Abstract: A handguard is for a firearm having a firearm upper. The handguard includes a body and a cam. The body is structured to be coupled to the firearm upper. The body has a central lumen having a longitudinal axis. The cam may be coupled to the body in substantially perpendicular alignment to the longitudinal axis, and is configured to rotate between an UNLOCKED position and a LOCKED position. When the cam rotates from the UNLOCKED position toward the LOCKED position, the cam rotates into the central lumen.

Abstract: Suppressor systems and apparatuses for use with firearms are provided. A suppressor includes a core, a main can, and a spring. The core defines a first channel that intersects a radially dispersed hole configuration and is configured to be coupled to a firearm. The main can is disposed around the core and includes a baffle structure. The baffle structure includes a plurality of baffles that define a second channel and a plurality of chambers intersecting the second channel. In various configurations, the core and/or the main are either a unitary piece or each formed from a plurality of components. The spring is configured to axially bias the main can with respect to the core, thereby providing for a valve action that controls a flow of a volume of gas produced by a discharge of the firearm.

Abstract: A barrel for use in a firearm optimized to fire subsonic ammunition with high precision. The barrel groove diameter being within 0.0003 inch of the nominal bullet diameter and the barrel has at least 8 rifled grooves. Each of the plurality of rifling grooves has a sidewall formed from the bore diameter to the groove diameter, wherein the sidewalls formed are substantially parallel and the depth of each of the rifling grooves is shallow. The bullet is obturated as the bullet is forced down the bore. The plurality of shallow barrel grooves forming a plurality of raised lands upon the bullet. The obturated bullet having at least 50% lands formed around the circumference of the bullet body. The buffeting effect upon the bullet in flight by a transition shock wave upon the raised bullet lands is reduced by the plurality of bullet lands and the reduced height of each of the plurality of bullet lands.

Abstract: A barrel for use in a firearm optimized to fire subsonic ammunition with high precision. The barrel groove diameter being within .0003 inch of the nominal bullet diameter and the barrel has at least 8 rifled grooves. Each of the plurality of rifling grooves has a sidewall formed from the bore diameter to the groove diameter, wherein the sidewalls formed are substantially parallel and the depth of each of the rifling grooves is shallow. The bullet is obturated as the bullet is forced down the bore. The plurality of shallow barrel grooves forming a plurality of raised lands upon the bullet. The obturated bullet having at least 50% lands formed around the circumference of the bullet body. The buffeting effect upon the bullet in flight by a transition shock wave upon the raised bullet lands is reduced by the plurality of bullet lands and the reduced height of each of the plurality of bullet lands.

Abstract: A blast control device for a firearm is disclosed. The blast control device may include a muzzle brake comprising a first end, a second end, a top, a bottom, a bore, one or more baffles, one or more gas openings disposed between the one or more baffles, an alignment channel disposed on the top, one or more gas holes disposed on the top within the alignment channel, an alignment groove disposed at an end of the alignment channel, and a latch notch. The blast control device also may include a blast shield attachable around the muzzle brake. The blast shield may include an alignment protrusion, a latch assembly, a plurality of internal ribs, and one or more gas ports.

Abstract: An adjustable buttstock may be attachable to a buffer tube with a plurality of position slots. The adjustable buttstock may include a body slidably attached to the buffer tube, a butt attached to the body, and a lever assembly rotatably attached to the body.

Abstract: A barrel nut assembly for a firearm is disclosed. The barrel nut assembly may include a barrel nut comprising a plurality of expansion flanges. The barrel nut assembly also may include an expansion plug comprising an expansion surface. The expansion surface may be configured to abut and expand the plurality of expansion flanges when the expansion plug is attached to the barrel nut.

Abstract: An adjustable buttstock may be attachable to a buffer tube with a plurality of position slots. The adjustable buttstock may include a body slidably attached to the buffer tube, a butt attached to the body, and a lever assembly rotatably attached to the body.

Abstract: A travel limiting device is disclosed. In one embodiment, the device may be positionable within a position slot and a channel in a buffer tube of a firearm to limit the adjustability of a buttstock. The device may include a main body having a stop surface. The main body may be positionable within the channel. The device also may include a protrusion extending from the main body. The protrusion may be positionable within the position slot.

Abstract: A blast control device for a firearm is disclosed. The blast control device may include a muzzle brake comprising a first end, a second end, a top, a bottom, a bore, one or more baffles, one or more gas openings disposed between the one or more baffles, an alignment channel disposed on the top, one or more gas holes disposed on the top within the alignment channel, an alignment groove disposed at an end of the alignment channel, and a latch notch. The blast control device also may include a blast shield attachable around the muzzle brake. The blast shield may include an alignment protrusion, a latch assembly, a plurality of internal ribs, and one or more gas ports.

Abstract: A barrel nut assembly for a firearm is disclosed. The barrel nut assembly may include a barrel nut comprising a plurality of expansion flanges. The barrel nut assembly also may include an expansion plug comprising an expansion surface. The expansion surface may be configured to abut and expand the plurality of expansion flanges when the expansion plug is attached to the barrel nut.

Abstract: Herein is described an ambidextrous tactical latch that allows a left handed shooter the ability to charge an M-16 or AR-15 rifle or the like in the same manner as a right handed shooter. The left handed shooter grasps the pistol grip of the weapon with their left hand. With their right hand in regular fashion, they grasp the tactical actuator located on the right hand side of the charging handle and pull it in a backward motion to effect charging the weapon.