Abstract: A rail accessory attachment system having one or more winged attachment nuts, wherein each winged attachment nut comprises two wing portions extending from a central portion of the winged attachment nut and a nut aperture formed through the winged attachment nut, wherein each winged attachment nut comprises a nut stop; an accessory portion having one or more accessory apertures, wherein each accessory aperture comprises at least one associated accessory stop; and wherein the nut aperture is aligned with the accessory aperture, such that a threaded portion of an attachment bolt interacts with a threaded portion of the nut aperture to rotatably attach or couple the winged attachment nut to the accessory portion, such that the nut stop is aligned relative to the accessory stop so that the winged attachment nut is rotatable relative to the accessory portion between a locked position and an unlocked position.

Abstract: A bolt carrier having a first gas port, wherein the first gas port provides fluid communication between an interior and an exterior of the bolt carrier; a second gas port, wherein the second gas port provides fluid communication between an interior and an exterior of the bolt carrier; and a third gas port, wherein the third gas port provides fluid communication between an interior and an exterior of the bolt carrier.

Abstract: An accessory attachment device having a main chassis; a first locking arm and a second locking arm extending from the main chassis; a channel defined between the first locking arm and the second locking arm; a rail clamp having a clamp extension, wherein the rail clamp is positionable in an extended or engaged position wherein at least a portion of the clamp extension extends through at least a portion of a rail clamp aperture formed in the second locking arm; a tension arm, wherein at least a portion of the tension arm is pivotably positioned within a chassis recess formed in the main chassis; and a cam lever having a cam lever extension portion, wherein at least a portion of the cam lever is pivotably positioned within the tension arm, and wherein the cam lever is pivotable between an open or unlocked position and a closed or locked position.

Abstract: A bolt carrier and removably attachable charging handle including at least some of a bolt carrier having at least one attachment aperture; a handle base having a base attachment portion and a handle attachment portion, wherein the base attachment portion is capable of being removably attached or coupled within at least a portion of the at least one attachment aperture; and a handle sleeve capable of being removably attached or coupled to the handle attachment portion of the handle base.

Abstract: A heat shielding and thermal venting system, having a heat shielding element comprising an elongate, tubular member extending from a first end to a second end; a primary portion formed within a cavity of the heat shielding element; a secondary portion formed within the cavity of the heat shielding element, wherein the secondary portion has a reduced inner cross-sectional area when compared to an inner cross-sectional area of the primary portion; a plurality of entry apertures formed through the heat shielding element proximate the first end; a flare portion formed at the second end; and one or more restricted portions formed along the heat shielding element, wherein each restricted portion includes a reduced inner cross-sectional area, when compared to an inner cross-sectional area of an adjacent interior portion of the heat shielding element.

Abstract: An adjustable buffer optionally including at least some of a buffer element having an elongate buffer element body portion, wherein the buffer element body portion includes an externally threaded portion; a collar nut having a collar nut aperture formed therethrough, wherein at least a portion of the collar nut aperture is internally threaded so as to interact with the externally threaded portion of the buffer element body portion, and wherein one or more collar nut recesses are formed in the collar nut; and a locking collar having a locking collar aperture formed therethrough, wherein the locking collar aperture is formed so as to accept at least a portion of the buffer element body portion therethrough, wherein the locking collar includes one or more locking collar protrusions, and wherein the one or more locking collar protrusions are mateable with the one or more collar nut recesses.

Abstract: A cam pin having a cam pin shaft, wherein said shaft extends from a terminal end surface, along a longitudinal axis, to a shoulder; a firing pin aperture formed through said cam pin shaft; and a head, wherein said head extends from said shoulder, along said longitudinal axis, to a crown, wherein a surface of said crown is finished with a substantially smooth surface.

Abstract: A rail accessory attachment system having one or more winged attachment nuts, wherein each winged attachment nut comprises two wing portions extending from a central portion of the winged attachment nut and a nut aperture formed through the winged attachment nut, wherein each winged attachment nut comprises a nut stop; an accessory portion having one or more accessory apertures, wherein each accessory aperture comprises at least one associated accessory stop; and wherein the nut aperture is aligned with the accessory aperture, such that a threaded portion of an attachment bolt interacts with a threaded portion of the nut aperture to rotatably attach or couple the winged attachment nut to the accessory portion, such that the nut stop is aligned relative to the accessory stop so that the winged attachment nut is rotatable relative to the accessory portion between a locked position and an unlocked position.

Abstract: An adjustable buffer system, including at least some of a buffer, wherein the buffer element includes a collar cavity and a spacer cavity, wherein a bolt aperture is formed between the collar cavity and the spacer cavity, and wherein two or more longitudinally extending slots are formed in at least a portion of the buffer element; an adjustment bolt, wherein the adjustment bolt comprises an externally threaded body portion; a slidable collar than includes a ring portion surrounding a core portion and spaced apart by two or more legs, and wherein prong apertures are defined between the ring portion, the core portion, and the legs, wherein each of the legs corresponds to a longitudinally extending slot, such that the slidable collar is repeatably slidable along at least a portion of the buffer element as rotational force is applied to the adjustment bolt.

Abstract: A heat shielding and thermal venting system, having a heat shielding element comprising an elongate, tubular member extending from a first end to a second end; a primary portion formed within a cavity of the heat shielding element; a secondary portion formed within the cavity of the heat shielding element, wherein the secondary portion has a reduced inner cross-sectional area when compared to an inner cross-sectional area of the primary portion; a plurality of entry apertures formed through the heat shielding element proximate the first end; a flare portion formed at the second end; and one or more restricted portions formed along the heat shielding element, wherein each restricted portion includes a reduced inner cross-sectional area, when compared to an inner cross-sectional area of an adjacent interior portion of the heat shielding element.

Abstract: An ambidextrous bolt release that includes an ambidextrous bolt release lever; a bolt catch pivotable about a bolt catch pivot aperture between a bolt engagement and a bolt release position, wherein the bolt catch comprises a bolt engagement projection, and wherein the bolt catch comprises a bolt catch projection; and a connector bar extending from a first into a second end and attached or coupled between the ambidextrous bolt release lever and the bolt catch, such that vertical movement of the ambidextrous bolt release lever results in vertical movement of the connector bar and rotation of the bolt catch.

Abstract: An anti-rotation handguard system, including a barrel nut having a barrel nut aperture formed therethrough, along a longitudinal axis of the barrel nut, wherein the barrel nut includes a registration groove defined around the outer periphery of the barrel nut; and an anti-rotation ring having a barrel nut aperture formed therethrough, wherein the anti-rotation ring further comprises a first anti-rotation tab extending from the anti-rotation ring, wherein the first anti-rotation tab is formed so as to be received within a gas tube channel of a handguard, and wherein the anti-rotation ring further comprises a second anti-rotation tab extending from the anti-rotation ring, wherein the second anti-rotation tab is formed so as to be received within at least a portion of a compression/registration slot of the handguard.

Abstract: A handguard attachment systems having a handguard with at least one registration/compression slot formed in the handguard; at least one compression adjustment aperture formed through the handguard, spanning at least a portion of the compression/registration slot; a barrel nut having a registration groove around at least a portion of the barrel nut, wherein at least a portion of the barrel nut can be slidably inserted within the handguard; and a registration tab, wherein a portion of the registration tab is sized so as to be at least partially received within at least a portion of the registration/compression slot, wherein the registration tab includes at least one tab alignment aperture formed therethrough, and wherein at least a portion of the registration tab is sized so as to be at least partially received within at least a portion of the registration groove of the barrel nut.

Abstract: A vaporizing device (80) for vaporizing vaporizable matter without burning the vaporizable matter, typically, tobacco, comprises a vaporization chamber (61) for the vaporizable matter, and a gas powered heating unit (1) for heating the vaporization chamber (61). The heating unit (1) comprises a housing (2) having a main cylindrical side wall (4) closed at its respective ends by a first end wall (5) and a second end wall (6) to form a main chamber (8) within which fuel gas is converted to heat. A secondary cylindrical side wall (62) extends from the second end wall (6) to form the vaporization chamber (61) for receiving a tobacco product (81), a cylindrical sleeve (83) of tobacco (84) for producing an aerosol of vaporizable constituents in the tobacco (84). A cylindrical partition wall (10) concentric with the main side wall (4) of the housing (2) extends into the main chamber (8) from the first end wall (5) and defines a primary combustion chamber (11) and a secondary combustion chamber (12).

Abstract: A bolt carrier having a first gas port, wherein the first gas port provides fluid communication between an interior and an exterior of the bolt carrier; a second gas port, wherein the second gas port provides fluid communication between an interior and an exterior of the bolt carrier; and a third gas port, wherein the third gas port provides fluid communication between an interior and an exterior of the bolt carrier.

Abstract: A handguard attachment systems having a handguard with at least one handguard attachment aperture; a barrel nut having at least one registration groove defined by a recess around at least a portion of an outer periphery of the barrel nut; a compression collar having a registration/compression slot formed through the compression collar and at least one compression adjustment aperture formed therethrough, spanning at least a portion of the compression/registration slot; and at least one registration tab, wherein the registration tab is sized so as to be at least partially received within at least a portion of the registration/compression slot and to be at least partially received within at least a portion of the registration groove of the barrel nut, wherein the registration tab includes an alignment aperture formed therethrough, wherein the alignment aperture is sized so as to allow at least one attachment screw to pass therethrough.

Abstract: A muzzle brake having a body portion; a central borehole aperture extending through said body portion, having a central borehole aperture diameter; a first expansion chamber disposed within the central borehole aperture, proximate said initial end, wherein said first expansion chamber has a diameter greater than the central borehole aperture diameter; first baffle walls defining a first baffle port; second baffle walls defining a second baffle port; third baffle walls defining a third baffle port; a pair of expansion apertures, wherein said pair of expansion apertures are formed at an acute angle to one another; and a pair of baffle apertures, wherein said pair of baffle apertures are formed at an acute angle to one another.

Abstract: A mount for an accessory for a firearm having a Picatinny rail. The mount includes a chassis with one or more locking devices. Each locking device includes a lever that moves a plate into engagement with the Picatinny rail to clamp the mount to the rail. Each locking device also includes an actuator which not only moves the plate into engagement with the Picatinny rail but includes a self-tightening mechanism in which a nut and bolt arrangement are tightened by movement of the lever from a first position to a second position while at the same time bringing the plate into engagement with the rail. Each locking device also includes an automatic locking feature for locking the lever in position and a mechanism for preventing accidental operation of the actuator.