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.

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.

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

A pistol grip stock attachment kit is for use with a conventional long gun. A central strap couples an improved butt or recoil plate rearwardly and a pistol grip forwardly. A rearward hinge pivotably couples the plate to the central strap. A forward hinge pivotably couples the pistol grip to the central strap.

Disclosed is a system that allows for the paid firing of a semi-automatic weapon. The system includes both a stabilizer and a forearm brace that are adapted to receive the cylindrical receiver tube of an associated firearm. The receiver tube is adapted to be slidably received within both the stabilizer and the brace. A bearing surface upon the main housing of the firearm cooperatively engages an associated bearing surface within the stabilizer. Along with a finger rest, this allows the firearm to be rapidly fired as the receiver oscillates within the stabilizer and brace. The brace includes sleeve that allows the system to be mounted upon the forearm of a user.

Disclosed is a system that allows for the paid firing of a semi-automatic weapon. The system includes both a stabilizer and a forearm brace that are adapted to receive the cylindrical receiver tube of an associated firearm. The receiver tube is adapted to be slidably received within both the stabilizer and the brace. A bearing surface upon the main housing of the firearm cooperatively engages an associated bearing surface within the stabilizer. Along with a finger rest, this allows the firearm to be rapidly fired as the receiver oscillates within the stabilizer and brace. The brace includes sleeve that allows the system to be mounted upon the forearm of a user.

A rear trunnion assembly includes: a modular rear trunnion fitting including a rear connection feature, an upper portion, and a lower portion; a folding hinge fitting including an upper lug, a lower lug, and a forward portion disposed under the modular rear trunnion fitting, the folding hinge fitting disposed on a rear side of the modular rear trunnion fitting, the forward portion including a first mounting hole configured to interface with the upper portion and a second mounting hole configured to interface with the lower portion; and a pivoting latch fitting configured to pivot with respect to the folding hinge fitting about an axis extending from the upper lug to the lower lug. The pivoting latch fitting may be configured to lock in at least one position with respect to the folding hinge fitting.

An improved tactical adaptive rifle stock is taught which includes a multi-axis adjustable buttstock, and a fore-end consisting of a receiver portion and a forestock, together forming a combined set, which is attached to a flanged stock bolt of the buttstock. The receiver portion includes a cavity forming a receiver bedding interface surface precluding peripheral interference. The receiver portion has a recoil lug pocket with threaded fasteners engaging a rifle action recoil lug. A locking wedge is positioned in a recess of the receiver portion and dovetail grooves are included in a forward end. The forestock incorporates dovetail grooves that mate with the receiver portion grooves when secured with a wedge and wedge threaded fastener. The buttstock, receiver portion and forestock have lightening areas for reducing overall weight. A second embodiment utilizes an adapter, a connector and an AR-15 style handguard or a suppressor, replacing the forestock and a third embodiment employs a one piece fore-end.

An improved tactical adaptive rifle stock is taught which includes a multi-axis adjustable buttstock, and a fore-end consisting of a receiver portion and a forestock, together forming a combined set, which is attached to a flanged stock bolt of the buttstock. The receiver portion includes a cavity forming a receiver bedding interface surface precluding peripheral interference. The receiver portion has a recoil lug pocket with threaded fasteners engaging a rifle action recoil lug. A locking wedge is positioned in a recess of the receiver portion and dovetail grooves are included in a forward end. The forestock incorporates dovetail grooves that mate with the receiver portion grooves when secured with a wedge and wedge threaded fastener. The buttstock, receiver portion and forestock have lightening areas for reducing overall weight. A second embodiment utilizes an adapter, a connector and an AR-15 style handguard or a suppressor, replacing the forestock and a third embodiment employs a one piece fore-end.

An upper receiver assembly for a firearm having an upper receiver with an integral barrel nut, a handguard assembly and a barrel nut assembly with a barrel and lock nut is provided. The barrel is received by the upper receiver and is secured directly to the upper receiver using the lock nut. The upper receiver also includes an integral handguard mounting member to which the handguard assembly may be directly attached. The upper receiver assembly allows the user to attach both the barrel and handguard assemblies directly to the upper receiver, independently of one another.