Abstract: The present disclosure relates to a firing mechanism for a firearm, wherein the firing mechanism includes: a housing having a central bore, a cam surface, and a striker sear slot; a striker sear pivotally connected to the housing and positioned within the striker sear slot, the striker sear having a striker head engagement surface; and a striker head movably positioned within the central bore, the striker head having a striker sear engagement surface configured to interface with the striker head engagement surface of the striker sear.

Abstract: The disclosure relates to a chamber flag with a substantially Z-shaped body having a central portion and a rod extending from the body; a chamber flag having a body defining an opening having an opening axis, and a rod extending from the body and having a rod axis substantially parallel to the opening axis, wherein the chamber flag is configured to support upper and lower receivers of a firearm at a fixed angle; and a method of temporarily securing a position of upper and lower receivers of a firearm by inserting a rod of a chamber flag into a pin channel of the upper receiver, inserting a portion of a body of the chamber flag into the lower receiver, wherein the lower receiver defines a pin opening, and inserting a pin through the pin opening and an opening defined by the body of the chamber flag.

Abstract: A muzzle end accessory for a firearm includes features to both suppress sounds and flashes associated with firing of the firearm. The features that provide sound and flash suppression may be formed, at least partially, in a core structure that is interior to the accessory and thus protected from damage by contact with external elements. The core structure may be of a unitary structure, promoting structural integrity and ease of manufacturing.

Abstract: A sound suppressor for a firearm is disclosed. In accordance with some embodiments, the disclosed sound suppressor may include a thread and taper arrangement and a latching mechanism configured, for example, to secure the sound suppressor to a flash suppressor and/or the muzzle of a host firearm. Such features can help, in accordance with some embodiments, to prevent or otherwise reduce the opportunity for the sound suppressor to inadvertently back off of the host weapon during firing. Also, the disclosed sound suppressor may be configured, in accordance with some embodiments, such that application thereto of a wrench or other suitable torquing device automatically disengages the latching mechanism. In some instances, this may allow an operator to apply torque to rotate the sound suppressor while simultaneously disengaging the locking/retention feature. The mechanical advantage provided by the wrench can help to break fused areas resulting from copper and/or carbon fouling.

Abstract: A two-position firearm safety assembly is disclosed. The assembly includes a lever detent spring and a first lever, both of which are pivotally coupled to a firearm frame. The assembly can also include a second lever and a link connecting the two levers. The detent spring is in contact with the link and/or the first lever at an assembly pivot point, putting the detent spring in compression. The compression force on the detent spring provides two distinct safety assembly positions (e.g., fire and safe positions), and prevents the safety assembly from perching between the two-positions. The properties of the detent spring (e.g., the material, shape, hardness, spring constant, pre-compression in the safety assembly, etc.) can be customized as desired to adjust the properties of the safety assembly, such as the forces needed to toggle the assembly.

Abstract: A muzzle flash suppressor is disclosed. In accordance with some embodiments, the disclosed flash suppressor includes a plurality of prongs having inner surfaces which taper along their length, providing angled expansion of the primary bore of the flash suppressor in the direction of projectile travel. The inner prong surfaces located along the gas flow path angle outwardly, a multi-radius surface is formed between each pair of neighboring prongs, and chamfers and radii are provided at the prong ends. Some embodiments provide for balanced and gradual gas expansion axially and/or radially along the projectile path, thereby allowing muzzle gases to expand/bleed off in a substantially laminar pattern. In some cases, this reduces secondary ignition of muzzle gases and the ambient air, thereby reducing muzzle flash. Also, some embodiments provide for easy clearance or correction of muzzle obstructions, thereby protecting against damage to the flash suppressor and host weapon.

Abstract: An accessory mount includes a barrel connector and multiple accessory connectors. The barrel connector removably assembles the accessory mount to the barrel of the firearm in axial alignment with the firing axis of the firearm. The accessory mount includes one or more of the accessory connectors to securely and removably assemble accessories to thereto. The accessory connectors include axial alignment features to axially align accessories with the firing axis and/or rotational alignment features to align the accessory alignment with the firing axis. Accessory connectors also include that enable an accessory to be securely assembled to the accessory mount in different rotational orientations.

Abstract: A sound suppressor for a firearm is disclosed. In accordance with some embodiments, the disclosed sound suppressor may include a thread and taper arrangement and a latching mechanism configured, for example, to secure the sound suppressor to a flash suppressor and/or the muzzle of a host firearm. Such features can help, in accordance with some embodiments, to prevent or otherwise reduce the opportunity for the sound suppressor to inadvertently back off of the host weapon during firing. Also, the disclosed sound suppressor may be configured, in accordance with some embodiments, such that application thereto of a wrench or other suitable torquing device automatically disengages the latching mechanism. In some instances, this may allow an operator to apply torque to rotate the sound suppressor while simultaneously disengaging the locking/retention feature. The mechanical advantage provided by the wrench can help to break fused areas resulting from copper and/or carbon fouling.

Abstract: A muzzle flash suppressor is disclosed. In accordance with some embodiments, the disclosed flash suppressor includes a plurality of prongs having inner surfaces which taper along their length, providing angled expansion of the primary bore of the flash suppressor in the direction of projectile travel. The inner prong surfaces located along the gas flow path angle outwardly, a multi-radius surface is formed between each pair of neighboring prongs, and chamfers and radii are provided at the prong ends. Some embodiments provide for balanced and gradual gas expansion axially and/or radially along the projectile path, thereby allowing muzzle gases to expand/bleed off in a substantially laminar pattern. In some cases, this reduces secondary ignition of muzzle gases and the ambient air, thereby reducing muzzle flash. Also, some embodiments provide for easy clearance or correction of muzzle obstructions, thereby protecting against damage to the flash suppressor and host weapon.

Abstract: Improvements and modifications in the rifle and submachine gun platforms to improve accuracy, improve user functionality, simplify and improve the machining and manufacturing and assembly process are presented. Specifically, the disclosure describes a hinge pin connection system for an access door, a retention mechanism that eliminates freedom of movement for hand guards, cuts in a barrel extension that reduce or eliminate barrel rotation, a barrel retention mechanism that allows for securing of a barrel from the sides of a firearm, a dove tail connection between an up rod and bolt carrier, and an aperture located on a lower receiver for mounting slings and other accessories.

Abstract: A two-position firearm safety assembly is disclosed. The assembly includes a lever detent spring and a first lever, both of which are pivotally coupled to a firearm frame. The assembly can also include a second lever and a link connecting the two levers. The detent spring is in contact with the link and/or the first lever at an assembly pivot point, putting the detent spring in compression. The compression force on the detent spring provides two distinct safety assembly positions (e.g., fire and safe positions), and prevents the safety assembly from perching between the two-positions. The properties of the detent spring (e.g., the material, shape, hardness, spring constant, pre-compression in the safety assembly, etc.) can be customized as desired to adjust the properties of the safety assembly, such as the forces needed to toggle the assembly.

Abstract: Improvements and modifications in the rifle and submachine gun platforms to improve accuracy, improve user functionality, simplify and improve the machining and manufacturing and assembly process are presented. Specifically, the disclosure describes a hinge pin connection system for an access door, a retention mechanism that eliminates freedom of movement for hand guards, cuts in a barrel extension that reduce or eliminate barrel rotation, a barrel retention mechanism that allows for securing of a barrel from the sides of a firearm, a dove tail connection between an up rod and bolt carrier, and an aperture located on a lower receiver for mounting slings and other accessories.