Abstract: The present disclosure provides systems and techniques that can be implemented in a gun. The gun may include or be coupled with a slide cover. The slide cover may include a first slide cover recess along a latitudinal axis of the slide cover, the first slide cover recess comprising a first cavity of a first portion of the slide cover and a first cavity of a second portion of the slide cover. The slide cover may include a second slide cover recess along the latitudinal axis of the slide cover, the second slide cover recess comprising a second cavity of the first portion of the slide cover and a second cavity of the second portion of the slide cover. The slide cover may include a first retainer coupling a sight component with the slide cover such that a longitudinal axis of the sight component is substantially parallel with a longitudinal axis of the slide cover.

Abstract: This invention is directed to a handgun device and uses thereof.

Abstract: The present disclosure is directed to firearms that can receive and fire bullets from ammunition with different cartridge case sizes. For example, the receiver may fire a bullet from either a short cartridge, a medium cartridge, or long cartridge after the short, medium, or long cartridge is received by a receiver of the firearm. This firearm may include a receiver portion and a bolt portion that lock together at different relative locations when cartridges of different lengths are received by the receiver portion. The receiver portion may include a first type of alignment retention features (e.g. protrusions) and the bolt portion may include a second type of alignment retention features (e.g. recessions). Once a firearm cartridge is located inside of the firearm, it may be fired based on the receiver and the bolt portions being locked together via physical engagement of the different types of alignment retention features.

Abstract: The present disclosure provides systems and techniques for an electromechanical sear that is implementable in a gun. The gun may include a fire control manager, and the fire control manager may identify a trigger break based on a trigger sensor, transmit, based on the trigger break, a first signal to a first actuator located in a displacement path of a sear, so as to cause the first actuator to be displaced in a first direction, and transmit, based on the trigger break, a second signal to a second actuator located in the displacement path of the sear, so as to cause the second actuator to be displaced in a second direction. The transmitting the first signal to the first actuator and the transmitting the second signal to the second actuator may cause displacement of the sear and firing of the gun.

Abstract: This disclosure describes a system, and apparatus for securely mounting a firearm, while maintaining to ability to load, unload, and draw the firearm from the mount with a single hand. This is accomplished using a mount that is customized to conform to a specific model of firearm, ensuring a snug fit of the firearm within the mount. Magnetic retention secures the firearm in place in the mount. Modern, magazine fed handguns can be loaded and unloaded simply by moving the slide. Cycling the slide causes it to extract a round from the chamber (if a round is present) when the slide traverses rearward relative to the receiver. A new round is loaded from the magazine when the slide traverses forward relative to the receiver (if a loaded magazine is inserted).

Abstract: The present folding stock adapter can be used with many types of military-type assault rifles that typically comprise a receiver extension, buffer and action spring. The present folding stock adapter can be used to add a folding capability to a standard stock allowing it to fold against a rifle's receiver when the weapon is not in use, thus reducing the overall length of the weapon. This reduction in length can facilitate its maneuverability, storage and transport in cramped quarters. The present device can also allow for the quick unfolding of the stock in order to allow the weapon to function and be fire normally.

Abstract: In the case of a trigger device for a buttstock loader including a trigger rod for triggering an impact device of the buttstock loader with a first end of the trigger rod, it is suggested that the trigger device further includes a trigger lever, wherein the trigger rod is at least indirectly connected to the trigger lever by means of a pivot joint, wherein the trigger lever includes a trigger tongue and an extension wherein the pivot joint is arranged substantially between the trigger tongue and the extension, wherein the extension comprises a first abutment surface for at least indirectly abutting against a second abutment surface of the buttstock loader, so that upon actuation of the trigger tongue with a first force the trigger rod moves with a second force, which second force is greater than the first force, in the direction of the first end of the trigger rod.

Abstract: A surgical fastener applier including a housing containing a compartment, an elongated member extending distally from the housing, first and second jaws and a firing mechanism positioned within the housing. The firing mechanism is movable between a first position and a second position to effect firing of fasteners into the tissue clamped between the first and second jaws. A cover on the housing is openable to access the compartment. A power pack is removably loadable into the compartment, the power pack having a motor and an engagement member removably engageable with the firing mechanism within the compartment when the power pack is loaded into the compartment to effect movement of the firing mechanism from the first position to the second firing position.

Abstract: A pistol slide racking tool has a main body with a threaded passageway through its upper section. Tapered lateral arm members extend from the upper section. Tapered attachment pads are located adjacent to each arm member. A shaft threadably engages the passageway through the main body. The shaft is connected to a handle at one end and, at the opposite end of the shaft, is in contact with a mid-linkage member located in the passageway. In order to rack the slide, the attachment pads are positioned adjacent to the sides of the slide. The shaft is rotated to move the mid-linkage member and attachment pads forward such that they are tight against the slide. Movement of the handle in the direction away from the pistol then racks the slide.

Abstract: A firearm front sight post that is comprised of a camera assembly which captures an image or video, or a series of images or videos of what is in front of the firearm at the instant that the firearm is first fired, and at the instant that each and every subsequent shot is fired. The camera assembly is actuated by a actuation mechanism in communication with the trigger assembly of the firearm, and is activated when the trigger wall is met in the act of pulling the trigger of a firearm. The system is also comprised of a wireless transmitter that automatically sends the image/video from the camera assembly to a mobile application on a smartphone or other smart device, wherein the images/videos are encrypted, time-stamped and dated.

Abstract: A holster for a handgun, having at least some of an at least partial cavity; a lever having a thumb button portion and an engagement portion, wherein the lever includes a locking projection extending from at least a portion of the engagement portion, wherein the lever is pivotally attached or coupled to at least a portion of the holster, approximately between the thumb button portion and the engagement portion; and a lockout element, wherein at least a portion of the lockout element is positionable to block movement of the lever to keep the lever from being pivoted to a disengaged position.

Abstract: The present disclosure provides systems and techniques for an electromechanical trigger that is implementable in a gun. The gun may include a trigger mechanism, a trigger sensing mechanism, and a fire control manager. The fire control manager may identify a trigger break based on the trigger sensing mechanism generating a voltage, and the fire control manager may transmit a signal to an actuator mechanism based on the trigger break. A detent mechanism may be dislocated in response to a force applied to a trigger mechanism, and the trigger sensing mechanism may generate the voltage based on the dislocating of the detent mechanism. Dislocating the detent mechanism may correspond to satisfying a trigger break threshold. The actuator mechanism may be displaced in response to the signal, and displacing the actuator mechanism may result in a projectile being propelled from the gun.

Abstract: A surgical fastener applier including a housing containing a compartment, an elongated member extending distally from the housing, first and second jaws and a firing mechanism positioned within the housing. The firing mechanism is movable between a first position and a second position to effect firing of fasteners into the tissue clamped between the first and second jaws. A cover on the housing is openable to access the compartment. A power pack is removably loadable into the compartment, the power pack having a motor and an engagement member removably engageable with the firing mechanism within the compartment when the power pack is loaded into the compartment to effect movement of the firing mechanism from the first position to the second firing position.

Abstract: A release trigger pull cover preferably includes a slip-on trigger tube and a compressible section. An inner perimeter of the slip-on trigger tube is sized to receive a trigger of a string release. The compressible section preferably includes a trigger portion and at least two flexible supports. One end of the at least two flexible projections extend from a backside of the trigger portion. An opposing end of the at least two flexible projections are engaged with a front of the slip-on trigger tube. A firearm trigger pull cover preferably includes a slip-on trigger tube and front pad. An inner perimeter of the slip-on trigger tube is sized to receive a trigger of a firearm. A front area of the front pad includes a widthwise flat surface and a plurality of vertical ridges. An alternative embodiment of the firearm trigger pull cover includes a trigger tube and cantilever pull.

Abstract: A device implementable on a firearm includes a magazine extension housing, a pocket clip and a securing device. The magazine extension housing is attachable to a bottom opening of a magazine well of a magazine that is implementable on the firearm. The securing device is configured to secure the pocket clip to the magazine extension housing.

Abstract: An assembly for a modular, compact firearm includes a universal action and an interchangeable, non-reciprocating barrel. The barrel may directly mount various optical sighting systems and provide integral muzzle compensation and sound suppression capabilities. The firearm utilizes a universal action comprised of a slide assembly, breechblock assembly, recoil assembly, and receiver which mounts a variety of barrel assemblies and assembles into a variety of different grip frames. The action of the firearm utilizes a partially-locked breechblock which amplifies the inertia of a slide.

Abstract: A toy projectile launcher having a front portion, a rear portion, a hinge connecting the front portion and the rear portion, a handle connected to the front portion and adapted to rotate the front portion against the rear portion around the hinge among a left orientation, a right orientation, and a center orientation, and a rotatable two-way mirror, the handle being rotatable around a same axis of rotation as the hinge, and the rotatable two-way mirror being coupled to the front portion via a mechanical transmission adapted to translate a rotation of the front portion around the hinge to a rotation of the rotatable two-way mirror at a 2:1 ratio.

Abstract: A holster includes a hip plate and a shroud mounted to the hip plate. The shroud includes a channel adapted to receive a slide of a firearm, a slide block extending into an open portion of the channel and configured to abut a muzzle end of the slide received in the channel to prevent forward movement of the slide, and a locking lug extending into the open portion of the channel and configured to engage a chamber of the slide to prevent movement of the slide.

Abstract: A corner shot firearm comprises one or more clamp, a trigger actuator, a front grip, an accessory trigger, a pivot stud and an aim control wheel. The clamp includes a first mounting point disposed at a front end of the clamp, wherein the first mounting point is configured to mount a secondary firearm. Additionally, the trigger actuator is connected to the first mounting point. The front grip is attached to a rear end of the clamp. The accessory trigger is connected to the front grip such that the accessory trigger is actuatable by a finger of the human hand holding the front grip. Additionally, the pivot stud is connected to the first mounting point. Further, the aim control wheel is connected to the first mounting point.

Abstract: A toolless slide backplate for a firearm that comprises an extractor lock and a striker assembly lock. The extractor lock is dimensioned to cover and contact an extractor plunger when installed, and is held in place via an interplay with the extractor plunger. The striker assembly lock is dimensioned to cover the striker components when installed. The striker assembly lock covers the trigger connector of the frame of the firearm such that a disassembly opening is not required.

Abstract: A toy projectile launcher having a front portion, a rear portion, a hinge connecting the front portion and the rear portion, a handle connected to the front portion and adapted to rotate the front portion against the rear portion around the hinge among a left orientation, a right orientation, and a center orientation, and a rotatable two-way mirror, the handle being rotatable around a same axis of rotation as the hinge, and the rotatable two-way mirror being coupled to the front portion via a mechanical transmission adapted to translate a rotation of the front portion around the hinge to a rotation of the rotatable two-way mirror at a 2:1 ratio.

Abstract: A shroud may include a hood component, faceplate component, floorplate component and/or other fitments which may partially or completely cover or extend beyond certain constituents of a firearm. Each of the components and fitments may include various functional and/or aesthetic features that prevent a firearm's reciprocating mechanism from malfunctioning by being moved out-of-battery, not cycling completely or being fouled by debris. Additionally, the components, fitments, functions and features improve: the distribution of weight on a firearm, the ability to grip and operate a firearm, and the options for using a firearm, both in its traditional and new alternative ways, collectively to enhance a firearm operator's defensive and/or combative capabilities.

Abstract: A camera system for mounting to a scope can include a camera portion and a mounting system rotationally coupled to the camera portion. The mounting system can include a first securing portion having a first securing member, where the first securing member is configured to abut against a first portion of an eyepiece of the scope. The mounting system can also include a second securing portion having a second securing member, where the second securing member is configured to abut against a second portion of the eyepiece of the scope. The mounting system can further include an adjustment mechanism that simultaneously moves the first securing portion and the second securing portion in opposing directions relative to each other.

Abstract: A nonlethal projectile includes a debilitating material for immobilizing a target. The projectile is capable of self-separating or otherwise opening after launch by a launcher to release the debilitating material prior to impact with a target. The launcher is capable of initiating separation of the projectile. Opening may also be accomplished by a control circuit with a radio-frequency identification (RFID), where an RFID tag in the projectile causes the projectile to open at a user-specified distance from the launcher or by the force of launch on the projectile. A magazine may hold a plurality of projectiles and the various projectiles of the magazine may be configured to open at different distances and/or times after launch. The launcher may include a trigger and/or a safety switch to prevent the projectile from becoming armed until a certain parameter is met. The debilitating material may also be released through pores in the projectile.

Abstract: An exercise and training tool is provided for training handgun users to establish a strong grip with the thumb, palm, and other fingers of the hand which are not the trigger finger, and then to independently exercise the index finger in the more delicate and precise motions used for controlling the trigger for improved accuracy. The training tool may also disable a trigger pull function by the index finger unless a proper grip is maintained with the thumb, palm, and other fingers of the hand. Other tactile feedback included within the trigger pull sensation may be offered, to represent operations of a handgun such as trigger “break,” trigger reset, or recoil during a discharge.

Abstract: A cover for an ammunition magazine is provided. The cover can include a top wall and a plurality of side walls extending downward from the top wall. The side walls can define a lower perimeter edge and an interior cavity configured for receiving an open end of an ammunition magazine for a firearm. The cover can include a bracket mounting wing extending outward from one of the side walls and a bracket connected to the bracket mounting wing. The bracket can include a vertical portion and a horizontal portion. The cover can used with a set of coupled magazines used with a firearm by placing the cover over an open end of a spare magazine when a primary magazine is inserted into the firearm. The cover can be automatically detach from the spare magazine when the primary magazine is removed from the firearm due to the bracket contacting the firearm.

Abstract: A universal firearm adapter configured to mount to the frame of a firearm. The adapter easily, quickly, accurately, securely, concentrically and repeatably, with or without tools, attaches a suppressor or suppressor adapter to the frame or rail system of a firearm. The adapter includes a rail attachment configured to attach to a plurality of dimensionally inconsistent frames/rails and a bore alignment assembly. Moreover, the adapter is configured to axially align the adapter bore with the barrel bore regardless of the dimensional and axial inconsistencies of the barrel and its bore. The bore alignment assembly preferably includes a suppressor mount axially aligned with the adapter bore thereby ensuring that the suppressor is axially aligned with the bore of the barrel.

Abstract: The existing personal bulletproof equipment has the disadvantages such as a simple structure, insufficient folding and lack of an automatic opening function, and is thus not suitable for one-handed operations in a narrow and small space inside a vehicle. A foldable bulletproof shield disclosed in the present invention comprises a shield plate, a handle, an unfolding power device and an unfolding control device. The folding of the shield plate is realized by means of its own deformation. The unfolding power device is an elastic force device or an elastic structure provided in the foldable shield plate. The unfolding control device is composed of a button, a buckle, a strap, etc. and is integrated with the handle, such that a user enables the bulletproof shield to rapidly switch from a folded state to an unfolded state with one-handed operations.

Abstract: A grip support harness is described. The grip support harness may include a wrist cuff, a primary support strap connected to the wrist cuff, a primary connecting component connected to the wrist cuff; a secondary support strap connected to the wrist cuff and a secondary connecting component connected to the wrist cuff.

Abstract: Systems and methods for containing discharge from a holstered firearm are described. The system may include a bullet containment device (BCD) with a rectangular backing plate coupled to a firearm holster, a U-shaped housing having a base, two sides, and a top opening, a front plate coupled to housing such that the housing is interposed between the front plate and the backing plate, an upper shelf coupled to and normal to the housing sides, whereby the upper shelf, front plate, housing, and backing plate form an interior cavity generally in line with a bore axis of the firearm when the apparatus is coupled to the holster and the firearm is fully seated in the holster, whereby a bullet fired from the firearm while seated in the holster is confined to the interior cavity, and a lower shelf coupled to and generally normal to the housing sides.

Abstract: A pistol brace for a pistol having a frame with a rear end portion and defining a median plane longitudinally through the pistol. The pistol brace has a longitudinal support configured to attach to and extend rearwardly from the pistol frame. A first plate and a second plate are pivotably attached at an upper end portion to the longitudinal support and extend down from the support in opposed alignment. The first plate and second plate can pivot independently of each other. Optionally, a flexible strap is connected to the first plate and second plate. The strap defines an adjustable passageway for the user's forearm.

Abstract: A mounting assembly for securing an auxiliary device to a firearm is provided. The mounting assembly allows a variety of different sizes of auxiliary devices to be adjustably mounted to a firearm. The mounting assembly may be secured to mounting rails located on opposing sides of the bottom of a barrel of a firearm.

Abstract: Systems, devices, apparatus and methods for providing a semi-automatic rifle with ammunition magazine, having a docking port/station for allowing a semi-automatic pistol to be inserted. The trigger on the pistol can be used to fire the rifle and use the rifle ammunition. When the rifle ammunition is depleted, the pistol can be removed and separately fired using its' own ammunition.

Abstract: A silencer assembly for a firearm in one embodiment includes a support tube and plurality of baffles defining combustion gas expansion chambers. A coupling member including a ratchet mechanism removably mounts the silencer on a muzzle device on a firearm barrel. The ratchet mechanism comprises first and second arrays of teeth each disposed on the coupling member. The first array is infinitely rotatable on the coupling member when not coupled to the muzzle device and locks in rotational position when the coupling member is coupled to the device. The second array is rotationally fixed in position on the coupling member. In one embodiment, the muzzle device and coupling member have interlocking rotational stops which prevent the first array of teeth from rotating when the coupling member is coupled to the muzzle device.

Abstract: A magnetically variable firing system for a firearm includes a trigger mechanism allowing a user to selectively adjust the trigger pull force-displacement profile by changing the static magnetic field in the mechanism. In a closed magnetic loop configuration, the trigger mechanism includes a stationary yoke and pivotably movable trigger member. The trigger member includes a trigger portion and working portion operably interfaced with the firing mechanism of the firearm for discharging the firearm. An openable first air gap formed between the trigger member and yoke is maintained in a closed position via magnetic attraction therebetween absent a trigger pull. A control insert movable relative to a second control air gap in the yoke allows adjustment of the static magnetic field to alter the trigger pull force required to actuate the trigger mechanism. Other embodiments provide open magnetic loop trigger mechanism designs adjustable to magnetically vary the trigger pull force.

Abstract: A flexible pocket holster is used to secure and conceal a firearm within a pocket pouch, or similar receptacle. The flexible pocket holster comprises a holster fin, a support base, and a barrel-supporting rod. The holster fin is a flexible panel which is used to cover the trigger of a firearm and conceal the shape of the firearm. The holster fin may be sized or shaped to accept various types of firearms. The support base is mounted onto the holster fin, adjacent to a base edge and a barrel edge of the holster fin. The barrel-supporting rod is mounted normal to the support base and opposite to the base edge. When using the flexible pocket holster, the barrel of the firearm is mounted about the barrel-supporting rod. This helps to secure the firearm and allows the firearm to be easily removed from the flexible pocket holster.

Abstract: A firearm flotation system with a rearward buoyant body and a forward buoyant body is disclosed. The forward buoyant body may have a keyed rail slot constructed to allow the firearm rail system to be inserted therein. Alternatively, or in addition to, the forward buoyant body may include a first buoyant body portion and a second buoyant body portion. The first buoyant body portion has an interlocking tongue and the second buoyant body has an interlocking groove, wherein the tongue fits into the groove and connects the first buoyant body portion to the second buoyant body portion. The system is sufficiently buoyant to render the firearm buoyant in water when the firearm is attached to the system.

Abstract: A firearm slide assist device is disclosed with a handle having a grasping end and a cam end with an upper tine and a lower tine. The firearm slide assist device further includes a securing arm for connection to the cam end, and a fastening device for fastening the securing arm within the upper tine and the lower tine of the cam end.

Abstract: A mounting system includes a rail system. The rail system can include a plurality of powered rails and at least one control rail. The rail system can be disposed on a firearm, extending along the barrel toward a front of the firearm. The front or forward direction of the firearm extends from the trigger toward the distal end of the barrel. The rail system can extend along the barrel forward of the trigger, stock, and firearm handle.

Abstract: Extendable tangs are used to increase the surface area of grips so as to better enable users with larger hands to adequately control smaller items. Tangs are stowed within the body of a grip and deployed through one of a number of mechanisms, including spring-loaded and non-spring loaded mechanisms.

Abstract: A slide assist system for a firearm having a frame and a reciprocating slide is disclosed. The slide assist system contains an elongated body having a first end pivotally connected to the reciprocating slide, and an opposed free end, the elongated body being movable between a stowed position in which the elongated body extends along the reciprocating slide and a deployed position in which the free end extends away from the reciprocating slide.

Abstract: A universal marksmanship training system is disclosed herein configured to utilize a display device comprising a graphic display. A software application may also be provided. The software application is often configured to display a virtual target on the graphic display. A chamber insert may be utilized, the chamber insert configured to be positioned with the firing chamber of a firearm to be zeroed, wherein the chamber insert interacts with the software application to determine alignment of a bore of the firearm to a bore alignment point on the graphic display. In one form, the display device displays a sight target on the graphic display wherein the sight target is visually perceived by a marksman, and is offset from the bore alignment point by a offset distance. In one form, the software application calculates the sight target relative to the bore alignment point of the firearm given a set of condition variables.

Abstract: The present folding stock adapter can be used with many types of military-type assault rifles that typically comprise a receiver extension, buffer and action spring. The present folding stock adapter can be used to add a folding capability to a standard stock allowing it to fold against a rifle's receiver when the weapon is not in use, thus reducing the overall length of the weapon. This reduction in length can facilitate its maneuverability, storage and transport in cramped quarters. The present device can also allow for the quick unfolding of the stock in order to allow the weapon to function and be fire normally.

Abstract: A ballistic shield apparatus for a weapon includes: a flexible ballistic shield made of penetration-resistant material, the ballistic shield having opposed front and rear faces, spaced-apart side edges connecting spaced-apart top and bottom edges, and a central area bounded by the side edges; one or more flexible securing members extending laterally outward from each of the side edges, each of the one or more flexible securing members including a releasable connector disposed on a distal portion thereof; and at least one releasable connector disposed on the ballistic shield, the releasable connectors collectively configured such that the distal portion of each of the one or more flexible securing members can be releasably secured to the central area of the ballistic shield, or to a distal portion of one of the one or more flexible securing members.

Abstract: A tactical device has a barrel having a first end, a second end, and a through hole that extends between the first end and a second end. A barrel housing has a first end, a second end and a through hole that extends between the first end and the second end. The barrel second end is configured to be inserted into the barrel housing first end and is axially moveable with respect to the barrel housing. A firing pin is mounted in the barrel housing through hole proximate the barrel housing second end and has a protrusion that extends toward the barrel housing first end. The tactical device has a safety means for maintaining the barrel in a first position in which the firing pin is spaced apart from the barrel second end.

Abstract: A rifle assembly for a two-stage trigger includes a rifle arranged with an upper receiver and a lower receiver. A pistol grip is joined to the lower receiver and further has a pistol grip lower edge. A trigger housing further has a trigger housing lower receiver portion immediately adjacent to the lower receiver. The trigger housing lower receiver portion is immediately adjacent to a trigger housing magazine well portion and a trigger housing pistol grip portion. A bow trigger extends through a trigger housing lower receiver portion and into the lower receiver. The bow trigger has a cylindrical housing that is partially filled with a filler. A trigger stub is centrally located in the cylindrical housing. Moving a pressure point up or down on the cylindrical housing effectively changes the rifle from a single stage style fast shooting trigger to a slower shooting long range two stage trigger with a lower trigger pull weight.

Abstract: A barrel for a firearm including a chamber configured to receive a round of ammunition, and a shoulder at least partially extending from an exterior surface of the barrel. The barrel also has a gas vent feature formed in the exterior surface of the barrel to vent gases from the chamber. The gas vent feature may include at least one channel formed in the exterior surface of the barrel, and the at least one channel may have a predetermined depth and at least partially extend into the shoulder of the barrel.

Abstract: Devices, systems, and methods of manufacturing are disclosed with regard to a rapid-fire accessory for a semi-automatic firearm. The rapid-fire accessory may include a trigger guard mount and a trigger actuator. The trigger guard mount may attach the rapid-fire accessory to the semi-automatic firearm. The trigger guard mount may include a mounting channel for receiving a trigger guard of the semi-automatic firearm. When mounted in the mounting channel, the trigger guard guides a sliding movement of the trigger guard mount forward and rearward relative to the trigger guard. The trigger actuator may engage a trigger of the semi-automatic firearm. The trigger actuator may be fixed relative to the mounting channel and configured to pull the trigger when the trigger guard slides forward in the mounting channel.

Abstract: A firearm flotation device for providing buoyancy to a firearm is disclosed. The device includes a buoyant body with a first buoyant body portion and a second buoyant body portion, wherein the first buoyant body portion includes an interlocking tongue and the second buoyant body includes an interlocking groove. The tongue fits into the groove and connects the first buoyant body portion to the second buoyant body portion. The buoyant body is sufficiently buoyant to render the firearm buoyant in water when the firearm is attached to buoyant body. The tongue-in-groove system may be tapered.

Abstract: A device for modification of ejected casings trajectories includes a top side and a bottom side. The bottom side is configured for attachment to a location on a firearm. The location is in an expected trajectory of spent casings ejected from the firearm. The top side includes a surface facing the expected trajectory of the spent casings. The surface is configured to modify a trajectory of the spent casings by accepting an impact at an angle with each spent casing at a point of impact on the surface and deflecting the spent casings at a deflection angle. The deflection angle is dependent on the point of impact. The surface may include an angled surface or a curved surface. One side of the curved or angled surface may be raised compared to another side of the curved or angled surface.