Abstract: A follower for a firearm magazine and a method are disclosed. The follower platform is shaped to support a cartridge and has a top surface, a bottom surface opposing the top surface. The top surface defines at least one plane. A normal of the bottom surface defines a vertical axis of the follower. The front end has an interior surface and an exterior surface for engaging a magazine body. The rear end has an interior surface and an exterior surface for engaging the magazine body. A spacer is positioned on the platform. The bottom surface, the front end, and the rear end define a spring receiving space. The spring receiving space is shaped to limit an upper portion of the spring to vertical compression when the upper portion of the spring is compressed into the spring receiving space.

Abstract: An accessory mounting interface and method are disclosed. The interface has an upper portion having a firearm accessory and at least one through hole extending from a first surface to a second surface of the upper portion, the upper portion having a first post portion with a first side surface and a first flange. A first elongated fastener is arranged through the through hole and has a first end extending below the second surface of the upper portion. The interface also has a second post portion that is movable between a first configuration defining a first transverse distance between the first and second side surfaces and a second configuration defining a second transverse distance between the first and second side surfaces, the first transverse distance greater than the second transverse distance. The first flange substantially opposes the second flange when the second post portion is in the first configuration.

Abstract: The present disclosure provides ammunition magazine casing and follower systems. The magazine casing may comprise a pair of spines running along a length of an interior rear wall of the magazine casing, the spines being raised in relation to other portions of the interior rear wall and stopping at a point in the magazine casing where an exterior geometry of the magazine casing changes from substantially curved to substantially straight.

Abstract: A gunsmithing block is disclosed. The gunsmithing block has a first end for interfacing with a vice, and a second end shaped to interface with an upper receiver assembly of a firearm, the upper receiver assembly having an upper receiver, a bolt carrier without a bolt, and a barrel extension. The second end has an upper receiver mating portion shaped to interface with an interior region of the upper receiver and an interior region of the barrel extension. Methods of using and making a gunsmithing block are also disclosed.

Abstract: A stock for a firearm is disclosed. The stock has a length of pull (LOP) adjustment mechanism. The LOP adjustment mechanism is biased towards an engaged configuration and is movable to a disengaged configuration. A locating member protrudes into a stock mounting space and a first arm is in an engagement position when the LOP adjustment mechanism is in the engaged configuration. The locating member is translated such that the locating member does not protrude into the mounting space and the first arm is pivoted into a disengagement position when the LOP adjustment mechanism is in the disengaged configuration.

Abstract: A firearm accessory attachment system and method are disclosed. The system has a first body having a first flanged protrusion coupled to the first body. The first flanged protrusion extends downward from the first body. A second flanged protrusion is coupled to and extends downward from the first body. The second flanged protrusion is positioned a first longitudinal distance from the first flanged protrusion. The system has a second body having a third flanged protrusion. The third flanged protrusion extends downward. The second body is movably coupled to the first body and slidable in a transverse direction. The system has an actuator configured to move the system between a locked configuration having a first envelope flange width defined by the first and third flanges and an unlocked configuration having a second envelope flange width. The second envelope flange width is less than the first envelope flange width.

Abstract: The present invention is an ammunition magazine, preferably made of a reinforced polymer, utilizing a structurally enhancing ridge, angular guide rails and a follower made to interface with said guide rails to reduce wobble. The preferred embodiment also features a protective cover that distributes forces from the spring to more structurally sound areas of the magazine, thus reducing feed end splay, and an ammunition indication system comprised of at least one window and a noticeable marker on the follower spring. The follower and magazine casing are also designed to interface to prevent the follower from popping out of the feed end and the floor plate of the magazine utilizes a locking plate and sliding relationship between the floor plate, locking plate and magazine to secure the floor plate onto the magazine casing. The cover features built in tools for, among other things, unloading and disassembling the magazine.

Abstract: A stock and related methods for a firearm are disclosed. An exemplary stock includes a distal portion for interfacing with a firearm, the distal portion having one of a lock catch or a lock and one of a detent or a detent notch distinct from the one of a lock catch or a lock. The exemplary stock further includes a proximal portion, the proximal portion having the other one of a lock catch or a lock and the other one of a detent or a detent notch. The exemplary stock has a folded configuration and an unfolded configuration. The exemplary lock is shaped to engage the lock catch to selectively maintain the stock in the unfolded configuration. The exemplary detent is shaped to engage the detent notch to selectively maintain the stock in the folded configuration.

Abstract: A padded strap is provided, which comprises a unitary strap member forming a tube and an inserted pad. The unitary strap member has at least two sections, at least one of the sections configured to form a pad casing section which can retain the inserted pad, and the another section comprising a substantially flat section abutting the pad casing section. The area between the pad casing section and the substantially flat section comprises a hollow, tapering transition area. The unitary strap member comprises at least one sealable opening at an end of the unitary strap member. The inserted pad is inserted through the sealable opening and retained in the pad casing section, and the pad is comprised of at least one outer layer of resilient, low-friction material and a cushioning layer.

Abstract: A system and method for a user's appendages when firing a weapon is described. One embodiment includes a cover kit for a firearm handguard. The kit has a base and an insert. The base has a longitudinal axis, an upright axis, a transverse axis, a socket, an exterior surface, and an interior surface. The insert has an insert body and a plug. The socket has a movable engagement prong shaped to engage a wall surface of a handguard slot. The plug has a prong engagement surface shaped to engage the engagement prong. The plug is shaped to apply a force on the engagement prong such that a distal portion of the engagement prong is flexed more than a proximal portion of the engagement prong.

Abstract: A system and method for using a firearm magazine are described. One example includes a firearm magazine assembly. The assembly has a housing defining a cartridge track, the housing having a distal end having feed lips for feeding cartridges to a firearm and a proximal end. The assembly also has a follower assembly having a follower and a spring. The follower has a proximal side and a distal side and is movable between a compressed position and an extended position. The follower engages the housing in the extended position without biasing the feed lips away from each other, whereby the follower prevents creep of the distal end of the housing when the follower is in the extended position.

Abstract: A follower for a firearm magazine is provided. In some embodiments, the follower has: a cartridge platform coupling a first wall to a second wall. The first wall, the second wall, and the platform define a receiving space for receiving at least a portion of a magazine spring. At least one of the first wall or the second wall has a nonlinear end profile shaped to translate a lateral spring force into a longitudinal spring force.

Abstract: This disclosure describes systems, methods, and apparatus for a barrel support for a for a firearm stock. In one example, the barrel support has an elongate frame with a longitudinal axis extending between a fore portion and an aft portion, a first concave barrel recess shaped to support a first barrel, the first concave barrel recess positioned on a first side of the elongate frame. The exemplary barrel support also has a second concave barrel recess shaped to support a second barrel, the second concave barrel recess positioned on a second side of the elongate frame. In this example the first barrel is a tapered barrel, and the second barrel is a straight barrel.