Firearm associated electronic devices are provided. In one aspect a firearm associated device has a housing having a holding area and an opening through which a removable component may be positioned in the holding area, a door movable relative to the housing and having a door latch that moves along a path as the door moves and a housing latch movable between a first latch position where the housing latch is not in the path to a second latch position where the housing latch blocks movement of the door latch from a first range of positions where the door prevents the removable component from passing through the opening to a second range of positions where the door does not prevent the removable component from passing through the opening. A housing latch biasing member biases the housing latch into the second latch position. When the door latch is in the first range of positions and the housing latch is in the second latch position the door latch is movable along the path but is blocked by the housing latch from passing to the second range of positions.

Firearm associated electronic devices are provided. In one aspect a firearm associated device has a housing having a holding area and an opening through which a removable component may be positioned in the holding area, a door movable relative to the housing and having a door latch that moves along a path as the door moves and a housing latch movable between a first latch position where the housing latch is not in the path to a second latch position where the housing latch blocks movement of the door latch from a first range of positions where the door prevents the removable component from passing through the opening to a second range of positions where the door does not prevent the removable component from passing through the opening. A housing latch biasing member biases the housing latch into the second latch position. When the door latch is in the first range of positions and the housing latch is in the second latch position the door latch is movable along the path but is blocked by the housing latch from passing to the second range of positions.

A firearm is described herein. The firearm comprises a receiver assembly adapted to receive a cartridge, a bolt assembly including a firing device operable to fire the cartridge, a barrel adapted to receive the projectile after the cartridge is fired, and a gas assembly including a gas tube. The receiver assembly includes an upper receiver portion, a lower receiver portion, and an upper receiver cover. The upper receiver portion defines a longitudinal axis, and an indexing slot operable to receive the gas tube. The upper receiver portion includes at least one integrated exterior track extending generally parallel to the longitudinal axis adapted to slidably couple with the upper receiver cover and a plurality of interior tracks extending generally parallel to the longitudinal axis adapted to slidably couple with the bolt assembly. The upper and lower receiver portions are pivotally connected to one another.

A firearm is described herein. The firearm comprises a receiver assembly adapted to receive a cartridge, a bolt assembly including a firing device operable to fire the cartridge, a barrel adapted to receive the projectile after the cartridge is fired, and a gas assembly including a gas tube. The receiver assembly includes an upper receiver portion, a lower receiver portion, and an upper receiver cover. The upper receiver portion defines a longitudinal axis, and an indexing slot operable to receive the gas tube. The upper receiver portion includes at least one integrated exterior track extending generally parallel to the longitudinal axis adapted to slidably couple with the upper receiver cover and a plurality of interior tracks extending generally parallel to the longitudinal axis adapted to slidably couple with the bolt assembly. The upper and lower receiver portions are pivotally connected to one another.

A fire control group has a receiver having opposed sidewalls defining a space configured to receive a fire control group, the opposed sidewalls each defining a pivot pin aperture, the pivot pin apertures being registered with each other, a fire control group including a trigger received in the space, the fire control group defining a transverse pivot pin passage configured to be registered with the pivot pin apertures of the receiver, the fire control group including a pivoting operational element, the fire control group including a pivot pin supporting the pivoting operational element and received in the transverse pivot pin passage and the pivot pin apertures, the firearm having a hand grip aft of the trigger and defining a screw aperture, and a grip screw engaging the hand grip and engaging the fire control group. The grip screw may occupy a medial plane of the firearm.

The present disclosure describes devices and methods for disassembly and/or reassembly of firearms. The devices can include mechanisms such as a crank mechanism, guide rails, and stop plate to enable simplified disassembly and reassembly of a firearm.

The present disclosure describes devices and methods for disassembly and/or reassembly of firearms. The devices can include mechanisms such as a crank mechanism, guide rails, and stop plate to enable simplified disassembly and reassembly of a firearm.

A mechanically coupled buffer and carrier for a firearm includes an interlocking feature on each of the buffer and carrier such that the buffer and carrier are mechanically coupled to prevent carrier tilt and buffer bounce. The interlocking features are brought together to mechanically couple the buffer and carrier during the assembly process of the firearm as the upper receiver is mounted to the lower receiver.

A magazine for a firearm comprises a tubular magazine body defining a cavity for holding cartridges, a spring, and a follower biased by the spring for dispensing cartridges from the magazine. A spring base disposed on the body includes a cantilevered resiliently deformable spring arm supporting the spring in one embodiment. The base is held in place by the floor plate. Sliding the floor plate onto the magazine body engages an inclined ramp of the floor plate with spring arm which automatically moves the spring arm from an undeflected to deflected position. When the floor plate is fully coupled to the magazine tube such that the spring arm clears the ramp, the spring arm snaps back to the undeflected position and locks the floor plate in place on the tubular body via interlocked retention features without use of tools.

A quick-release take-down assembly for a weapon, including a quick-release, spring-loaded cam lever or handle, or a set of clips, that enables a handler to quickly and efficiently release the upper assembly from the lower assembly to access the bolt, carrier, and other components of the weapon for cleaning and other purposes. The quick-release system eliminates the need for standard, sliding take-down pins that can become stuck, require detent pins/springs in order to stay in place, require tools, and/or become misaligned.