Abstract: A KeyMod handguard quick release structure is mainly used in rifle gun, including a base body for mounting gun accessories, operation elements, first spring element fixed to each operation element, a positioning element and a second spring element installed between the positioning element and base body, where the seat body has an accommodation space and through hole, the operation elements respectively have a guide portion, and the positioning element is passed through the through-hole. When the base body is to be installed on the KeyMod handguard, an engagement member is placed in a large engagement hole, and the base body is then pressed down, the positioning element being moved upward immediately.

Abstract: A hand guard-to-barrel clamping system having provisions for internal clamping fasteners is disclosed. A hand guard assembly includes upper and lower members each having bores tangential to a longitudinal axis of the assembly. The bores are arranged such that fasteners can be inserted through the bores for securing the upper and lower members together, thereby clamping the hand guard assembly to the firearm. Such fasteners are internal to the hand guard assembly, which provides a slim design that is easier to hold.

Abstract: An adjustable stock assembly includes a housing, a stock rail, a release, a key movable with respect to the release, a latch rotatable about a latch pivot between a latched position, an unlatched position and a disassembly position, and a latch cam pin coupled to the release. The housing is extendable and retractable with respect to the stock rail. The stock rail has a slot and one or more recesses adjacent to the slot that can engage the latch, thereby preventing disassembly of the rail from the housing and further securing the rail in a particular configuration. When partially depressed along with the key, the release disengages the latch from the stock rail recesses, allowing the housing to extend and retract within its adjustment range. The housing can be disassembled from the stock rail when the key and release are fully depressed.

Abstract: A buttstock having a buttplate that comprises a partial hollow cylinder extending from a surface of the buttplate; a static arm extending from a first portion of the partial hollow cylinder; a dynamic arm extending from a second portion of the partial hollow cylinder, wherein the static arm is separated from the dynamic arm by a compression gap, wherein the dynamic arm can be urged toward the static arm; and an at least partially threaded static arm aperture formed through said static arm and aligned with a dynamic arm aperture formed through said dynamic arm.

Abstract: A rifle assembly includes a rifle and a forward rail guard. The rifle includes a receiver, a barrel extending forwardly of the receiver, and forward rails arranged around a portion of the barrel. The forward rail guard mounted to the forward rails and extending from a rear end proximate the receiver and a forward end extending forwardly of a forward end of the forward rails. The forward rail guard can include left and right guard sections configured to separately connect to left and right side forward rails of the rifle and extend below a barrel thereof.

Abstract: An apparatus includes a barrel nut having an inner portion and an outer portion. The inner portion includes a threaded portion and a shoulder. The shoulder is configured to engage a shoulder of a barrel to retain the barrel within a receiver when the threaded portion is coupled to a corresponding threaded portion of the receiver. The outer portion defines an outer diameter such that a gas port of the receiver is exposed independent of a rotational position of the barrel nut relative to the receiver. The outer portion includes an engagement surface and a lock surface. The engagement surface is configured to engage a mounting surface of a handguard. The lock surface defines a frusto-conical shape configured to contact a set screw threadedly engaged with the handguard such that rotational movement of the set screw moves the handguard axially relative to the barrel nut.

Abstract: A handguard comprising a plurality of layers of composite material. At least one of the layers is a ceramic matrix composite and at least one of the layers, and preferably the outer later, is a carbon fiber reinforced composite. In addition, the outermost layer is preferably a woven fabric carbon fiber reinforced composite. In one embodiment, one or more ceramic matrix composite layers is sandwiched between layers of carbon fiber reinforced composite. In another embodiment, an innermost layer is a ceramic matrix composite and the outermost layer is a carbon fiber reinforced composite.

Abstract: A firearm stock connection system that includes a grip with a first hole, a stock system with a second hole, and a button positioned within the first hole and extending through the second hole in an extended position. The stock system may include a frame member, a plate, an extender tube, and a lock. The extender tube may be threaded onto a threaded projection of the plate. The lock may prevent rotation of the extender tube with respect to the threaded projection. The extender tube may include structures that engage a portion of the lock. The structures may be a plurality of slots. The stock system may include a recoil device. The recoil device may be filled with gas. The grip may include a first end, a second end, a gap positioned between the first and second ends, and a bolt aperture extending from the first end to the gap.

Abstract: An adjustable stock for a firearm having a first side, a second side, and a bottom side. The stock includes a fixed body attachable to the firearm and a moveable body slideably connected to the fixed body. The second body includes a butt of the stock. A position selector is disposed to selectively fix the relative position of the moveable body to the fixed body. The position selector is disposed on one of a first side and a bottom side. A position retention device provides a second point of selective fixation between the fixed body and the moveable body. The position retention device is disposed on one of a first side and a bottom side.

Abstract: An adjustable stock for a firearm includes a fixed body attachable to the firearm and a moveable body slideably connected to the fixed body. The moveable body defines a butt of the stock. A hole may be defined in one of the fixed body and the moveable body that has a first side opening and a second side opening disposed opposite the first side opening. A position selector is disposed in the hole and includes a first selector body and a second selector body. The first selector body includes a body portion shaped as a button having an engagement surface and a protrusion extending away from the body portion. The second selector body includes a body portion shaped as a button having an engagement surface and a protrusion extending away from the body portion.

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

Abstract: A rubber panel attachable to a rail system of a firearm is disclosed herein. The rubber panel may include an elongated body comprising a first side, a second side, an upper edge, a lower edge, a first end, and a second end. The rubber panel also may include a gripping surface disposed on the first side of the elongated body. Moreover, the rubber panel may include at least one attachment protrusion disposed on the second side of the elongated body.

Abstract: This disclosure describes systems, methods, and apparatus for a barrel support for a for a firearm stock. In one example, the barrel support has an elongate frame with a longitudinal axis extending between a fore portion and an aft portion, a first concave barrel recess shaped to support a first barrel, the first concave barrel recess positioned on a first side of the elongate frame. The exemplary barrel support also has a second concave barrel recess shaped to support a second barrel, the second concave barrel recess positioned on a second side of the elongate frame. In this example the first barrel is a tapered barrel, and the second barrel is a straight barrel.

Abstract: Disclosed herein is an attachment system for a firearm. One example of the attachment system comprising: a ribbed rail comprising; an upper surface lying in a first plane, a plurality of laterally extending rail ribs projecting transversely from the upper surface; the longitudinally adjacent rail ribs forming recoil grooves therebetween, a keyhole rail comprising; a laterally extending substantially cylindrical surface forming part of a keyhole void through the ribbed rail; a plurality of substantially planar, laterally and longitudinally extending side surfaces forming part of the keyhole void through the ribbed rail, and a laterally extending end surface extending between the side surfaces.

Abstract: A free-floating firearm handguard having vertically offset mounting fasteners.

Abstract: The present invention relates to a stock for a small arms weapon and a modular detachable accessory housing (DAH) for the stock. The DAH may be used to hold a tactical accessory (e.g., a magazine) or provide a closed container. The stock may define a profile which comprises a forward facing segment and a bottom facing segment. The forward facing segment and the bottom facing segment may intersect to form a step. The intersection of the forward facing segment and the bottom facing segment may define an oblique angle. The oblique angle may be an obtuse angle. The forward facing segment may include an accessory mounting rail. Also, the body of the stock may include a cylindrical cavity for receiving a receiver extension, a nested lever receiving cavity, as well as a bore that intersects the lever receiving cavity and the cylindrical cavity.

Abstract: A keymod mount, which is arranged for detachably coupling at a firearm having one or more keymod slots, includes a securing member and a locking member movably extended from the securing member. The securing member includes a mounting body having a top utility surface, and a coupling head downwardly extended from a bottom surface of the mounting body for slidably engaging with a narrow slot portion of the keymod slot to retain said mounting body on a top surface of the keymod slot. The locking member includes a locking body and a locking head downwardly extended from a bottom surface of the locking body for inserting into an enlarged slot portion of the keymod slot after the coupling head is engaged with the narrow slot portion thereof, so as to securely lock up the securing member on the firearm.

Abstract: A firearm includes a receiver, barrel coupled to the receiver, and buttstock. An openable/closeable hinge assembly comprising front and rear hinge elements pivotably mounts the buttstock to the receiver. A latch mechanism carried by the hinge assembly includes a latch pin having latch and lock members on opposing ends. The pin is both slidable and rotatable in the hinge assembly. When the buttstock is in an unfolded position in axial alignment with the barrel axis, the latch member engages a latch recess on a first lateral side of the hinge assembly to latch the buttstock in position. The buttstock may be pivoted laterally outwards about the hinge assembly to a folded position offset from the barrel centerline. Rotating the latch member engages the lock member with a lock recess on the hinge assembly to lock the buttstock in the folded position.

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: A handguard mount assembly and method of forming a handguard mount assembly that includes a mount clip that is defined by a body having a first portion constructed to be received in a slot defined by hand guard and define a smallest diameter associated with a receiver end of the hand guard. The body of the mount clip preferably includes a second portion that radially indexes the mount clip, and a hand guard associated therewith, relative to a receiver associated with the underlying firearm such that the mount clip defines a maximum compression associated with the hand guard and prevents rotation of the hand guard relative to the receiver when assembled.

Abstract: An upper receiver for a firearm is provided. The upper receiver having: a hand guard section integrally formed with the upper receiver; a rail section integrally formed with the hand guard section, wherein the rail section is formed of a first material and the hand guard section is formed of a second material, wherein the second material is molded about the first material.

Abstract: A hand guard mount assembly and method of securing a hand guard to a firearm in a manner that resists rotation and/or longitudinal translation of the hand guard relative to the underlying firearm. The hand guard mount assembly includes a mount clip that is defined by a body having a first portion and a second portion. The first portion of the clip is constructed to be received in a slot defined by a hand guard and defines a smallest diameter associated with a receiver end of the hand guard. The second portion of the clip radially and/or longitudinally indexes the mount clip, and a hand guard associated therewith, relative to at least one of a barrel nut, a barrel, and a receiver associated with the underlying firearm.

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: A stock for a firearm is disclosed. The stock has a length of pull (LOP) adjustment mechanism. The LOP adjustment mechanism is biased towards an engaged configuration and is movable to a disengaged configuration. A locating member protrudes into a stock mounting space and a first arm is in an engagement position when the LOP adjustment mechanism is in the engaged configuration. The locating member is translated such that the locating member does not protrude into the mounting space and the first arm is pivoted into a disengagement position when the LOP adjustment mechanism is in the disengaged configuration.

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 storage compartment having a bracket portion being configured to join with a buffer tube portion of a firearm. The bracket portion may form a generally tubular shape that conforms to the shape of the buffer tube portion. The bracket portion may further include a top side section that is disposed towards the top region of the firearm buffer tube implement, and an open ended bottom side section that extend the full length of the bracket portion along the bottom region of the firearm buffer tube implement. The open ended bottom side section provides passage for the item to be stored. The open ended bottom side section terminates at a pair of flanges. The storage compartment may include, without limitation, a container, holder, repository, receptacle, housing, case, vessel, canister, and cover.

Abstract: Frames for displaying 3D and/or user-selected pieces of artwork and related methods. Some frames comprise frame and rail engagement portions. The frame portions display the artwork and further comprise bodies defining curvilinear cross-sections and display areas on exterior surfaces of the bodies. The rail-engagement portions can couple to the frame portions and further comprise ridges. The ridges extend away from interior surfaces of the frame bodies and can be adapted to engage rails. Flats adjacent to the rails can facilitate securing the frames to the rails. Moreover, display areas of the current embodiment define the artwork. The bodies and rail engagement portions can withstand various shocks at the rails. Moreover, the bodies can be hand guards for weapons. Furthermore, the rail engagement portions can define apertures which receive weapons tools. Moreover, the frame portions can define stops which engage slots associated with the rails. If desired, engravings define the artwork.

Abstract: A toy gun with a built-in hand-tool assembly includes a gun housing and a hand-tool assembly; the gun housing has a concave slot and an inner wall formed inside the concave slot; the inner wall has a stopping portion formed thereon; the hand-tool assembly is detachably attached onto the concave slot; the hand-tool assembly includes a tool housing and a hand-tool; the hand-tool is received in the tool housing and has one end exposed out of the tool hosing; the tool hosing is configured to be fitted onto the concave slot; the hand-tool is configured to be blocked and positioned by the stopping portion. Therefore, with such structure, the toy gun includes the hand-tool built therein in order to facilitate the detachment, assembly or piercing of the air bottle in the toy gun by the user such that the convenience of use of the toy gun is increased.

Abstract: Provided in one aspect is an annular gas ring within or adjacent a barrel to increase the efficient transfer of pressurized gas to one or more gas ports, which may communicate the high-pressure gas from near the chamber distally to a piston to cycle the action of the firearm. Provided in another aspect is a modular quick-disconnect barrel assembly for long-stroke gas-operated firearms such as the AK-47, which allows barrel and gas systems to be replaced together simply by pulling a single pin, thereby allowing the caliber of the firearm to be instantly changed to 12-gauge shotgun or any dimensionally smaller rifle or handgun round. A novel forward-charging handle system is also provided that works with the modular quick-disconnect barrel assembly.

Abstract: An adjustable buttstock clamp for a rifle is disclosed which includes a cam lever having a mechanical locking feature configured to engage with a groove in a buttstock extension shaft when in the locked position. A buttstock recoil pad may be attached to an extension shaft that can telescope in and out of the body of the buttstock, allowing the user to adjust the length of pull of the rifle and angle of the recoil pad. In one embodiment, the shaft includes a number of grooves on its surface along the length of the shaft and the shaft is held in place using a band clamp that is activated by the cam lever. When the cam lever is in the locked position, the locking feature engages with one of the grooves of the shaft to hold the buttstock recoil pad at the desired length and angle.

Abstract: A handguard or other cover for a firearm includes a shell or body with a hollow interior cavity and a retaining structure configured to engage the forearm and retain the shell in place on the forearm, where the retaining structure is releasable to permit removal of the shell from the forearm. The shell may have a concave inner surface and a convex outer surface extending between the first and second edges. The concave inner surface may include at least one tab extending outwardly from the inner surface which is configured to be connected to a slot or opening formed in the forearm for the firearm.

Abstract: This disclosure describes systems, methods, and apparatus for a selectable barrel support that can be inserted into a forend of a firearm stock to support a first barrel type and flipped, rotated, or otherwise moved to support a second barrel type (or third or fourth barrel types). Bull and tapered barrels are examples of two barrel types that the selectable barrel support can be used to support. The selectable barrel support enables a firearm owner or gunsmith to exchange barrel types on a firearm without having to switch out the firearm stock.

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: A rifle fore grip to quickly mount and dismount different attachments includes a body member operably connected to the rifle, the body member having a cavity to receive the attachment, and a latch mechanism operably connected to the body member. The latch mechanism releasably secures the attachment received through the cavity of the body member in a first locked position and releases the attachment in a second unlocked position.

Abstract: In one embodiment, a forend for a firearm includes an adapter module configured to mount below a barrel and in front of a receiver of a specific model of a firearm, such as a shotgun, and a universal firearm accessory module coupled to one or more surfaces of the adapter module. The adapter module can include an upper surface that substantially conforms to a lower surface of the barrel, a longitudinal bore configured to receive a tubular magazine of the firearm concentrically therein, and lower and external side surfaces defining a plug. The accessory module can include a firearm accessory and an upper and internal side surfaces defining a socket configured to receive the plug of the adapter module in a complementary plug-in engagement. The accessory can be a source of a light useful for illuminating a target or aiming the firearm.

Abstract: A rail mounting system for a firearm includes a shroud on the fore end having a plurality of spaced rectangular pads with raised, rectangular top surfaces and opposed sloping sides forming an opposed pair of side walls that intersect with the shroud surface at an acute angle. The rail mounting system also includes a mounting rail having spaced apart relief sections conforming to the locations of the pads with recessed rectangular relief bottoms and opposed sloping sides forming an opposed pair of angled side walls at the same angle as the pad side walls. The side walls of the pads and relief sections are in contact with each other along at least some of their vertical distances. The pad top is spaced from the relief bottom and the shroud surface is spaced from the rail underside.

Abstract: A modular integrated powered hand guard and accessory mount system for a firearm has at least one electrical bus bar for electrically connecting a power source and a powered accessory each secured to the hand guard body. The hand guard body is releasably securable to a firearm, and has at least one dovetail rail. An electrical bus bar received within the hand guard body extends longitudinally between ends of the hand guard body adjacent to the dovetail rail. The electrical bus bar has electrical sockets that are accessible through openings formed in the hand guard body. An accessory mount is configured to engage the dovetail rail, and has a pivotable L-shaped electrical connector for providing an electrical connection from a socket of the electrical bus bar to a powered accessory. A power supply assembly allows a user to connect a battery to a socket on the electrical bus bar.

Abstract: The invention provides a gunstock for BB bullet gun, comprising a gunstock body, a battery compartment provided in the gunstock body for holding a rechargeable battery, and a rear cover arranged at the rear end of the body, wherein the battery compartment is provided at the front end thereof with a fast locking conductive device; the rear cover is provided with a charging coil for charging the rechargeable battery; the charging coil contacts the rechargeable battery via a conductive elastic plate. The charging mode is changed because the rechargeable battery in the art is replaced by a wireless rechargeable battery. The battery does not need to be dismantled and taken out when charging, so that the charging becomes simple and easy to be operated. In addition, the fast locking conductive device arranged at the front end of the battery compartment and the conductive elastic plate arranged on the rear cover overcome the defects of space occupation and disorder caused by a relatively long wire needed in the art.

Abstract: A light weight stiffened gun stock is disclosed herein. The gun stock utilizes structural members oriented in a grid pattern resulting in a high strength-to-weight ratio. The grid pattern can be an isogrid, orthogrid, hoop-grid pattern, or a combination thereof. The structural members define the form of the gunstock, and provide recoil absorption to reduce the amount of recoil experienced by the shooter.

Abstract: Frames for displaying 3D and/or user-selected pieces of artwork and related methods. Some frames comprise frame and rail engagement portions. The frame portions display the artwork and further comprise bodies defining curvilinear cross-sections and display areas on exterior surfaces of the bodies. The rail-engagement portions can couple to the frame portions and further comprise ridges. The ridges extend away from interior surfaces of the frame bodies and can be adapted to engage rails. Flats adjacent to the rails can facilitate securing the frames to the rails. Moreover, display areas of the current embodiment define the artwork. The bodies and rail engagement portions can withstand various shocks at the rails. Moreover, the bodies can be hand guards for weapons. Furthermore, the rail engagement portions can define apertures which receive weapons tools. Moreover, the frame portions can define stops which engage slots associated with the rails. If desired, engravings define the artwork.

Abstract: A modular buttstock assembly that removably mounts to a receiver extension of a firearm may include a main body and a rear body. The main body may have a passage that mates with the receiver extension, while the rear body may be removably coupled to the main body such that any number of swappable, modular rear bodies may be coupled to the main body. The main body may include a toggle assembly with a actuating lever coupled to an bowed or ached actuating spring. The toggle assembly may also include a locking block with a plurality of shafts that distribute the load from the receiver extension to the main body rather than concentrating mechanical stress on a single lock pin.

Abstract: A comb and mounting mechanism for a shoulder fired weapon, wherein the mounting mechanism isolates the comb from the recoil of the shoulder fired weapon, the comb being a piece of the original stock of the shoulder fired weapon along the upper ridge, which is removed from the weapon.

Abstract: A firearm with keyhole-shaped rail mounting points has a forend element having an exterior surface and interior surface. The forend element defines a plurality of rail mounting apertures extending from the interior surface to the exterior surface. Each of the apertures has a first portion with a first diameter to closely receive a fastener head of a first diameter. Each of the apertures has a second portion with a second width less than the first diameter size to receive a shank portion of a fastener. There may be a recess on the interior surface size to receive the fastener head, the recess positioned at the second portion.

Abstract: A grip for a handheld airbrush is described. The grip comprises pliant material piece having a first cylindrical passage that includes an open axial seam and a second cylindrical passage that is closed, where the second substantially cylindrical passage intersects the first substantially cylindrical open passage opposite the open axial seam. The pliant material piece fills area between ends of the first substantially cylindrical passage and of the second substantially cylindrical passage. The grip is installed with the second substantially cylindrical passage over the airbrush handle or stem and the first cylindrical passage around the cylindrical body with the airbrush toggle extending through the open axial seam. Depressed regions on opposite sides of the pliant material piece aid a user's grip. The grip may be employed with a secondary toggle grip for a toggle button of the airbrush.

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.

Abstract: A forearm/hand-guard assembly for a firearm including a generally tubular member through which a barrel of the firearm extends. The tubular member includes structure to which one or more attachments such as different types of sights may be secured. Bearings support the tubular member around the barrel and afford rotation of the tubular member and attachments it carries around the barrel between different positions relative to the barrel; and a retainer releasably retains the generally tubular member in one or more of those positions relative to the barrel.

Abstract: The present disclosure provides an ergonomic handguard that supports rail mounted weapon accessories in a variety of different orientations. The handguard includes sides and bottom surfaces that are ergonomic. The stem includes modular sections of picatinny rail that can be attached to various locations on the handguard as needed to provide a mounting structure for rail based weapon accessories.

Abstract: A magazine release device is affixed to a firearm and operable from either side of the firearm. The device includes a shaft extending between opposite sides of the lower receiver and movable longitudinally between an engaged and a disengaged orientation. A spring biases the shaft into the engaged orientation. A plate, affixed to one end of the shaft, includes an inwardly directed catch that engages with a magazine when the shaft is in the engaged orientation and disengages from the magazine when the shaft is moved to the disengaged orientation. A right hand actuation button is affixed to the shaft on the right side of the lower receiver and a left hand actuation button is affixed to the plate on the left side and each actuation button controls the shaft and plate between the disengaged orientation and the engaged orientation.

Abstract: An eccentric rail mounting system is disclosed. In various embodiments, this system comprises an eccentric rail nut for off-center mounting of a rail on a firearm. The eccentric rail nut has an exterior surface that defines a central axis of the nut and a main bore that defines a central axis of the main bore that is displaced from the central axis of the nut. Components and methods are disclosed in a variety of embodiments.

Abstract: A hinged trigger guard having a base member that includes a base member body portion; a base member projection extending from the base member body portion and having a base member aperture formed therethrough; an extension member that includes an extension member body portion; two ears extending from the extension member body portion, wherein an extension member recess is defined between at least a portion of the ears, and wherein an extension member aperture is formed through each of the ears. An extension member projection extends from the extension member body portion. The extension member is pivotably attached to the base member when the base member aperture is aligned between the extension member apertures and a pivot/installation pin is positioned within the aligned extension member apertures and base member aperture.