Abstract: Disclosed herein are alignment features for scopes, such as alignment rings for telescopic sights. For example, a scope can includes a proximal end having an interior surface. The proximal end is that which a user aligns his or her eye in order to visualize a target. The scope may also include an alignment ring on the interior surface of the proximal end. The alignment ring assists a user in determining whether his or her eye is properly aligned with a longitudinal axis of the scope. With correct eye alignment, the alignment ring is not visible. With incorrect eye alignment, at least a portion of the alignment ring is visible, thus ensuring accurate sighting.

Abstract: A charging handle that forms a seal against the receiver to prevent the escape of discharge gas from the interface between the charging handle and the receiver.

Abstract: A firearm is disclosed which advantageously allows for firing from two different magazines, one in a magazine well ahead of a trigger, and a second magazine held in a handle of a pistol grip of the firearm. This allows for both sub-machine gun and pistol firing configurations, allowing for increased firing capacity and allowing the firearm to continuously fire while reloading.

Abstract: A dual magazine release system for a firearm has a housing attachable to a firearm. The housing includes first and second magazine holders, the first magazine holder positioned to retain a first magazine to feed ammunition to the firearm and the second magazine holder positioned in front of a trigger of the firearm and configured to retain a spare second magazine. A magazine retaining and release system is coupled to the housing and configured to retain the first magazine in the first magazine holder and to retain the second magazine in the second magazine holder and to selectively release the first magazine or the second magazine independently from one another or to substantially simultaneously release the first and second magazines from the first and second magazine holders, respectively, upon actuation of the magazine retaining and release system by a user.

Abstract: A safety selector comprises a first hub portion, a second hub portion, and a cam portion connecting the first hub portion with the second hub portion. The first hub portion is generally cylindrical in shape, having opposing faces and an longitudinal surface extending therebetween. Further, the first hub portion is segmented in it opposing faces, creating a first plane in the longitudinal surface. The first hub portion further comprises a pair of spaced apart detent sockets in the longitudinal surface face, a connecting groove extending between the detent sockets, and a detent notch in an outer one of the circular faces exposing one of the detent sockets. The cam portion comprises a recessed face and a cam face. The first plane is substantially parallel with the recessed face.

Abstract: A pistol-to-rifle conversion kit (100) includes a rifle body (26) that includes a lower receiver (28), which includes a grip mounting portion (30), which is rearwardly adjacent to a trigger guard (32), which is rearwardly adjacent to a magazine well receiving portion (34). An auxiliary trigger (46) is sliding mounted in the rifle body (26) and includes an elongate member (48) and a forward trigger interface member (50), which extends from a forward portion of the elongate member (48) and which is configured to interface with a trigger (13) of a pistol (14) mounted in the rifle body (26), and a trigger member (56) which extends from the elongate member (48) for directly contacting a shooter's finger.

Abstract: A receiver and a method for manufacturing it are disclosed. The receiver contains an assembly pivotally coupled with the lower receiver, a buttstock coupled with the assembly, wherein the assembly is configured to move from a locked position to a folded position and back to the locked position.

Abstract: A rifle having a receiver alignment system includes an upper receiver and a lower receiver configured to engage with each other in an assembled configuration by aligning and pressing an exterior portion of the upper receiver into an interior portion of the lower receiver. A cavity is defined within the interior portion of the lower receiver configured to receive the upper receiver. A lug positioned on the upper receiver defines an alignment groove formed on a lower surface of the lug. A plunger pin is provided in a hole defined within the interior portion of the lower receiver. The plunger pin is configured to engage with the alignment groove and generate a spring-loaded tension when the upper receiver and the lower receiver are engaged in an assembled configuration.

Abstract: A visual impairment device includes a power supply, an intense light source having two or more beams of intense light with different peak wavelengths and a wavelength bandwidth less than 50 nm, a modulator and a control circuit. The modulator operates to modulates the two or more beams of intense light to produce a spatial array such that at least one of the beams used to produce the spatial array has the requisite irradiance to cause visual impairment. In some examples, the beams of intense light are laser beams. Also included are methods of using the device to cause visual impairment of an intruder who enters a visual impairment zone created by said device.

Abstract: Provided is a hinged firearm receiver configured to operate with an AR-pattern Bolt carrier group, buffer, buffer spring, and buffer tube. The firearm upper receiver has an integral hinge that connects to a rear receiver body and provides an AR-pattern firearm the ability to have a folding stock to reduce length for storage or transportation purposes.

Abstract: Systems for automatedly delivering explosives with variable densities are disclosed herein. Methods of automatedly delivering explosives with variable densities are disclosed herein. Methods of determining an emulsion explosive density profile are disclosed herein.

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: Firearms with charging handle slot covers have a receiver defining a passage receiving a reciprocating bolt assembly, the receiver having a wall defining an elongated slot, a handle external to the receiver and having a shank portion extending through the slot and an inner portion connected to the bolt assembly, a slot cover plate connected to the receiver and movable between a closed position at least partly covering the elongated slot and an open position at least partly exposing the elongated slot, and a cover element overlaying at least a portion of the slot cover plate. The slot cover plate may be spring biased to the closed position. The slot cover plate may be an elongated body with opposed ends independently movable with respect to each other. The slot cover plate may be configured to shift to cover the elongated slot away from the shank.

Abstract: Firearms with ambidextrous bolt hold-open have a receiver defining a magazine well configured to receive an ammunition magazine having a follower that is spring biased toward an open end, the receiver defining a passage receiving a bolt assembly operable to reciprocate between a forward battery position and a rear retracted position, the bolt assembly being operable to strip a cartridge from the magazine upon movement from the rear retracted position to the forward battery position, a bolt latch movable between a latched position in which the bolt latch prevents movement of the bolt assembly from the retracted position to the battery position, and an unlatched position in which the bolt latch permits movement of the bolt assembly from the retracted position to the battery position, the bolt latch being responsive to the magazine having an elevated follower without ammunition to move to the latched position.

Abstract: A compact action for a firearm including an upper receiver housing incorporating a barrel. A bolt and supporting carrier is positioned within the receiver housing so that the bolt is engaged to a rear receiver end of the barrel in a cartridge chambering position. Guide rods are supported within the housing above the barrel and extend in parallel to a rear located end plate. The carrier includes a carrier key supported by and displaceable along the guide rods between the barrel and a rearward bumper component. A gas tube extends from a forward located gas block overlaying a gas discharge aperture in the barrel to a gas key for actuating the carrier rearwardly following discharge of a ballistic from the barrel. A charging handle is manually displaceable along a slot in the housing for actuating an interior slider component, in turn actuating the carrier key to cycle the carrier and bolt.

Abstract: A deck landing system for aircrafts, in particular rotating wing aircrafts, apt to implement a hook between the aircraft and the deck of a ship or of a floating platform, the deck being equipped with a target grid plate, it does not require the use of hydraulic systems and it comprises: a telescopic actuator (1) with a harpoon (3) having, at its own distal end, hooking grippers (7); and a control unit (9) which actuates said telescopic actuator (1), wherein the telescopic actuator (1) comprises a linear electromechanical actuator (8) having: a main battery (13) fed through a unit (12) for converting and conditioning the energy and connected to said telescopic actuator (1); and a device (10) for recovering and releasing the kinetic energy generated by the waves with the aircraft locked on said deck, is of the type acting with super-capacitors, which feeds said main battery (13).

Abstract: A conducted electrical weapon (“CEW”) impedes locomotion of a human target by providing a stimulus signal through the target via one or more electrodes. A propulsion system provides a force that launches the one or more electrodes toward the target to deliver the stimulus signal. The electrodes may be mechanically and electrically coupled to a deployment unit by a filament. An electrode may cooperate with a winding machine to wind the filament into a winding. The winding may be positioned inside the body of the electrode for deployment during launch.

Abstract: A magazine for a firearm with a magazine well and a reciprocating bolt. A body of the magazine is engaged within the well and has a top, interconnected front, sides and rear walls, and a bottom defining a cartridge holding interior. A spring supported within the interior contacts the bottom and upwardly biases a follower positioned atop the spring toward an opening in the top, through which the cartridges are loaded into the magazine. A feed tower integrated into the top supports a pair of feed lips positioned along opposed edges defining the opening. An aperture is formed in the top rearward of the feed tower. A rear upward projection of the follower aligns with the aperture and, following discharge of a final cartridge, elevates above the top in order to actuate a separate bolt catch or bolt hold open adaptor to prevent a forward returning motion of the bolt.

Abstract: A method and a system for inductively programming a fuze including at least one target coil arranged in a projectile by a fuze setter including at least one setter coil, the method including i) conveying at least one of a projectile or a fuze setter by an actuator to bring the at least one target coil and the at least one setter coil in an inductive coupling position, ii) programming the fuze by transferring predetermined fuzing data from the at least one setter coil to the at least one target coil, iii) optionally transferring fuzing data from the at least one target coil to the at least one setter coil to confirm correct programming of the fuze has been performed, and iv) retracting at least one of the fuze setter or projectile from the inductive coupling position when the transfer of fuzing data has been completed.

Abstract: A firearm including a barrel, receiver, indirect gas system and an adjustable gas block designed to interface with the indirect gas system is provided. Four indexable positions of adjustment are provided for on the adjustable gas block. Positions of adjustment are selected based on the use of a silencer, use of under-powered ammunition, the presence of un-burnt powder and debris in the host firearms operating system, or if the weapon is being fired under “ideal” circumstances. The provided gas block is designed to function with an indirect gas operating system. Excess gas from the operating system is not vented from the gas block thereby generating excess flash and sound. No tool is required to manipulate the adjustment mechanism of the gas.