds at least a portion of the length of the barrel. The receiver assembly can be detachably coupled to the forend assembly and adapted to directly interface with a bolt action without bedding. The butt stock assembly can be detachably coupled the receiver assembly by a hinge.

Abstract: A firearm assembly includes a shoulder stock assembly having a hinge arrangement including a first hinge portion mounted within a rear portion of a firearm assembly, and a second hinge portion mounted within the shoulder stock assembly. The shoulder stock assembly and the rear portion of the firearm assembly are movable into and out of locking alignment with one another. A translation linkage is located between the first and second hinge portions for permitting the first and second hinge portions to move into and out of spaced apart alignment with one another. The hinge portions and the translation linkage are substantially concealed from view when the shoulder stock assembly and the rear portion of the firearm assembly are moved into locking alignment with one another.

Abstract: A rifle having a receiver with an integral hand guard and a barrel. The barrel is connected to the receiver. The hand guard extends over and surrounds the barrel. A removable hand guard is attached to the receiver by an attachment that stably holds the removable hand guard to the receiver. The attachment is arranged for allowing detachment and removal of the removable hand guard from the receiver without removal of fasteners.

Abstract: A bump stock and interface system for a semi-automatic firearm. The interface system includes first and second bearing elements. A handle is provided with an integral finger rest. The finger rest is concave to form a cradle for the user's trigger finger. In use, the user grasps the handle with one hand and places an index finger of the same hand firmly on the finger rest. When intending to fire a round of ammunition, the user pushes the receiver forward with their other hand so that the trigger collides with the stabilized finger. Recoil force quickly separates the trigger from the user's finger on the finger rest. The user again pushes forward the receiver to repeat the firing cycle. A lock can be selectively engaged to restrict longitudinal movement of the firearm relative to the handle, thereby returning the firearm to normal semi-automatic functionality.

Abstract: A quick release, free floating, multi-piece forward hand guard assembly for a rifle includes an inner barrel nut adapted to be affixed to a front of the rifle receiver and an outer barrel nut telescopically received over the inner barrel nut and longitudinally secured thereto. The outer barrel nut is non-rotatable with respect to the inner barrel nut. A first hand guard element is engaged with and extends forwardly from the outer barrel nut in a laterally stable cantilevered fashion, and a second hand guard element is matingly engaged with the first hand guard element for surrounding the rifle's barrel and is free floating therefrom. The second hand guard element is attached to the first hand guard element with at least one quick release fastener.

Abstract: A method for stabilizing a weapon, eg a rifle or a handgun, barrel movements when aiming by attenuating the influence of, primarily, unintentional barrel movements on the barrel orientation. The method is especially characterized in the steps of providing a hinge (3) between the barrel front part (1), which comprises the barrel (1?), and the weapon rear part (2), which comprises the weapon butt end (2?), for mutual movability between said parts; continuously detecting the barrel longitudinal direction movement in at least two planes; and controlling at least one angle between the butt end and the barrel longitudinal direction orientation, respectively, by means of a control system (4h, 4v, 5h, 5v, 6h,6v) so that changes in the barrel orientation are counteracted. The invention also relates to a device and a fire arm.

Abstract: A side lock action firearm has a frame with an attached side lock action. The frame includes a rearwardly protruding portion including a mating feature. A stock including a mating element is removably connected to the frame when the mating element is engaged with the mating feature. The mating feature may be a threaded boss. The mating element may be a draw bolt. A forward portion of the stock may be shaped to closely receive the rearwardly protruding portion of the frame. The stock may include a central bore, and the draw bolt may be received by the central bore in the stock.

Abstract: The present invention relates to a mechanism for bedding a receiver frame (3) and/or a barrel (1) in a stock (2) of a firearm, the mechanism having a bearing component (8) which can be attached to the stock (2) and which, on its upper surface, has a bearing surface (10,11) for bearing the receiver frame (3) and/or the barrel (1). To ensure permanent and reproducibly accurate positioning, the lower surface of the bearing component (8) comprises a guide profile (9) for seating the bearing component (8) free from play in the stock (2).

Abstract: A system for removably securing a hand guard to a semi-automatic or automatic rifle is provided. The system having: a first locking assembly for removably coupling a rear end of the hand guard to an upper receiver of the rifle; a second locking assembly for removably coupling a forward end of the hand guard to the rifle; and wherein the first locking assembly and the second locking assembly axially and rotationally position the hand guard with respect to the rifle and wherein the hand guard is not directly secured to a barrel of the rifle.

Abstract: Comprising a firing mechanism, a chamber (3) joined to a fork (4), a barrel (2), a butt (1) and means of fixing the butt (1) to the fork (4), characterised in that said fork (4) comprises at least one projecting stop (6) secured to the outside of said fork (4) which, when the fork (4) is positioned on the butt (1), said stop (6) is fitted into its corresponding housing (5) located on the butt (1) and in that the referred stop (6), of which there is at least one, is positioned after the weld (10) in relation to user's firing position.

Abstract: A barrel mounting and retention device for attaching a barrel to a receiver of a firearm. The barrel mounting and retention device can include a barrel extension disposed at a proximal end of the barrel, with an annular collar extending from the barrel extension and defining a first clamp face. A mounting plate having a second clamp face and defining a first axial bore fits over the barrel of the firearm with the barrel extending through the first axial bore. At least a portion of the second clamp face abuts a portion of the first clamp face as the mounting plate is secured to the barrel extension for mounting and retaining the barrel in communication with the receiver of the firearm.

Abstract: A method and apparatus are disclosed for substituting a different forend assembly in a long gun (e.g., a shotgun) without the use of tools by a user in the field. Applicants' preferred apparatus for substituting a forend comprises: a modified forend carrier that is affixed to the long gun (e.g., the illustrated shotgun); a forend; and tool-less means for removably attaching the forend onto the carrier, or removing the forend off the carrier, without the use of tools, wherein the tool-less means comprises: (i) a tongue-and-groove arrangement in the forend and carrier, and (ii) a releasable lock contained, at least in part, in the carrier. This permits the forend to be swapped out.

Abstract: The present folding stock adapter can be used with many types of military-type assault rifles that typically comprise a receiver extension, buffer and action spring. The present folding stock adapter can be used to add a folding capability to a standard stock allowing it to fold against a rifle's receiver when the weapon is not in use, thus reducing the overall length of the weapon. This reduction in length can facilitate its maneuverability, storage and transport in cramped quarters. The present device can also allow for the quick unfolding of the stock in order to allow the weapon to function and be fire normally.

Abstract: The Accessory Mounting Apparatus uses a quick release clamp for mounting and securely attaching accessories to a dove-tail shaped accessory rail. This apparatus allows for quick assembling and disassembling of accessories and tactical equipment on a weapon accessory rail system. The Accessory Mounting Apparatus consists of a base, latching arm, and over-centered lever to apply clamping force, where the base of the clamping device is keyed to align with a dove-tail shaped rail and fix its location in the direction of the barrel. The latching arm is slid over the dovetail in the accessory rail and the over-centered lever is closed to clamp the device securely around the accessory rail, fixing it in all directions.

Abstract: Rifle upper receivers with integral magazine wells include an extruded elongate inverted U-shaped channel with an interior bore. The interior of the channel has elements formed as surfaces of extrusion. The surfaces of extrusion provide guidance and support for a magazine and trigger guard assembly pins. The present invention is manufactured by extruding an elongate tube in a closed-box profile with an interior bore, milling a series of slots into the top of the tube, machining a bottom channel opening by removing portions of the bottom of the tube, machining holes in the sides of the tube, and machining a recess in the top of the interior of the tube.

Abstract: A handguard system for use on a rifle having a barrel and a receiver, the hand guard system includes a barrel nut having an inner surface with a threaded portion adapted to threadably engage the receiver for securing the barrel to the receiver and an outer surface, and a tubular handguard having an end. The tubular handguard is receivable about the barrel and is received about the barrel nut, engaging the outer surface thereof. REEXAMINATION RESULTS The questions raised in reexamination proceeding No. 90/008,357, filed Dec. 1, 2006, have been considered, and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e) for ex parte reexaminations, or the reexamination certificate required by 35 U.S.C. 316 as provided in 37 CFR 1.997(e) for inter partes reexaminations.