Abstract: A modular system for a firearm receiver which has a threaded annulus at a rear end thereof. The modular system includes a base that includes a front face, a rear face, and a thread helically extending along an exterior thereof between the front face and rear face and configured to engage with the threaded annulus of the receiver. The base includes a screw opening extending through the front and rear faces. The system also includes a screw and a first end cap. The first end cap has a body. The body has a front face and a threaded opening extending into the body and terminating therein. The screw has a threaded shank configured to extend through the screw opening of the base and into the threaded opening of the first end cap for connecting the base and first end cap.

Abstract: A handguard assembly for attaching to a firearm is disclosed. The handguard assembly comprises an upper component, a lower component, a front cap, and a rear cap. The front cap and rear cap are secured within the lower component. The front cap and rear cap have curved top sides for supporting the barrel of the firearm. The lower component has slots in the sides to receive tabs from the sides of the upper component. When the upper component and lower component are attached to the firearm, the components work together to position the barrel in the preferred position so that the sights of the firearm are zeroed when the handguard assembly is attached to the firearm.

Abstract: Disclosed is a weapon tube and particularly a torpedo tube structure including a system for holding the weapon in a storage position in the tube, including a clamping mechanism which is connected to the structure and can be moved by an actuator between a closed position for locking an interface part of the weapon in order to lock the weapon in position in the structure and an open position for releasing the interface part and therefore the weapon, the structure includes an elastic unit for soliciting the clamping mechanism in the closed position.

Abstract: A cartridge comprising a bullet, the bullet providing a radially expanding array of bullet fragments upon entering a target and also providing an increase in effective surface area of the bullet within the target by structural features that facilitate tumbling or mushrooming in the target. In an embodiment a pair of axial core members are aligned in a bullet jacket with the forward core member being segmented with separation junctures formed by engaged faces of adjacent segments. Impact causing fracturing of the segments from a base portion.

Abstract: A tablet, a gas generator and a gas generating device are provided, wherein the tablet comprise a tablet body, the tablet body comprises opposite first and second sides, the tablet body is provided with a vent hole running from the first side to the second side, the first side is provided with a first positioning structure, and the second side is provided with a second positioning structure that cooperates with the first positioning structure. By the smart design of the tablet structure, the present disclosure can effectively simplify the structure of the gas generator and reduce the manufacturing cost.

Abstract: The present invention provides polymeric ammunition cartridge having a generally cylindrical neck having a projectile aperture at a first end, a shoulder comprising a shoulder top connected to the generally cylindrical neck opposite a shoulder bottom, a nose junction positioned around the shoulder bottom, a skirt connected circumferentially about the nose junction to extend away from the shoulder bottom, wherein the nose junction and the skirt are adapted to mate to a base junction in a cartridge.

Abstract: A power charge and method for actuating a wellbore tool with a power charge. The power charge may include a first volume containing a first energetic material and a second volume containing a second energetic material positioned within the first energetic material. The second energetic material may be a faster burning material compared to the first energetic material. The wellbore tool may include a power charge cavity, an initiator positioned in an initiator holder adjacent to the power charge within the power charge cavity, and a gas diverter channel for directing to an expansion chamber gas pressure generated by combustion of the power charge, to actuate the wellbore tool. The method may include inserting the initiator into the intiator holder within the power charge cavity and initiating combustion of the first energetic material and the second energetic material.

Abstract: A lightweight machine gun receiver has a frame having opposed left and right shell portions configured to separably connect to each other in a connected condition, when in the connected condition, the frame defining an internal space configured to receive a reciprocating bolt, have a barrel connection facility, and have a trigger connection facility, when in the connected condition, the frame being an elongated body having a left side panel having upper and lower edges and an opposed right side panel having upper and lower edges, each of the left and right shell portions having top and bottom spans extending laterally from the associated side panel toward corresponding opposed top and bottom spans, the top and bottom spans having respective free ends having respective top and bottom span mating facilities configured to mate with each other, and the top and bottom span mating facilities each having a sliding interface.

Abstract: A trigger mechanism or fire control for trigger operable devices includes a housing; a sear having a sear body coupled to the housing and including a primary engagement surface and an active sear support reset geometry; and a sear support coupled to the housing and having a body with a sear engagement surface and a passive sear support reset geometry. The primary engagement surface of the sear is moved into an overlapping condition with the sear engagement surface of the sear support as the sear is moved from a discharged position to a reset position after actuation of the trigger operable device. In addition, interaction between the active sear support reset geometry and the passive sear support reset geometry causes a mechanical displacement of the sear support to a reset position.

Abstract: A firing mechanism for a firearm includes a trigger, a forcing structure, and a spring within a cylinder, wherein while the trigger is pulled, the forcing structure moves to force the cylinder to contact a barrel and to force the spring to compress, and while the trigger is returned to an idle position, the forcing structure moves to allow the spring to decompress and to force the cylinder away from the barrel.

Abstract: A handguard comprising a tube centered on a central axis and a rail protruding outwardly from the tube and extending along the tube parallel to the central axis. An endcap is secured to a face of the tube and includes a ring portion extending around a face of the tube and a rail cap extending outwardly from the ring portion and covering a face of the rail. Splines protruding inwardly within the tube and the endcap includes tabs positioned between pairs of adjacent splines of the plurality of splines. Fasteners pass through the tube and engage the tabs. The ring portion may increase with thickness from the rail cap. The front of the rail cap may include two regions with different slopes.

Abstract: Systems and processes are provided for prefabricating pistol frames to re-purpose original pistol components, produce pistols or carbine-like pistols, and to customize firearms for various tactical purposes.

Abstract: The present disclosure relates to the technical field of gun sight accessories, and in particular to a fast overturning bracket for a gun sight. The fast overturning bracket includes a bracket body, wherein the bracket body is composed of a main body and a pressing plate, and the pressing plate is fixed at a right side edge of the main body through a pressing plate bolt. The fast overturning bracket further includes an overturning rack. A connecting block perpendicular to the overturning rack is arranged at a bottom of a left side of the overturning rack; a groove is formed in a left side edge of the main body; the connecting block is embedded into the groove; and the connecting block is connected with the main body through a locating mechanism.

Abstract: This invention provides a quick detaching mechanism for handle light, including a handle light, a base and a locking rod; the base is rotatably connected to the locking rod; the locking rod detachably mounts the handle light on a bottom of the base; the base has a top which is mounted on a firearm rail. Through the cooperation of the base and the locking rod, the handle light with the handle and the tactical light combined can be quickly mounted on and detached from the firearm rail. The mounting and detachment processes can be completed by only controlling the locking rod. It is convenient to use and no other tools is required. Its operation is simple and convenient.

Abstract: A sear mechanism for a firearm pivotably mounts a sear body on a sear lever which is pivotably mounted on the firearm frame. An actuator lever is also pivotably mounted on the frame. The actuator lever is pivoted by a trigger bar connected to the firearm's trigger. Pivoting of the actuator lever when the trigger is pulled allows the sear lever to pivot. Pivoting of the sear lever allows the sear body to fall off of a surface on a striker, releasing the striker to discharge the firearm.

Abstract: Provided herein are projectiles for use in a propellant driven disrupter device, and associated methods, to neutralize an explosive target. The projectile may comprise a friction reducing container at least partially filled with one or more fluids, fluid mixtures, particles, and other components to provide one or more desired fluid properties to achieve a desired one or more jet parameters upon target impact. The fluid(s) in the container are referred to as highly efficient energy transfer (HEET) fluids do to the improved fluid jet action on target compared to conventional water projectiles. The projectiles and disruptor can be more precisely individually tailored to the target, thereby increasing the likelihood of successful disablement and decreasing the likelihood of inadvertent and uncontrolled explosion.

Abstract: A barreled firearm having a mass-locked breechblock and a recoil-damping element which is connected on one side to a frame assembly and on another side to a barrel assembly including a barrel. A housing part of the barrel assembly is mounted in the frame assembly in an axially slidable manner. A support element stationary relative to the barrel is mounted in a breechblock housing or in the frame assembly in an axially slidable manner. Alternatively, a support element stationary relative to the frame assembly is mounted in a breechblock housing in an axially slidable manner. The breechblock housing is guided by the frame assembly in an axially slidable manner and the breechblock housing is supported by the support element by means of a spring element. This design absorbs or reduces recoil when a shot is fired from the barreled firearm.

Abstract: A handgun offhand finger rest apparatus for comfort and support when using the offhand for recoil management includes an attachment body having a body top side, a body bottom side, a body left side, a body right side, a body front side, and a body back side. The body top side is selectively engageable with an underside of a firearm in front of a trigger guard of the firearm. A thumb rest is coupled to the attachment body and perpendicularly extends from either the body left side or the body right side. A finger rest is coupled to the body bottom side of the attachment body adjacent the body back side to rest adjacent the trigger guard of the firearm.

Abstract: An air-soft gun includes a grip; a high-pressure air canister disposed in the grip; and a remaining compressed air release device including a channel member threadedly secured to an end of the air canister and including an axial channel and a sealing ring; a rotatable cap releasably secured to the channel member; a biasing member fastened between the cap and the channel member; a striker including a needle on a first end, an internal passageway, an inlet proximate the needle and communicating with the passageway, an outlet proximate a second end and communicating with the passageway, internal threads on the passageway proximate the second end, and a threaded fastener driven through the cap into the internal threads to secure the cap to the striker. The inlet is blocked by the sealing ring in an inoperative position.

Abstract: A laser beam is condensed in a close position to a target object in underwater so as to generate an air bubble or plasma. The target object is efficiently destroyed by a shock by the air bubble or the plasma.