Abstract: The present invention is related to weapons systems. In particular, the present invention is directed to accessory attachment systems for rifles and small arms weapons that enable attached accessory devices to draw power from a central power source and communicate with the user and/or other devices.

Abstract: A firearm may have a plurality of power-consuming accessories that can be attached to the weapon. In order to reduce the weight of these power-consuming accessories, as well as the proliferation of their batteries, the Weapon Accessory Power Distribution System provides a common power source to power the power-consuming accessories attached to the weapon. One or more powered rails are provided to encircle the barrel of the weapon, to provide a point of mechanical and electrical interconnection for the power-consuming accessories to provide quick connect mounting and dismounting of the power-consuming accessory, absent the use of connectors with their tethering cables, which are susceptible to entanglement. The Weapon Accessory Rail Contacts provide the mechanism to electrically interconnect the power-consuming accessory with the powered rail.

Abstract: A gun comprises a fastening for fastening a safety cord. The fastening is movable between a lowered position and a raised position wherein it defines an accessible opening for fastening the safety cord.

Abstract: A firearm and a method for configuring the firearm is described that, in one aspect, includes a tubular magazine having a mechanical connection arranged at one end, a cap having a mechanical connection and configured to cooperate with the mechanical connection arranged on the one end of the tubular magazine, a retaining mechanism arranged in the tubular magazine having a circumferential surface, the retaining mechanism having retaining mechanism locking components arranged on the circumferential surface, and the cap further including an internal peripheral surface having cap locking components arranged along the internal peripheral surface, the retaining mechanism locking components and the cap locking components configured to interact to keep the cap from rotating thereby preventing the cap from accidentally disconnecting from the tubular magazine.

Abstract: The present invention is related to weapons systems. In particular, the present invention is directed to accessory attachment systems for rifles and small arms weapons that enable attached accessory devices to draw power from a central power source and communicate with the user and/or other devices.

Abstract: A firearm may have a plurality of power-consuming accessories that can be attached to the weapon. In order to reduce the weight of these power-consuming accessories, as well as the proliferation of their batteries, the Weapon Accessory Power Distribution System provides a common power source to power the power-consuming accessories attached to the weapon. One or more powered rails are provided to provide a point of electrical interconnection for the power-consuming accessories, absent the use of connectors with their tethering cables, which are susceptible to entanglement. The powered rail(s) are electrically interconnected with a power source, which typically is a battery mounted in the butt stock of the weapon.

Abstract: The handgun identification light is a device attachable to a handgun, the device illuminating the handgun with flashing blue and red lights to provide advanced real-time early warning to police officers who encounter a fellow off-duty plainclothes or undercover officer during their response to the commission of a crime. The device has an on-off switch connected to a battery and flashing LED's disposed along opposing sides of the device. The device includes a tilt switch, grip switch, or gun motion sensor that detects when a user draws the weapon. By activation of the flashing red and blue light device on his weapon, an off-duty plainclothes or undercover police officer who draws the weapon becomes readily identifiable by other officers in proximity as a fellow law officer, thus avoiding misidentification and tragically resultant friendly fire incidents.

Abstract: A forearm stock for a shotgun includes a forearm stock main body, an integral shot shell carrier tube, disposed in the main body, an accessory rail, at the forward end of the main body, and a removable cover, adapted to cover the accessory rail. The forearm stock main body has a forward end, a back end, a contour, and an upper cavity for receiving a shotgun's tube magazine. The shot shell carrier tube is disposed below the upper cavity, and is adapted to receive a plurality of shot shells, with an opening toward the back end. A mechanism for urging the shot shells out of the carrier tube through the opening is provided, and a retention mechanism is adapted to selectively retain the shot shells in the carrier tube. The removable cover has a contour that substantially complements a contour of the main body.

Abstract: A firearm may have a plurality of power-consuming accessories that can be attached to the weapon. In order to reduce the weight of these power-consuming accessories, as well as the proliferation of their batteries, the Weapons Accessory Power Distribution System provides a common power source to power the power-consuming accessories attached to the weapon. One or more powered rails are provided on the handguard, which encircles the barrel of the weapon, to provide a point of mechanical and electrical interconnection for the power-consuming accessories to provide quick connect mounting and dismounting of the power-consuming accessory, absent the use of connectors with their tethering cables, which are susceptible to entanglement. The powered rail(s) are electrically interconnected with a power source, which typically is a battery mounted in the butt stock of the weapon.

Abstract: End plate sling adapter securable to a rifle for a sling, includes a fastener element, sling adapter clamp and locking insert. Sling adapter clamp has a collar defining a central opening extending therethrough, and a pair of fastener housings arranged at respective ends of the collar defining a gap therebetween. Each housing receives a fastener therein such that the fastener extends across the gap and is adjustable to reduce its width. Locking insert has an upper portion with a threaded cradle accommodated within central opening and meshing with a threaded portion of a rifle buttstock receiver extension, and a lower portion extending into the gap.

Abstract: A system is provided for simultaneously carrying two firearms is provided wherein said system has a first firearm; a receiving bracket attached to said first firearm; a second firearm having a trigger; a holster housing said second firearm, said holster having a mounting bracket acting in concert with said receiving bracket such that said mounting bracket is releasably attached to said receiving bracket, and wherein said holster restricts access to said trigger of said second firearm housed within said holster.

Abstract: A barrel clip of unitary plastic construction is used to securely clip onto the barrel of a firearm and simultaneously is able to hook the firearm to a non-human support such as a fence when, during hiking and/or hunting, there is a need for the hiker and/or hunter to be hands free and out of contact with his/her firearm. This lightweight, inexpensive inventive barrel clip helps prevent clogging and dirtying of the firearm barrel. Further it does not cause damage to the environment in which it is used. It is easily stored in a pocket, on the barrel of the firearm, or clipped onto some convenient item being taken on the hike and/or hunt.

Abstract: A modular fore-end rail assembly for mounting onto a firearm includes an upper hand guard, a lower hand guard and a clamping member that combines with the rear portion of the upper hand guard to encircle and clamp onto the barrel nut thereby supporting the entire assembly from the front of the upper receiver and preventing any transfer of load into the barrel. The lower portion of the hand guard is slidably received into channels formed in the upper hand guard and is retained in its installed position by a spring biased detent located in the clamping member. The lower hand guard is removable by simply depressing the detent and sliding the lower hand guard forward. By providing for the easy removal of the lower hand guard, other auxiliary devices may be mounted to the upper hand guard.

Abstract: Embodiments of the invention relate to a detachable swivel and associated mount. In one embodiment, a detachable swivel can be provided. The detachable swivel can include a housing with an axial cavity; at least one retention device; and an internal body operable to mount within the axial cavity, the internal body operable to contact the at least one retention device, wherein the internal body axially translates within the axial cavity between a first position and a second position; wherein an axial force applied to a portion of the internal body and away from the housing causes the internal body to translate between the first and second position.

Abstract: A weapon control device is provided and is coupled within a weapon for controlling accessories and auxiliary components. The weapon control device includes a processor and a connector operably engaging a selector switch of a weapon. The processor receives a signal from the connector in response to movement of the selector switch. The weapon control device further includes one of a transmitter and a transceiver, wherein one of the transmitter and transceiver send a signal in response to the processor receiving a signal from the connector. The weapon control device further includes a weapon accessory, wherein the weapon accessory is activated in response to the signal sent by one of the transmitter and transceiver.

Abstract: A buttstock shoulder stabilizer includes a locator ball having a radially-projecting threaded cylindrical stud that screws into the sling mount of the buttstock endplate of assault rifles, and a socket assembly that mounts on a soldiers flak jacket near his shoulder. The ball can be machined from a structural metal or made of thermoplastic injection molded about the cylindrical stud. The socket assembly has an oblong horizontally-disposed socket connected to a lower approach ramp. A wall surrounds upper and side portions of the socket and the side edges of the approach ramp. When the soldier brings his weapon to firing position, the ball slides up the access ramp an into the oblong socket. The socket assembly is preferably injection molded from a tough structural thermoplastic resin. The socket assembly is provided with slots which enable it to be strapped to a soldiers flak jacket near his shoulder.

Abstract: The invention is a versatile, but simple, rifle sling for carrying a rifle, shotgun, or other long gun over one shoulder. The sling can be attached to the rifle by use of studs or swivels in a conventional manner or can be attached directly to the firearm by using the adjustable loops at each end of the sling. It is constructed from a single strip of leather without the use of any hardware such as buckles, clasps, clamps, hooks, rivets, screws or other devices. Each of the adjustable loops are formed from slide-lock knots.

Abstract: A wraparound gun grip comprises a substantially flat continuous flexible sheet, the substantially flat continuous flexible sheet having a first side and a second side, the first side for adhering to a grip of a gun and the second side for providing improved gripping to a user of the gun, the substantially flat continuous flexible sheet cut to fit the gun's model. The wraparound gun grip is capable of being placed onto the gun by wrapping the wraparound gun grip around the factory grip of the gun. The wraparound gun grip includes one or more finger strips which can either be cut to size or tucked in. The second side can achieve increased friction by including abrading particles thereon (e.g., using sandpaper or grip tape). Alternatively, the grip side can be made from an elastomer, such as a synthetic rubber, or other material with the property of viscoelasticity.

Abstract: A sighting assembly for a firearm includes a scope and a mounting clamp. The mounting clamp includes a ring cap and a ring base that cooperate to surround and hold the scope. The ring cap and ring base securely grip the scope without damaging the scope. Clamping forces are generally tangent to the scope to minimize or limit the formation of dents, grooves, or other types of marring and/or damage to optics or the body of the scope.

Abstract: Embodiments include a method and apparatus for removably connecting a firearm, accessory, or tool to a surface, material, object, belt, vehicle, pocket, or tactical equipment. The apparatus may include a first connecting member operatively connectible to the firearm, accessory, or tool and a second connecting member operatively connectible to the surface, material, object, belt, vehicle, pocket, or tactical equipment. The first connecting member and second connecting member are capable of connection to one another to connect the firearm, accessory, or tool to the surface, material, object, belt, vehicle, pocket, or tactical equipment.

Abstract: A detachable rail platform adaptable for selective and secure mounting to a weapon's rear iron sight assembly, the rear iron sight assembly having a sight base and a sight guard. The detachable rail platform includes a body having forward and rearward portions. The body further includes a rail portion and is positionable to envelop the rear iron sight assembly. A first clamp assembly is selectively engageable with the sight base at a predetermined position. A second clamp assembly is selectively engageable with the sight guard. Upon engagement of the first and second clamp assemblies to the sight base and the sight guard respectively, the rail platform is selectively and securely mounted to the weapon.

Abstract: A firearm may have a plurality of power-consuming accessories that can be attached to the weapon. In order to reduce the weight of these power-consuming accessories, as well as the proliferation of their batteries, the Weapons Accessory Power Distribution System provides a common power source to power the power-consuming accessories attached to the weapon. One or more powered rails are provided on the handguard, which encircles the barrel of the weapon, to provide a point of mechanical and electrical interconnection for the power-consuming accessories to provide quick connect mounting and dismounting of the power-consuming accessory, absent the use of connectors with their tethering cables, which are susceptible to entanglement. The powered rail(s) are electrically interconnected with a power source, which typically is a battery mounted in the butt stock of the weapon.

Abstract: Devices for connecting tubular bodies, such as rifle scopes and flashlights, to armament are disclosed herein. In a first preferred embodiment, the device has a screw and spring combination that is quickly detachable and is adjustable along scope axis. In a second preferred embodiment, the device has a riser portion that extends the cylindrical body out according to desires of a user. In yet another preferred embodiment, the device is modified to engage a sling swivel hole typically provided for a rifle shoulder strap. All embodiments further comprise aluminum alloy with black anodized coating.

Abstract: A semi-automatic or automatic rifle is provided the rifle having: a receiver having a hand guard portion; a barrel having a bore, the bore removably connected to the receiver, the hand guard portion surrounding at least a portion of the barrel; a gas block having a forward end and a rearward end aligned with the barrel; a sleeve removably secured to the forward end of the gas block; a piston slidably received within the gas block, wherein the gas block and the sleeve fluidly couple the piston to the bore of the barrel; wherein an increase in pressure in the bore of the barrel causes the piston to move away from the sleeve; and wherein the sleeve and the piston are each capable of being removed from the rifle through the forward end of the gas block without removing the gas block from the rifle.

Abstract: Embodiments include a method and apparatus for removably connecting a firearm, accessory, or tool to a surface, material, object, belt, vehicle, pocket, or tactical equipment. The apparatus may include a first connecting member operatively connectible to the firearm, accessory, or tool and a second connecting member operatively connectible to the surface, material, object, belt, vehicle, pocket, or tactical equipment. The first connecting member and second connecting member are capable of connection to one another to connect the firearm, accessory, or tool to the surface, material, object, belt, vehicle, pocket, or tactical equipment.

Abstract: A gas block clamping apparatus for a firearm includes a plurality of sections, each including a shaped upper section, and a lower cylindrical section to which the shaped upper section is attached. A plurality of clamp sections are symmetrically disposed on opposite sides of a barrel of the firearm, each clamp section having an upper surface for attaching the gas block to the barrel, a curved surface that aligns the clamp section to an outer surface of the barrel when the clamp sections are tightened, and a lower surface that aligns with the shaped upper section of the gas block. A plurality of fasteners are disposed through a plurality of openings in the lower surface of the clamp sections and the shaped upper surface of the gas block for securing each clamp section to both the barrel and gas block.

Abstract: Rifle body with a basic carrier for anchoring a stock and a barrel, wherein the base carrier is provided on at least one side with the first part of at least one snap fastener connection for detachably anchoring elements which are equipped with the second part of said snap fastener connection.

Abstract: A new sling mount for firearms is disclosed. The sling mount in particular also serves as a recoil lug for the firearm. At least one loop extends outward from the sling mount for use in attaching a sling. This passage may require a hole to be cut into the casing of the firearm for accommodation. The shape, size, contours and location of the sling mount will be dependent upon the intended weapon platform. In any event, the at least one loop provides attachment for a sling while also avoiding entanglement of the sling with a folding stock.

Abstract: A gun comprises a fastening for fastening a safety cord. The fastening is movable between a lowered position and a raised position wherein it defines an accessible opening for fastening the safety cord.

Abstract: A shotgun includes a forearm and a fastening mechanism that is used to couple the forearm to the remainder of the shotgun. The fastening mechanism moves between a first position where the forearm is coupled to the remainder of the shotgun and a second position where the forearm is uncoupled from the remainder of the shotgun. In one embodiment, the fastening mechanism is a lever-type fastening mechanism. In another embodiment, the fastening mechanism includes an anchor that is shaped to be received in a hole in a magazine of the shotgun. The anchor rotates between a first position where the anchor is unable to exit the hole so that the forearm is coupled to the magazine and a second position where the anchor is able to exit the hole so that the forearm is uncoupled from the magazine.

Abstract: A hands-free firearm stabilizer device comprising a means for securing a firearm to perpendicularly to the shoulder of a hunter. The fully adjustable device can be adjusted to accommodate any gunstock and hunter, allowing the hunter to wait for game in a relaxed hands-free position or utilize game calls without sacrificing firearm stability. Additionally, hunters can position themselves in a seated position allowing fine aiming adjustments using his/her knee preventing unwanted noise and movement that could be detected by the game and providing a viable option for hunters with disabilities that may limit their ability participate in the sport of hunting.

Abstract: A slingplate for firearms which mounts to a firearm at its stock or other location and couplably receives a quick disconnect sling swivel or other portion of a sling for a firearm. A sling may be easily and securely attached to a firearm by pushing a quick disconnect sling swivel of a sling into the slingplate. Ball bearings protruding from the shank of the quick disconnect sling swivel are tensionally biased outward, engaging with a keyseat cut into a through hole disposed through the slingplate. The keyseat is one or more keyseat segments, which meet at two or more points within the keyseat and limit the rotation of the quick disconnect sling swivel. A raised bridge of the slingplate provides a gap in between the slingplate and the firearm such that the slingplate can act as a common sling loop, and facilitates removal of debris from the through hole.

Abstract: Embodiments of the application can include an integrated rail system construction for a firearm with transverse ribs or tabs (e.g., picatinny rail) to include an undercut or slot at a front and/or rear face to cooperate with mounting structure for a detachable accessory. Embodiments of a rail structure can include a channel to pass wires used to power accessories mounted to the rail. Embodiments of the application can include methods for manufacturing an integral rail system.

Abstract: Embodiments of the application can include an integrated rail system construction for a firearm with transverse ribs or tabs (e.g., picatinny rail) to include an undercut or slot at a front and/or rear face to cooperate with mounting structure for a detachable accessory. Embodiments of a rail structure can include a channel to pass wires used to power accessories mounted to the rail. Embodiments of the application can include methods for manufacturing an integral rail system.

Abstract: A panel system for covering a lengthwise segment of an elongate firearm mounting rail. The panel system comprises at least one pair of identically shaped panel halves. Each panel half comprises a body having a top, a bottom, an abutting proximal edge and a distal edge. At least one axial tongue extends from the abutting proximal edge and a corresponding axial groove having a groove mouth is defined in the body. A cantilevered clip extends from the abutting proximal edge. A clip receptacle is defined by the body. A proximally extending lip extends from the body bottom near the distal edge. Each panel half is configured so that with the abutting proximal edges brought into abutment, each axial tongue of each panel is received in a corresponding axial groove of the other and each cantilevered clip engages the clip receptacle of the other.

Abstract: A firearm sling assembly includes an anchor adapted for connection to a firearm, a strap forming a single loop and adapted for wearing around a user's neck, and a quick-release mechanism releasably attaching the anchor to the strap. The quick-release mechanism includes a first element having a key groove defined therein, a second element having a key channel defined therein, the key channel extending between a first opening adjacent the key groove and a second opening away from the key groove, a key slidably disposed in the key channel and retractably engaging the key groove through the first opening, a biasing element acting between the key and second element to bias the key into engagement with the key groove, and a release element disposed on the second element and displaceable relative thereto to disengage the key from the key groove.

Abstract: A modular integrated rail system for a firearm includes an upper hand guard having a dovetail rail extending longitudinally between the forward end and the rearward end thereof. The rearward end of the upper hand guard includes a clamp that removably secures the upper hand guard to the barrel nut of the firearm. The rearward end of the upper hand guard and the clamp include clamping surfaces configured to cooperatively engage the outer surface of the barrel nut. The upper hand guard further includes mounting channels that are used to mount accessories, such as a lower hand guard or a grenade launcher, to the upper hand guard. The rear end of the upper hand guard includes alignment tabs for automatically aligning the dovetail rail of the upper hand guard with the dovetail rail of the upper receiver during mounting. The tabs also prevent rotation of the rail system relative to the upper receiver during use.

Abstract: A semi-automatic or automatic rifle is provided. The semi-automatic or automatic rifle includes a receiver having an integral hand guard portion, a barrel having a bore. The bore is removably connected to the receiver, the hand guard portion extending over and surrounding the barrel, an indirect gas operating system has a gas block and a piston. The gas block has a cylinder, the gas block is fitted to the barrel, the cylinder is in communication with the bore. The piston has a piston end and a striking end, the piston end is fitted to the cylinder and has a bolt carrier having a striking surface. When a cartridge is fired, gas displaces the piston end and causes the striking end to strike the striking surface displacing the bolt assembly, wherein, the cylinder and the piston are together removable as an assembly from the firearm without disassembly of the rifle.

Abstract: A spare gun barrel hanging assembly preferably includes an elongated post that has a curvilinear top end, and first and second anchor platforms statically coupled to such a post, which extend orthogonally away therefrom. The assembly may further include a mechanism for removably securing the existing spare gun barrel to a bottom surface of the second anchor platform while the first anchor platform remains spaced thereabove, and a hanger pin removably inserted into the first anchor platform.

Abstract: A strap tensioning apparatus consisting of a strap tensioner attached to a firearm, a spring loaded spool contained within the strap tensioner, the strap having one end releasable attached to the spool, the strap exiting the spool, the other end of the strap attached to the firearm. The spool adapted to be adjustable between three different modes: a lock mode, a release mode, and a free spool mode. The strap tensioner allows a user to easily and safely adjust the tension of the strap to increase comfort, mobility, and safety.

Abstract: A panel system for covering a lengthwise segment of an elongate firearm mounting rail. The panel system comprises at least one pair of identically shaped panel halves. Each panel half comprises a body having a top, a bottom, an abutting proximal edge and a distal edge. At least one axial tongue extends from the abutting proximal edge and a corresponding axial groove having a groove mouth is defined in the body. A cantilevered clip extends from the abutting proximal edge. A clip receptacle is defined by the body. A proximally extending lip extends from the body bottom near the distal edge. Each panel half is configured so that with the abutting proximal edges brought into abutment, each axial tongue of each panel is received in a corresponding axial groove of the other and each cantilevered clip engages the clip receptacle of the other.

Abstract: A tubular or cylindrical member attached to the discharge end of a gun barrel or to any item attached to the discharge end of a gun barrel, e.g. a muzzle brake, silencer, etc., and typically includes a leading edge having a series of distinct, sharp, knife-like edges and a corresponding series of recesses oriented along the axis of the attachment, the recesses typically being between the sharp edges.

Abstract: A clamping sling attachment is configured for use on a carbine or rifle such as the M4 having it's a butt stock mounted on a cylindrical proximally projecting buffer tube, where a distal end of the buffer tube is threaded into the rear of the rifle's receiver. The sling attachment is releasably mountable on the buffer tube as an openable spring-clamp like loop which can be opened enough to go around the buffer tube's cylindrical outer wall. The sling attachment also has a laterally or transversely projecting sling mount defining a substantially vertical, transverse sling-hook receiving through-bore on one side to which the lower end of a weapon sling is releasably attachable. The buffer tube's central axis is the same as the sling attachment loop's central axis and is substantially perpendicular to the sling attachment's transverse sling-hook receiving through-bore.

Abstract: A sling mount system having a mount with associated receiver for releasable connection with a swivel connector having a longitudinal axis that lies in the same plane as a longitudinal axis of a weapon and that angles downward away from the butt stock. The receptacle for the swivel connector is integrally formed in the mount to facilitate silent connection and disconnection of the swivel mount thereto.

Abstract: A gas block clamping apparatus for a firearm includes a plurality of sections, each including a shaped upper section, and a lower cylindrical section to which the shaped upper section is attached. A plurality of clamp sections are symmetrically disposed on opposite sides of a barrel of the firearm, each clamp section having an upper surface for attaching the gas block to the barrel, a curved surface that aligns the clamp section to an outer surface of the barrel when the clamp sections are tightened, and a lower surface that aligns with the shaped upper section of the gas block. A plurality of fasteners are disposed through a plurality of openings in the lower surface of the clamp sections and the shaped upper surface of the gas block for securing each clamp section to both the barrel and gas block.

Abstract: A sling swivel for attachment of a sling or strap to a firearm or other item. The swivel includes a body portion defining a slot for receiving the sling or strap, and a mounting pin having a fixed end attached to the body portion and a free end projecting therefrom. A handle is pivotally mounted to the body portion, and a spring is located within the handle portion to bias the handle portion toward the body portion.

Abstract: A sling swivel component that interfaces with an S.I.R. system to allow attachment of a sling strap thereto while also having a flat head screwdriver integrated into the end of the threaded neck of the swivel body itself is provided. The sling swivel includes a swivel body and a sling swivel pivotably attached to an upper end of the swivel body. The sling or shoulder strap passes through the elongated opening of the sling swivel. The swivel body includes a threaded neck that is sized for threaded engagement within one of the threaded openings that are normally provided along the S.I.R. system such as those found in one of the optional rail segments or directly in the lower hand guard of the rail system.

Abstract: A sling swivel component that interfaces with an S.I.R. system to allow attachment of a sling strap thereto while also having a flat head screwdriver integrated into the end of the threaded neck of the swivel body itself is provided. The sling swivel includes a swivel body and a sling swivel pivotably attached to an upper end of the swivel body. The sling or shoulder strap passes through the elongated opening of the sling swivel. The swivel body includes a threaded neck that is sized for threaded engagement within one of the threaded openings that are normally provided along the S.I.R. system such as those found in one of the optional rail segments or directly in the lower hand guard of the rail system.

Abstract: The invention is a method of measuring oxygen concentration in a package having an oxygen sensitive product disposed therein. The method includes exposing a luminescent compound that is disposed in an interior of the package to light having a wavelength that is absorbed by the luminescent compound so that the luminescent compound is promoted into an excited state. When the exposure of the light is terminated, the excited luminescent compound emits light that is detectable by a detector positioned outside of the package. The intensity of the emitted light is inversely proportional to the oxygen concentration and is used in conjunction with mathematical function that describes the luminescent intensity of the luminescent compound as a function of oxygen concentration and temperature to calculate the oxygen concentration. The method may be used to verify and track the oxygen concentration of a package as it moves through a distribution system.

Abstract: End plate sling adapter securable to a rifle for a sling, includes a fastener element, sling adapter clamp and locking insert. Sling adapter clamp has a collar defining a central opening extending therethrough, and a pair of fastener housings arranged at respective ends of the collar defining a gap therebetween. Each housing receives a fastener therein such that the fastener extends across the gap and is adjustable to reduce its width. Locking insert has an upper portion with a threaded cradle accommodated within central opening and meshing with a threaded portion of a rifle buttstock receiver extension, and a lower portion extending into the gap.