Abstract: A sear mechanism for a firearm includes a trigger element having one or more contact surfaces on which one or more movable or pivotable components of the sear mechanism selectively contacts or slides. In some embodiments, the trigger element is made by producing an intermediate workpiece of the trigger element by a manufacturing process, and electric discharge machining the intermediate workpiece of the trigger element to provide the contact surfaces.

Abstract: Semi-automatic rimfire rifles have a frame, a bolt operable to reciprocate within the frame, the bolt defining a bolt axis, the bolt defining a firing pin passage, a first firing pin portion received within at least a first portion of the firing pin passage, a second firing pin portion separate from the first firing pin portion received within at least a second portion of the firing pin passage, and the first firing pin portion being operable to contact the second firing pin portion such that the second firing pin portion discharges a cartridge in response to the first firing pin portion being struck by a hammer. The first firing pin portion may define a first firing pin axis aligned with the bolt axis. The second firing pin portion may have a nose portion that is offset from the bolt axis extending away from the first firing pin portion.

Abstract: A concussion device for creating a low level of smoke and a selectively tuned low-toned sound, the device including a structure having a cavity, the cavity having a top opening; a first energetic charge disposed in a bottom portion of the cavity; and a member removably secured to the structure within the cavity and partially overlying the first energetic charge.

Abstract: Improvements in a reusable polyurethane projectile are presented. The reusable polyurethane projectile performs like a bullet or projectile because the projectile is essentially the same size and shape of a bullet and can be fed through a normal bullet clip into the breach of a gun, fired and ejected. The reusable polyurethane projectile conforms to the rifling of the barrel of the firearm to spin the projectile and provide equivalent accuracy to a metallic bullet. Upon impact the projectile will flatten and then rebound to the original shape. Standard re-loading mechanisms can be used to install the projectile back into a prepared cartridge. The reusable projectile is fabricated from a casting process that increases the resistance of the polyurethane from melting when the hot gun gunpowder pushes the reusable projectile out of the barrel of the gun.

Abstract: A swivel handle assembly is disclosed. The swivel handle assembly comprises a ball attachment, a handle, and a friction pin. The handle is a hollow elongate cylinder with openings at each end of the handle. The ball attachment fits within the first end of the handle and extends through the first opening. The handle is rotatable around the ball attachment. The friction pin is inserted through the second end of the handle. The friction pin extends through the body of the handle and engages the ball attachment. When the friction pin is fully engaged against the ball attachment the handle is locked into position. The user can position the handle on the ball attachment in a desired position and lock the handle in place during use.

Abstract: A suppressor and flash hider device for firearms defines primary and secondary propellant gas paths that function simultaneously to quickly decrease gas pressure within the tubular housing of the suppressor to minimize blow-back toward the firearm user. The tubular housing has a collet-like firearm clamping system that establishes symmetrical clamping that will not tend to force the suppressor off coaxial alignment with the firearm barrel to which is mounted. A front wall mounted to the housing defines a central projectile port through which propellant gas also passes and defines an array of angularly oriented discharge passages for discharging propellant gases from the secondary propellant gas path forwardly and angularly toward gas being discharged from the projectile port of the front wall.

Abstract: A multi-axis firearm foregrip which is highly adjustable and which enables a firearm to be held or supported in a position which is ergonomic for the user or appropriate for use of the firearm. The foregrip may be rapidly adjusted to a selected one of many different positions as deemed appropriate by the user to enable optimal use of the firearm. The foregrip comprises a mount, a handle and a joint. The mount may be engageable to the firearm, for example to a rail system of the firearm. The handle is adjacent to the mount. The joint engages the handle to the mount and allows for handle movement relative to the mount. In embodiments, the foregrip utilizes a ball-and-socket joint which enables swiveling movement of the handle relative to the mount providing a wide range of handle adjustment before the handle is held at the selected position by the foregrip.

Abstract: Speed loaders for loading cartridges revolver cylinders are provided. A speed loader includes a main body which is configured to accommodate a plurality of cartridges therein. The speed loader further includes a plunger movable along a longitudinal axis between a first position and a second position. Movement of the plunger from the first position to the second position causes ejection of the plurality of cartridges from the main body.

Abstract: An end cap for a semiautomatic pistol is mounted at the breech end of a slide to maintain the striker assembly in place when subject to inertial loads. The end cap includes a body with a base and a cover. A metal plate is mounted between the base and cover to prevent striker blow-out in the event that a primer is pierced. Flexible, resilient projections extend from the base and engage the slide within a recess, the projections extending transversely to the firing axis to counter inertial forces that might otherwise dislodge the end cap and cause a stoppage.

Abstract: A shotgun shell magazine to be received within a mil-spec magazine of an M16/AR-15 mil-spec firearm is disclosed. The magazine has an open top end defining a cavity configured to receive one or more shotgun shells. The magazine body includes a feed lip which partially occludes the open top end and a rim edge including a vertical edge strip which defines a gap in communication with the cavity. A follower having a ramped upper surface resides within the cavity. The follower is biased to direct the shotgun shells toward the open top end until the primer end of a top most shotgun shell engages the feed lip. The top most shotgun shell is angled with respect to the open top end and at least a portion of the closed end of the top most shotgun shell lies above a plane created by the open top end.

Abstract: A bolt for a firearm includes, among other things, a bolt body extending between a first bolt end and a second bolt end, the bolt body defining a shaped cavity adjacent to a breech lock recess. The shaped cavity is defined by a cavity floor extending between a forward cavity face and a rear cavity face, the forward cavity face defines a forward angle relative to the cavity floor, the rear cavity face defines a rear angle relative to the cavity floor, and each of the forward angle and the rear angle is acute. A bolt assembly for a firearm and a method of fabricating a bolt for a firearm are also disclosed.

Abstract: A stock for a firearm includes an attachment member shaped to attach the stock to a firearm, a stock member pivotally attached to the attachment member so that the stock member is pivotable between an aligned position and a folded position, and a stock body. One of the stock member and stock body includes a plurality of stock attachment locations so that the stock member and stock body are connected together at one of the plurality of stock attachment locations.

Abstract: Designs and methods are provided for a hard armor structure comprising a symmetrical array of regularly shaped armor tiles, and a lattice structure comprising rigid cell walls surrounding each tile.

Abstract: A firearm includes a firing mechanism and a sensor device. The sensor device includes a subscriber identity module configured to communicate with a server over a signaling channel of a wireless communications network. The Sensor device is configured to enable/disable the firing mechanism in accordance with instructions received by the SIM from the server. Movements and/or attempted operations of the firearm may be monitored using an application running on a mobile device, which application receives information concerning the firearm over the signaling channel of the wireless communications network.

Abstract: There is a firing and arming system, such as an activation system, of a munition for quickly and accurately activating a warhead or a propulsion system of the activation system. An initiator interface of the activation system activates the warhead or propulsion system. At least one power source is included in the activation system to provide the initial power for activation of the initiator interface and subsequent activating of the respective warhead or propulsion system. Logic elements are communicatively disposed between the at least one power source and a flux compression generator circuit to control activation of the generator. The flux compression generator circuit is at least partially detonated to transform current received from the at least one power source into sufficient current for activating the initiator interface.

Abstract: 1. Safety device for a portable long-barrelled firearm or pneumatic weapon (10), said weapon (A) being gripped by a user with both hands and comprising: a firing mechanism, including at least one trigger (11) operated by the user's hand, a grip (12) held by the user's other hand, and a selective locking mechanism (100) of said firing mechanism, operatively switchable from a deactivated position, in which it allows firing of the weapon, to an activated position, in which it prevents firing of the weapon.

Abstract: A firearm includes a firing mechanism and a sensor. The sensor is configured for wireless communication over s short range RF network with a hub worn or carried by a user of the firearm. The hub includes a subscriber identity module configured to communicate with a server over a signaling channel of a wireless telecommunications network. The sensor device is configured to control a enable/disable mechanism in the firearm in accordance with instructions received from the hub.

Abstract: A trigger mechanism for a firearm is presented. The trigger mechanism has a trigger housing, a sear, a sear block and a trigger lever. Actuation of the trigger causes the trigger lever to rotate and eventually come into contact and move the sear block, which permits the sear to fall and permit the actuation of the firing mechanism.

Abstract: A friction preventing apparatus and a method of manufacturing the same are provided. The apparatus includes: a first object; a second object spaced apart from the first object and facing the first object; and a plurality of charged nanoparticles provided on a surface of one of the first and second objects, such that the nanoparticles are disposed between the first object and the second object. A potential difference is formed between the first and second objects. The nanoparticles may be positively charged and may adhere to the first object, and the first object has a potential lower than a potential of the second object. The nanoparticles may be negatively charged and may adhere to the second object, and the second object has a potential higher than a potential of the first object.

Abstract: Devices, systems and methods of using an ergonomic fore grip/gun handle with a concealable and collapsible bipod. One version can have a tubular recess consisting of a first cylindrical cutout housing the bipod legs when concealed and a sliding piston that deploys the legs and a second cylindrical cutout housing a release mechanism and a void space for other accessories. The release mechanism has a compression spring positioned between the piston assembly and the bottom of the first cylindrical cutout and the compression spring. The legs are connected to the bottom of the piston assembly via a hinge and spring that when released from confinement within the fore grip, causes the legs to expand outward until fully deployed. Telescoping legs allow adjustment of leg length for use on uneven terrain. The grip portion has an outer surface with a flat surface on sides of the grip to provide a more stable grip, assist in orienting the mounted weapon and support pressure pads for lights.