A firearm includes a lower receiver storing an electrical power source and an upper receiver attached to the lower receiver. A pivot pin device provides a mechanical pivot point between the upper and lower receivers and a transfer of electrical power from the electrical power source in the lower receiver to at least one accessory rail attached to the upper receiver. The at least one accessory rail has electrical contacts that engage corresponding contacts on an electronic accessory device to supply the electrical power to the electronic accessory device.

A firearm includes a lower receiver storing an electrical power source and an upper receiver attached to the lower receiver. A pivot pin device provides a mechanical pivot point between the upper and lower receivers and a transfer of electrical power from the electrical power source in the lower receiver to at least one accessory rail attached to the upper receiver. The at least one accessory rail has electrical contacts that engage corresponding contacts on an electronic accessory device to supply the electrical power to the electronic accessory device.

An assembly includes a forward unit including a mounting portion for mounting thereon a firearm, the forward unit defining a projectile shooting axis, and a rearward unit coupled to the forward unit. The rearward unit includes a retractable buttstock that has a retracted position and an extended position. In the extended position the rearward unit is pivotable with respect to the forward unit about a pivot axis which is tilted relative to the projectile shooting axis.

An assembly includes a forward unit including a mounting portion for mounting thereon a firearm, the forward unit defining a projectile shooting axis, and a rearward unit coupled to the forward unit. The rearward unit includes a retractable buttstock that has a retracted position and an extended position. In the extended position the rearward unit is pivotable with respect to the forward unit about a pivot axis which is tilted relative to the projectile shooting axis.

A portable camera may be activated in response to the activity of a firearm. Furthermore, an individual who discharged a firearm may be identified. Furthermore, information related to the firing of a firearm may be recorded, assessed, identified and transmitted. Furthermore, the status of an implement at a mount may be monitored. Furthermore, a charging device for delivering electrical power to components of a firearm may be used. A communications channel may be established between a firearm telematics sensor and a video camera, optionally by means of intermediary devices. A communications channel may be established between a mount (e.g., holster) telematics device and local and/or remote monitoring service components, optionally by means of intermediary devices. When the telematics sensor detects that its associated firearm has been removed from a holster, is in motion, or is being discharged, the telematics sensor may signal the video camera to initiate recording.

A portable camera may be activated in response to the activity of a firearm. Furthermore, an individual who discharged a firearm may be identified. Furthermore, information related to the firing of a firearm may be recorded, assessed, identified and transmitted. Furthermore, the status of an implement at a mount may be monitored. Furthermore, a charging device for delivering electrical power to components of a firearm may be used. A communications channel may be established between a firearm telematics sensor and a video camera, optionally by means of intermediary devices. A communications channel may be established between a mount (e.g., holster) telematics device and local and/or remote monitoring service components, optionally by means of intermediary devices. When the telematics sensor detects that its associated firearm has been removed from a holster, is in motion, or is being discharged, the telematics sensor may signal the video camera to initiate recording.

A device for quickly replacing the magazine of a handheld automatic small arm having a bullpup configuration relates to military equipment and is intended to maximally reduce the time for replacinga spent magazine and to increase the amount of ammunition that can be carried. Once a Magazine is spent, the bolt comes to rest ona bolt stop. In an embodiment involving a bolt stop the shooter removes the active magazine using a control key. Upon return the control key releases a pivoting tray that is held by a latch spring and the pivoting tray moves into a bottom position. The shooter takes hold of the part of a spare magazine which protrudes from the butt and moves the spare magazine into a magazine opening. The bolt stop releases the bolt, which under the effect of a bolt spring advances grips a round from the active magazine and rams it into the chamber. Firing can be continued immediately.

Presented are a firearm attachment and a method. An exemplary firearm attachment includes a gunstock comprising a cavity for attachment to a barrel, a handgrip port including a mount, a buttstock port, and a magazine port, the magazine port located on the gunstock to align with a magazine, the mount operable to slideably move and be affixed along a longitudinal axis of the gunstock. The firearm attachment further includes a handgrip, the handgrip removeably attached to the mount, the handgrip able to rotate relative to the gunstock to a plurality of locations, wherein the handgrip can be rotatably fixed at each one of the plurality of locations. The firearm attachment also includes a buttstock and a forearm grip.

A triple-barrel firearm includes three barrels in a triangular array mounted on a rear stock. The rear stock is connected to the firearm rearward of the firearm's trigger assembly by a hinge assembly. The hinge assembly in turn, includes a locking member and a manually-activatable release member whereby the rear stock can be pivoted between a first “fire ready” position distal with respect to the trigger assembly and a second “storage” position proximal with respect to the trigger assembly. The locking member automatically locks the rear stock in the first position or the second position. The release member unlocks the locking member upon manual activation thereof to enable pivoting of the rear stock from the first position to the second position or vice versa. The rear stock further includes an opening for a retainer for firearm accessories.

A triple-barrel firearm includes three barrels in a triangular array mounted on a rear stock. The rear stock is connected to the firearm rearward of the firearm's trigger assembly by a hinge assembly. The hinge assembly in turn, includes a locking member and a manually-activatable release member whereby the rear stock can be pivoted between a first “fire ready” position distal with respect to the trigger assembly and a second “storage” position proximal with respect to the trigger assembly. The locking member automatically locks the rear stock in the first position or the second position. The release member unlocks the locking member upon manual activation thereof to enable pivoting of the rear stock from the first position to the second position or vice versa. The rear stock further includes an opening for a retainer for firearm accessories.