Abstract: Armor for lightweight ballistic protection is made up of composite tiles which can be assembled into modules. The modules can be assembled into panels and can be mounted on vehicles and aircraft and on the walls of shelters. The tiles have core layer(s) of non-homogeneous materials provided by particles of grit distributed in a plastic, preferably rigid polymeric matrix, and which are faced by a layer of high modulus stiff material such as ceramic. The tiles are preferrably backed by elastomeric material and may have sheets of composite material between the elastomeric layer and the non-homogenous core layer. The tiles may be stacked, forming modules and the modules assembled in rows to form panels. An incoming object causes the facing layer to distribute the impact force over a large area of the non-homogeneous grit/polymeric core layer which fractures and absorbs the impact and shock waves, both the compressive direct wave and the tensile wave reflected from the back interface.

Abstract: A shooting controller of a paintball gun includes a mechanical shooting apparatus, an electric shooting apparatus, a pneumatic apparatus, and a switching apparatus. Operating the switching apparatus may switch the paintball gun between a mechanical shooting mode and an electric shooting mode. In the mechanical shooting mode, the mechanical shooting apparatus drives the pneumatic apparatus to shoot a paintball when a trigger is pulled. In the electric shooting mode, the electric shooting apparatus drives the pneumatic apparatus to shoot a paintball when a trigger is pulled.

Abstract: A visual aid device is provided for an elongate item of equipment intended, in use, to be launched or to launch a projectile at a target region, whereby a user performs an aiming process with the item of equipment by looking along the length thereof from a proximal end to its opposing distal end and directing the distal end in respect of the target region. The visual aid device includes a contrasting region or member located on the item of equipment nearer to the distal end than the proximal end thereof, and being positioned thereon and configured such that it is only fully visible in the peripheral vision of one of the user's eyes during the aiming process.

Abstract: A handguard assembly system for a firearm is disclosed. The system includes a handguard with an elongate perforated structure extending between a first end and a second end, where the handguard defines a handguard connector on the first end. An interfacing connector attaches to the handguard connector when the handguard is installed on the firearm. When installed on the firearm, the handguard extends over the barrel without directly contacting the barrel, and attaches to the firearm via the interfacing connector and an upper receiver connector on the firearm upper receiver.

Abstract: A high pressure air cylinder-nozzle assembly includes a cylinder frame body, a piston assembly including a piston base member and a nozzle, the piston base member being configured to move along an axis in the cylinder frame body relative to the nozzle in at least one stage of multi-stage piston assembly movements between forward and back positions, and simultaneously with the nozzle in at least another stage of the multi-stage piston assembly movements, and a solenoid valve to direct air to the piston base member to move the piston base member between the forward and back positions.

Abstract: An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearm's gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pin's annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end. The extractor recess is constructed so that the face of the bolt is round and the adjacent lugs fully supported. The extractor engages approximately 17% more of a seated ammunition cartridge's rim as compared to the prior art AR15/M16 extractor. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

Abstract: A suppressed muzzle brake for automatic and semi-automatic weapons provides mitigation of recoil, muzzle climb and increased sound pressure levels while overcoming the deleterious effect of increased blast overpressure on the shooter. The suppressed muzzle brake includes a plurality of suppressor baffles for providing quick blowdown of the weapon and some muzzle brake function, a baffle brake which redirects the propellant gas in a direction and manner so as not to increase blast overpressure to unsuitable levels. In addition, openings in a can of the suppressed muzzle brake provide a compensator effect by inducing a downward force on the suppressed muzzle brake.

Abstract: A fixed magazine in compliance with new firearms laws that enables citizens to legally own and effectively operate a firearm, such as an AR-15. The fixed magazine allows a user to easily load ammunition through a side of the fixed magazine without removing the magazine from the firearm, disassembling the action, or using tools. The fixed magazine includes: an extension portion configured to contain a stack of cartridges, and an attachable blocking tab for blocking removal of the ammunition magazine from the magazine well, the attachable blocking tab being attached after insertion of the ammunition magazine into the magazine well, and before re-engaging the upper receiver with the lower receiver. The fixed magazine also includes a cartridge-loading portion having a side opening, with a cover configured to alternately cover or reveal the opening, and a follower compartment including: a finger-pull slot with a bottom hook for locking the follower.

Abstract: A firearm has a battery-operated biometric scanning device secured along an interior side edge of the firearm grip. The biometric scanning device is configured with a microprocessor which disables the trigger mechanism of the firearm when an invalid fingerprint is scanned. The device has an integrated positioning tracking system.

Abstract: A weapon which has a modular design. The weapon is subdivided into weapon-specific modular assemblies which are designed as carrier units of the components. The modular assemblies include a weapon housing into which a breech system of the weapon and a striking mechanism is provided, a weapon cradle that connects with the weapon housing, and a weapon barrel module. The modular assemblies are connected to each other by rails and guides, by binders and holders, by pins, or by bolts and quick release fasteners.

Abstract: Provided is an apparatus, system, and method for improved control of trigger systems for semiautomatic firearms, which may include a timed locking mechanism incorporated in the trigger system that locks the trigger in the rearward or pulled position after the trigger is pulled and the action of the firearm is cycling or otherwise out-of-battery. Such a mechanism ensures that the necessary steps occur in the proper sequence in the trigger mechanism, preventing unexpected fires, misfires, and jams. Such trigger locking mechanisms have applicability to dual-mode trigger systems as well as semiautomatic firearms generally, and tend to prevent the ability to bump-fire the firearm. Such trigger locking mechanisms may also provide a tactile signal through the user's trigger finger indicating that the firearm is empty by locking the trigger in the rearward position after the firearm fires its last round and the carrier moves and remains in a rearward position.

Abstract: A system includes a ballistic shield having a strike face and an opposing safe face. A thickness of the ballistic shield extends from the strike face to the safe face. The system can further include a base plate having a shield side and an opposing body side. The base plate can be connected to the ballistic shield. The base plate is not directly connected to either the strike face or the safe face by a fastener that traverses the thickness of the ballistic shield.

Abstract: A process that uses a lodged projectile removal charge (LPRC) apparatus to remove a projectile jammed in a cannon's gun tube. The LPRC is positioned coaxially and offset from the projectile, and the gun tube is filled with water. The charge is detonated producing a shock wave that disintegrates the LPRC apparatus and pressurizes the water. The pressurized water produces a radial hydraulic force against an interior wall of the gun tube, an axial hydraulic force against the projectile pushing the projectile toward the chamber, and produces an opposing expansion of explosive gases that blasts out most of the water in the gun tube. The process is less likely to damage the gun tube. The LPRC may be made using a 3D printer.

Abstract: A downhole explosive detonation assembly with a high voltage electro-explosive initiator having an input high voltage power supply with a low impedance shunting fuse, a flexible electrical link and a capacitor discharge unit. The explosive detonation assembly is adapted to detonate detonating cord from the side.

Abstract: Propulsion systems, puncturing devices, and firearm barrel cleaners that use these components to propel cleaning and/or lubricating projectiles down the barrel of a firearm are disclosed, along with related methods of manufacture and use.

Abstract: A combination receiver tube and adjustable stock for a firearm having a receiver. The receiver tube extends rearwardly from the receiver and includes a series of recessed locations formed along a length extending surface thereof, each of the recesses further including an ascending surface extending at an acute angle from the recessed location to an outer surface of the tube. The stock has a forward opening communicating with an open interior so that the stock is slidably mounted over the receiver tube to support axial movement of the stock relative to the tube. The stock includes a lug which is biased for seating within a first selected one of the recessed locations and, upon counter-biasing the lug to unseat from the recessed location, permitting the stock to be rearwardly extended from the receiver tube across consecutive recessed locations.

Abstract: A flexible adjustable trigger plug is a device that is utilized to prevent the accidental pressing and subsequent discharge of a firearm trigger. The device features a plug that may be fitted behind the trigger as well as a first lip and a second lip that are able to hold the plug in place behind the trigger. A first concave cavity and a second concave cavity are present as well in order to facilitate insertion and removal of the device by pressing. The device serves as a physical obstruction that prevents the trigger from being accidentally pressed. The device is flexible and may be adjusted by turning the device when in place behind the firearm trigger, allowing the device to be utilized with a wide variety of firearms. The device may feature a lanyard arch and opening that allow a lanyard clasp or clip to be secured to the device.

Abstract: The semiautomatic firearm comprises: a movable assembly (4) adapted to move against a return spring (10) by recovered energy resulting from pressure exerted when firing an ammunition (7), wherein the firearm comprises a stopper, a latch and a striker cooperating with a hammer (5) controlled by a trigger (6), at least one of a pivoting fork and a hammer used for locking the movable assembly in a compressed position of the return spring at a rear position of movement of the movable assembly, after each shot, an unlocking assembly (12) that is manually actionable and able to act on at least one of the pivoting fork and the hammer for releasing the movable assembly (4) and allowing the assisted return of the movable assembly (4) in order for reloading.

Abstract: The system and method for accurately determining range-to-go for the time-delayed command detonation of a projectile. Using dual laser and/or radio frequency detectors on a spinning projectile to determine the range-to-go, time-to-go, or lateral offset from the projectile to the target. The detectors are forward facing and rear facing and are located in a tail kit such that cost can be greatly reduced on a spinning projectile. The deployable detector(s) may be a light pipe, mirrors, or the like and comprise APD or PIN diodes.

Abstract: An example embodiment of a sound suppressor includes a shroud tube slidably and rotationally coupled to a vent tube. The vent tube is formed with a plurality of vent tube apertures in fluid communication with a bore extending from a first end to a second end of the vent tube. The shroud tube is formed with a plurality of shroud apertures in fluid communication with an interior void formed in the shroud tube. A rear cap attached to the vent tube is configured for attachment to the muzzle of a firearm. An indexing mechanism is configured for selectively holding the vent tube and shroud tube in an open-vent configuration with the apertures on both tubes overlapping one another, or in a closed-vent configuration with the apertures not overlapping. Sound suppression is enabled in the closed-vent configuration and minimized in the open-vent configuration.