Abstract: A firearm stock with a reinforcing member and related methods are disclosed. A reinforcing member has a proximal end having at least one proximal tab shaped to engage a firearm housing, and a distal end having a locking pin engagement surface and at least one distal tab shaped to engage at least one of the firearm housing or a battery tube. The member also has a longitudinal axis extending between the proximal end and the distal end, and a first wall having a longitudinal length greater than a width. The member also has at least one sidewall one of coupled to or unitary with the first wall, and at least one side tab positioned on the sidewall and extending towards a center portion of the reinforcing member.

Abstract: The present disclosure describes a foldable firearm that collapses into a folded state under spring pressure. The foldable firearm may include a foldable grip assembly. The foldable grip assembly may include a foldable pistol grip, a foldable trigger assembly, a folding bar, and a foldable hand stop. The foldable grip assembly may fold into the top shell of the foldable firearm. The foldable firearm may also include an ambidextrous charging handle assembly that may include a bottom portion, a top portion, a guide bar, and two opposing charging handles. The charging handles may be pulled to unfold the foldable firearm, and/or butterflied such that pivoting one charging handle causes the other charging handle to pivot. The first-pivoted charging handle may then be pulled rearwards to unfold the firearm. The first-pivoted charging handle may then be pulled further rearwards to rack the slide of the foldable firearm.

Abstract: A stock assembly for a takedown firearm and related methods are disclosed. The stock assembly has a buttstock assembly, and a forend assembly removably couplable to the buttstock assembly at a first location and a second location. When the forend assembly is coupled to the buttstock at the first location, the forend assembly is positioned to support a barrel of the firearm in a longitudinal firing position. When the forend assembly is coupled to the buttstock at the second location, the forend assembly is positioned to support the barrel at an angle relative to the longitudinal firing position.

Abstract: A firearm and related methods and components are disclosed. The firearm has a chassis, a stock portion coupled to the chassis, and a pair of interchangeable plates removably coupled to the chassis. Each of the pair of interchangeable plates is attachable to the chassis at a first location and a second location opposing the first location. A first one of the pair of interchangeable plates has a recess for receiving a portion of a bolt handle. A second one of the pair of interchangeable plates has a firearm tool interface.

Abstract: A lock system and related methods are disclosed. The lock mechanism has a lock plate configured to be positioned adjacent the distal side of a firearm floor plate. The lock plate has a base plate and a disengagement mechanism affixed to a proximal side of the base plate. The disengagement mechanism has a protrusion configured to extend into the passage of the floor plate when the floor plate and the lock plate abut one another. The protrusion has a first portion and a second portion. The first portion is shaped to extend into the passage of the floor plate. The second portion is shaped to extend through the passage of the floor plate and protrude from the proximal side of the floor plate.

Abstract: This disclosure describes systems, methods, and apparatus for a bipod having pivot and cant functionality built into a unified cant/pivot assembly, housing, and pivot block. Rotation of a locking knob under the housing can gradually increase or decrease friction of the cant and pivoting degrees of freedom. The legs can be stowed approximately 90° rotation from a deployed position, and locking and releasing of this rotation is made possible via depression of a button that also acts as a locking detent that directly interacts with and locks or releases the legs for rotation. In the stowed position, the button can be backdriven and thus the legs can be deployed without depressing the button. A pivot block can also be raised and rotated 180° to lock in a given pivot setting.

Abstract: A firearm suppressor cover assembly and method of protecting a user while firing a weapon are disclosed. The cover assembly has an insulating cover assembly, a one or more clamps or other firearm suppressor attachment means, one or more standoffs per clamp, and an optional heat shield. The standoffs are coupled to the one or more clamps and in contact with the insulating cover assembly thereby forming an air gap between the suppressor and the insulating cover assembly. The heat shield may be arranged within the air gap.

Abstract: A firearm accessory attachment system and method are disclosed. The system has a first body having a longitudinal length, a first protrusion coupled to and extending from the first body in a first direction, and a second protrusion coupled to and extending from the first body in the first direction as the first protrusion, the second protrusion is a first longitudinal distance from the first protrusion. The system also has a second body having a third protrusion coupled thereto, the third protrusion extending in the first direction. The second body is slidable relative to the first body. The system is movable between a locked configuration having a first width and an unlocked configuration having a second width, the second width less than the first width, the first and second widths defined by a direction transverse relative to the longitudinal length.

Abstract: A magazine assembly for a firearm and a related method are disclosed. The assembly has a magazine housing defining a track, and a follower assembly. The magazine housing is configured to constrain a cartridge as the cartridge is moved within the magazine assembly such that majority of a proximal surface area of the cartridge does not contact the magazine housing, and a distal tip of the cartridge does not contact the magazine housing.

Abstract: A firearm magazine assembly and a related method are disclosed. The follower has a top platform, a proximal end, a distal end, and at least one slider rail on a first side of the follower. At least a portion of the at least one slider rail is at a position that is between and remote from both the proximal end of the follower and the distal end of the follower. The housing is shaped to receive the follower. The housing has a first wall having a first recess for receiving the at least one slider rail, the first recess defined by opposing surfaces. At least a portion of the at least one slider rail is shaped to engage the two opposing surfaces to limit tilt of the follower.

Abstract: This disclosure describes systems, methods, and apparatus for a bipod having pivot and cant functionality built into a unified cant/pivot assembly, housing, and pivot block. Rotation of a locking knob under the housing can gradually increase or decrease friction of the cant and pivoting degrees of freedom. Sufficient loosening of the locking knob can allow a pivot block to be lifted from the housing and rotated 180°, and then retightened to lock in a given pivot position. Before this 180 rotation of the pivot block, the pivot block and hence the firearm is free to pivot up to 10°, or up to 20°, or up to 30°.

Abstract: The present disclosure describes a foldable firearm that collapses into a folded state under spring pressure. The foldable firearm may include a foldable grip assembly. The foldable grip assembly may include a foldable pistol grip, a foldable trigger assembly, a folding bar, and a foldable hand stop. The foldable grip assembly may fold into the top shell of the foldable firearm. The foldable firearm may also include an ambidextrous charging handle assembly that may include a bottom portion, a top portion, a guide bar, and two opposing charging handles. The charging handles may be pulled to unfold the foldable firearm, and/or butterflied such that pivoting one charging handle causes the other charging handle to pivot. The first-pivoted charging handle may then be pulled rearwards to unfold the firearm. The first-pivoted charging handle may then be pulled further rearwards to rack the slide of the foldable firearm.