Abstract: Some embodiments are directed to a shaped charge liner including an apex end and a base end and defining a main liner axis that passes through the apex and base ends, the liner being rotationally symmetric about the main liner axis wherein the liner has discrete rotational symmetry about the main liner axis.

Abstract: An accessory mounting interface for a firearm, and a related method, are disclosed. The interface has a firearm accessory, a first elongated fastener, and a second fastener rotationally mated to the first elongated fastener. The first elongated fastener has right-handed threading and is arranged through a through hole in the firearm accessory with a first end extending below first and second halves of a first slot protrusion of the firearm accessory. The second fastener has a length greater than a width, the length measured along a longitudinal axis of the second fastener, the second fastener having a plurality of straight edges. At least one of the plurality of straight edges prevents the second fastener from rotating further than a closed position when the at least one of the straight edges abuts a sidewall of an elongated slot in the firearm.

Abstract: A ballistic resistant panel can be configured to be quickly and easily installed in a vehicle door. The ballistic resistant panel can include a plurality of ballistic sheets arranged in a stack. The stack can have an outer perimeter sized to fit within a cavity of the vehicle door. The panel can include a cover disposed over the stack, and the cover can be sealed around a perimeter of the stack to form a waterproof barrier that prevents moisture from reaching and altering the performance of the ballistic sheets. At least one anti-wear strip can be adhered to an outer surface of the cover. The anti-wear strip can provide a low friction surface that protects the panel from damage caused by moving internal door components, such as moving window components that repeatedly rub against the panel.

Abstract: A magazine well unit and a method are disclosed. The magazine well unit may have an upper portion having a firearm interface; a lower portion; a proximal portion; and a distal portion. The distal portion may have a magazine well to removably receive a box magazine. The magazine well may have at least one fore stop and at least one aft stop, the at least one fore stop and the at least one aft stop shaped to prevent the box magazine from passing beyond the upper portion of the magazine well unit. At least one of the fore stop or the aft stop may have an upper portion region having a surface for engaging the firearm.

Abstract: A fast-attaching, self-aligning, easily adaptable firearm adapter. The novel adapter attaches to the barrel of a firearm while precisely aligning the barrel and adapter using a concentric constriction sleeve along the barrel and a barrel guide to funnel firearm muzzle. The device is adapted to attach to a wide range of barrel diameters via an easy to fit and inexpensive to manufacture fitment sleeve. Thus, the adapter can be manufactured in a single size and work with most firearms. In addition, the device attaches to the smooth section of barrel thereby eliminating the need for permanently modifying a firearm by threading the barrel.

Abstract: A firearm with manually operated bolt release includes a receiver defining a longitudinally-extending cavity, a barrel, and a bolt slideably mounted in the receiver for reciprocating axial movement between a forward closed breech position in battery with the barrel and a rearward open breech position. A recoil spring biases the bolt forward towards the closed breech position. A manually actuated bolt release is pivotably mounted in the firearm and movable between an engaged position and a disengaged position. The bolt release includes a locking portion configured to selectively engage a locking recess formed on the bolt for holding the bolt in the open breech position, and disengage the locking recess for releasing the bolt to reclose the breech. In one embodiment, the bolt may be automatically disengaged from the bolt release by retracting the bolt a second time.

Abstract: A wireless firearm system is disclosed. The wireless firearm system includes a device computer processor operable to execute a set of computer-readable instructions. Attached to the device computer process is a device memory operable to store the set of computer-readable instructions. The device memory is operable to receive a first set of firearm values from a first firearm transmitter, receive a firing sequence command, and determine a second set of firearm values based at least in part on the firing sequence command. The device memory can determine the first set of firearm values is less than the second set of firearm values and communicate the firing sequence command to a firearm memory.

Abstract: 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.

Abstract: A quick-attach-and-detach mount for removably securing an accessory on a rail of a firearm comprises a clamp carried by a portion of the accessory. The clamp includes a pair of generally opposing surfaces. An opposing jaw is formed on one of the generally opposing surfaces of the clamp, the fixed jaw being configured to engage an undercut on the rail. At least one movable jaw is secured in a recess in another of the generally opposing surfaces of the clamp in opposition to the fixed jaw, the movable jaw being configured to engage an undercut on an opposite side of the rail from the fixed jaw. A biasing member is disposed in the recess to urge the movable jaw into engagement with an undercut on the rail opposite that engaged by the fixed jaw, wherein the mount and accessory are attached and detached from the rail and firearm by manipulating the accessory and clamp to compress the biasing member and permit the movable jaw to move in and out of engagement with the rail.

Abstract: An avalanche control device includes a detonation initiator unit and a bio-degradable linear bag. The initiator unit is elongated and includes an ignition end, an inflation end, and a stepped transition zone in between that gets progressively greater in diameter as it extends from the ignition end towards the inflation end. The inflatable bag is adapted for connection to the inflation end of the initiator unit. The design of initiator unit is fixed and reusable, while the bag dimensions can be tailored to the desired blast strength for the end user, in terms of length, diameter, and mixture ratio.

Abstract: The application discloses an optic mount assembly for coupling an optic mount to a side rail of a firearm. The optic mount assembly includes a clamping bar including a body and protrusions extending from opposing side surfaces of the body. The optic mount assembly includes a lever pivotally coupled to the clamping bar. The optic mount assembly includes a fastener coupling the lever to the clamping bar. The clamping bar is configured to be at least partially inserted into and engaged with a cutout of the side rail, and configured to be inserted into a cutout in an optic mount.

Abstract: A folding ballistic shield is provided that has two panels connected along a vertical line that open to less than 180 degrees via an offset coupling mechanism such that the panels also overlap slightly to prevent any gap or ballistically weak area. A pair of grip handles and arm braces or supports on each panel allow users to more easily support the shield with either his or her left or right hand/arm.

Abstract: In some embodiments, a fire control mechanism comprises a trigger arranged to pivot about an axis and a disconnector arranged to pivot about the axis with respect to the trigger. The disconnector comprises a first stop and a second stop. A distance between the axis and the second stop is greater than a distance between the axis and the first stop. The disconnector comprises a first orientation and a second orientation, and a disconnector spring is arranged to bias the disconnector to the first orientation. The first stop contacts a first interfering surface in the first orientation and the second stop contacts a second interfering surface in the second orientation.

Abstract: A gun stability plate assembly includes a widened body that attaches to the fore-end of a stock or chassis of a gun by means of a clamping device. The assembly includes a main body, a clamp assembly, and a track. The clamp assembly is in communication with the main body and is configured to translate adjacent an upper surface of the main body. A rotating knob regulates operation of the clamp by rotating about an axis. The axis of the knob is coplanar with a central plane of the main body. The track is formed into the main body and configured to seat the clamp. The track is recessed into the main body. An accessory aperture is located within the main body and configured to permit attachment of one or more accessories.

Abstract: An ammunition loading system for loading ammunition into a primary magazine in an automatic cannon includes at least one secondary magazine arranged in an ammunition store beneath the primary magazine of the automatic cannon, a hoisting device for transporting the aforementioned at least one secondary magazine from the ammunition store to the primary magazine, a docking and transfer mechanism for the docking of the secondary magazine with the primary magazine and for the transfer of ammunition between the secondary magazine and the primary magazine, as well as a common drive arrangement for synchronous driving of the secondary magazine and the primary magazine during the transfer of ammunition. A method for the aforementioned ammunition loading system is also provided.

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: A sight mount for firearms includes a pair of sight rings each including a top ring half joined to a base ring half at interfacing surfaces. The interfacing surfaces define a first split and a second split, each disposed along horizontal planes that are vertically offset from one another. The pair of sight rings define an internal bore for supporting a riflescope. The offset split interface allows a plurality of planar attachment surfaces to be integrated for ambidextrous mounting of accessories.

Abstract: A projectile including a body having a tip and a tail, the body also having an internal cavity. There is at least one plume aperture connected to the internal cavity, the plume aperture being positioned proximate to the tip of the body.

Abstract: The invention relates to a ballistic layer for a ballistic multilayer arrangement (1), wherein it is formed by an absorption layer (2, 2a, 2b) that entirely or largely comprises expanded glass (21) and by a ballistic multilayer arrangement (1) with an impact side (A) and a back side (B), wherein at least one of the layers is formed by such an absorption layer (2, 2a, 2b) that entirely or largely comprises expanded glass (21).

Abstract: The invention provides a quick release mechanism that allows two component parts to be connected to and disconnected from each other easily. In particular the invention provides a clip on and off system that allows two components to be connected together at the push of a button. The invention is particularly intended as a quick release system for the attachment of a firearm to a bipod.