A device implementable on a firearm includes an adjustable multi-angle grip. The grip includes an upper portion and a lower portion. The upper portion is configured to be coupled to a receiver portion of the firearm. The lower portion is pivotably coupled to the upper portion via a hinge on a front side of the grip such that an angle between a longitudinal axis of the lower portion and a longitudinal axis of a barrel of the firearm is variable.
A device implementable on a firearm includes a grip frame having a frame portion and a grip portion. The frame portion is configured to receive a slide assembly of the firearm thereon. The grip portion is configured to receive a magazine of the firearm therein. The frame portion has a physical feature on at least a left side or a right side thereof functioning as a thumb rest.
A device implementable on a firearm includes a one-piece sight functioning as a rear sight or a front sight when installed on the firearm. The one-piece sight includes a notch and a user-facing side configured with a first surface aligned with the notch and a second surface on two opposite sides of the first surface. The first and second surfaces are sloped at first and second angles, respectively, to reflect an ambient light at different angles.
A castle nut has a groove around an exterior circumference thereof. An end plate has a through hole extending in a direction perpendicular to a longitudinal axis of a firearm. When a buffer tube is threaded onto a lower receiver of the firearm with the buffer tube traversing through the castle nut and the end plate, the castle nut can be screwed in a direction toward the lower receiver to fasten the end plate against the lower receiver. When the end plate is fastened against the lower receiver by the castle nut, the securing device can be screwed into the through hole of the end plate such that a portion of the securing device is engaged with the groove of the castle nut to prevent the castle nut to be loosened by being unscrewed in a direction away from the lower receiver.
A device implementable on a firearm includes a magazine funnel and a securing mechanism. The magazine funnel is configured to couple to an opening at a bottom of a grip of the firearm. The magazine funnel has a first side and a second side opposite the first side. The securing mechanism protrudes from the first side of the magazine funnel such that, when a gap related to the securing mechanism is expanded while the magazine funnel is coupled to the opening with the securing mechanism inserted into a void of the grip, the securing mechanism secures the magazine funnel to the grip of the firearm.
An apparatus implementable on a pistol includes a compensator and a guide rod. The guide rod has a front distal end and a rear distal end opposite the front distal end. The compensator includes a muzzle brake having a recoil-reduction device, a first through hole and a second through hole. When the compensator is implemented on the pistol: (a) the recoil-reduction device redirects propellant gases to counter a recoil force upon firing of a round of ammunition by the pistol; (b) the first through hole is aligned with a barrel of the pistol to allow firing of the round of ammunition, and (c) the second through hole receives the front distal end of the guide rod therein such that an interface between the guide rod, the muzzle brake and a slide of the pistol is keyed to prevent rotation of the guide rod.
A scope mount implementable on a firearm includes a base and an adjustable cantilever. The base has a first primary side and a second primary side opposite the first primary side, with the second primary side configured to accommodate and mount onto a rail on the firearm. The adjustable cantilever is slidingly installable on the first primary side of the base and is configured with a scope mounting feature to receive a scope thereon. The adjustable cantilever can be fixable at one of plural positions along a longitudinal axis of the base and on the base such that a total length of the scope mount, measured from one distal end of the scope mount to an opposite distal end of the scope mount, varies between a shortest length and a longest length according to at which one of the positions on the base the adjustable cantilever is fixed.
Adjusting the length of firearms using stock assembly systems are provided. In one embodiment, a stock assembly comprises: a receiver extension having a first interface configured to mate with a second interface of a stock; the first interface comprising a base portion, a plurality of first edges, and a plurality of first grooves; the second interface comprising a slot portion, a plurality of second edges, and a plurality of second grooves; wherein the plurality of first edges are in contact with the plurality of second grooves and the plurality of first grooves are in contact with the plurality of second edges of the second interface to mate the stock with the receiver extension; and wherein the base portion of the first interface is in contact with the slot portion of the second interface allowing the stock to slide along a horizontal axis of the receiver extension.
An apparatus implementable on a firearm may include a takedown pin and a pivot pin. The takedown pin holds together a rear portion of lower and upper receivers of the firearm. The pivot pin holds together a front portion of lower and upper receivers of the firearm. Each of the takedown pin and pivot pin respectively includes a head and a generally cylindrical shank extending from the head toward a distal end thereof opposite the head. The shank is configured with: (1) a first groove track extending along a longitudinal axis of the shank, (2) a second groove track parallel to the first groove track and extending along the longitudinal axis of the shank, and (3) a linking groove track extending around the longitudinal axis of the shank and linking the first groove track and the second groove track.
Various examples of a tool-free dust cover for firearms are described. The dust cover is a monolithic piece having a cover plate, a first connection portion, and a second connection portion, with at least one of the first connection portion and the second connection portion being elastically deformable to allow the dust cover to be pivotably coupled to a receiver portion of the firearm. The first connection portion is received in a cavity of a first hinge knuckle on the receiver portion next to a first long side of an ejection port of the receiver portion. The second connection portion is received in a cavity of a second hinge knuckle on the receiver portion next to the first long side of the ejection port. When in an open position, the cover plate uncovers the ejection port. When in a closed position, the cover plate covers the ejection port.
An apparatus implementable on a firearm includes a quick-detach (QD) handguard assembly which includes a handguard and a locking mechanism. The handguard has a hollow therein allowing the handguard to surround a barrel of the firearm with the barrel traversing through the hollow along a longitudinal axis of the handguard. The locking mechanism is coupled to the handguard. The locking mechanism includes a QD lever configured to lock the handguard to a barrel nut of the firearm and unlock the handguard from the barrel nut.
A quick-disconnect (QD) sling swivel includes a main body receivable in a socket on a firearm, a locking mechanism coupled to the main body, and an actuation mechanism coupled to the locking mechanism and depressible in a direction generally perpendicular to a longitudinal axis of the QD sling swivel. When the actuation mechanism is depressed, the locking mechanism is in a first position such that the main body is decouplable from and is freely movable in and out of the socket. When the at least one actuation button is not depressed with a portion of the main body received in the socket, the locking mechanism is in a second position such that the main body is interlockingly received in the socket with the locking mechanism engaged therewith.
F16B 21/06 - Releasable fastening devices with snap action
F41C 33/00 - Means for wearing or carrying smallarms
F16B 21/16 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding itStud-and-socket releasable fastenings without screw-thread by separate parts with grooves or notches in the pin or shaft
An apparatus implementable on a pistol includes a compensator and a guide rod. The guide rod has a front distal end and a rear distal end opposite the front distal end. The compensator includes a muzzle brake having a recoil-reduction device, a first through hole and a second through hole. When the compensator is implemented on the pistol: (a) the recoil-reduction device redirects propellant gases to counter a recoil force upon firing of a round of ammunition by the pistol; (b) the first through hole is aligned with a barrel of the pistol to allow firing of the round of ammunition, and (c) the second through hole receives the front distal end of the guide rod therein such that an interface between the guide rod, the muzzle brake and a slide of the pistol is keyed to prevent rotation of the guide rod.
An apparatus implementable on a firearm may include a takedown pin and a pivot pin. The takedown pin holds together a rear portion of lower and upper receivers of the firearm. The pivot pin holds together a front portion of lower and upper receivers of the firearm. Each of the takedown pin and pivot pin respectively includes a head and a generally cylindrical shank extending from the head toward a distal end thereof opposite the head. The shank is configured with: (1) a first groove track extending along a longitudinal axis of the shank, (2) a second groove track parallel to the first groove track and extending along the longitudinal axis of the shank, and (3) a linking groove track extending around the longitudinal axis of the shank and linking the first groove track and the second groove track.
A castle nut has a groove around an exterior circumference thereof. An end plate has a through hole extending in a direction perpendicular to a longitudinal axis of a firearm. When a buffer tube is threaded onto a lower receiver of the firearm with the buffer tube traversing through the castle nut and the end plate, the castle nut can be screwed in a direction toward the lower receiver to fasten the end plate against the lower receiver. When the end plate is fastened against the lower receiver by the castle nut, the securing device can be screwed into the through hole of the end plate such that a portion of the securing device is engaged with the groove of the castle nut to prevent the castle nut to be loosened by being unscrewed in a direction away from the lower receiver.
Examples of a self-releasing magazine and a magazine follower assembly thereof for firearms are described. The magazine follower assembly includes a casing and a self-releasing actuator received in the casing. When in use, the magazine follower assembly generally moves along a first axis with respect to the casing between a first position in the magazine when the magazine is fully loaded and a second position in the magazine when the magazine contains no ammunition cartridge. When the magazine follower assembly is at the second position in the magazine, the self-releasing actuator is configured to actuate a magazine release mechanism of the firearm to disengage the magazine from the firearm so that the magazine is detachable from the firearm.
F41A 9/66 - Arrangements thereon for charging, i.e. reloading
F41A 17/38 - Magazine safeties locking the magazine in the gun
F41A 9/67 - Arrangements thereon for charging, i.e. reloading having means for depressing the cartridge follower, or for locking it in a depressed position
Adjusting the length of firearms using stock assembly systems are provided. In one embodiment, a stock assembly comprises: a receiver extension having a first interface configured to mate with a second interface of a stock; the first interface comprising a base portion, a plurality of first edges, and a plurality of first grooves; the second interface comprising a slot portion, a plurality of second edges, and a plurality of second grooves; wherein the plurality of first edges are in contact with the plurality of second grooves and the plurality of first grooves are in contact with the plurality of second edges of the second interface to mate the stock with the receiver extension; and wherein the base portion of the first interface is in contact with the slot portion of the second interface allowing the stock to slide along a horizontal axis of the receiver extension.
An apparatus implementable on a firearm may include a takedown pin and a pivot pin. The takedown pin holds together a rear portion of lower and upper receivers of the firearm. The pivot pin holds together a front portion of lower and upper receivers of the firearm. Each of the takedown pin and pivot pin respectively includes a head and a generally cylindrical shank extending from the head toward a distal end thereof opposite the head. The shank is configured with: (1) a first groove track extending along a longitudinal axis of the shank, (2) a second groove track parallel to the first groove track and extending along the longitudinal axis of the shank, and (3) a linking groove track extending around the longitudinal axis of the shank and linking the first groove track and the second groove track.
A detachable firearm attachment implementable on a firearm may include a main body and a fastening device. The main body may have a first primary side and a second primary side. The first primary side may be configured to attach to both a first handguard rail system of a first handguard of the firearm and a second handguard rail system of a second handguard of the firearm. The fastening device may be configured to fasten the main body to the first handguard and the second handguard. The first handguard may include a plurality of first openings of a first shape with first dimensions. The second handguard may include a plurality of second openings of a second shape with second dimensions. The first shape and the second shape may be different. The first dimensions and the second dimensions may be different.
Firearm attachments, namely, modular external rail systems for firearms; Firearm attachments, namely, modular external rail systems for attaching accessories to firearms; Firearm tactical rails
Firearm attachments, namely, modular external rail systems for firearms; Firearm attachments, namely, modular external rail systems for attaching accessories to firearms; Firearm tactical rails
